Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería / International Journal of Numerical Methods for Calculation and Design in Engineering

Please note that new submissions after 12 July 2024 shall be submitted through the new submission system by clicking “Submit a Paper” on journal's homepage. Submissions before 12 July 2024 will be operated and maintained in Scipedia.

International Journal of Numerical Methods for Calculation and Design in Engineering (RIMNI) is a peer-reviewed Open Access journal, founded in 1985. RIMNI contributes to the spread of theoretical advances and practical applications of numerical methods in engineering and other applied sciences. RIMNI publishes articles written in Spanish and English. The journal's scope includes mathematical and numerical models of engineering problems, development and application of numerical methods, advances in software, computer design innovations, educational aspects of numerical methods, etc. RIMNI is an essential source of information for scientists and engineers in numerical methods theory and applications. RIMNI contributes to the interdisciplinary exchange and thus shortens the distance between theoretical developments and practical applications. This journal is published quarterly by Scipedia.

Indexing and Abstracting: SCIE: 2023 Impact Factor 0.3, JCR Q4; Scopus: 2023 CiteScore 0.7; DOAJ; PMC, etc.

Desde 1985 la Revista Internacional de Métodos Numéricos para Cálculo y Diseño en Ingeniería (RIMNI) contribuye a la difusión en castellano e inglés de los desarrollos teóricos y aplicaciones prácticas de los métodos numéricos, tanto en relación con su utilidad como instrumentos de cálculo y análisis para el ingeniero y el científico, como en aspectos que inciden en las nuevas tecnologías de diseño y proyecto de producción y procesos en ingeniería. La revista abarca áreas diversas, tales como: modelos matemáticos y numéricos de problemas de ingeniería, desarrollo y aplicaciones de los métodos numéricos, nuevos avances en temas de software, innovaciones en el campo del diseño por computador, aspectos didácticos de los métodos numéricos, etc. La revista constituye una fuente de información imprescindible para ingenieros y científicos sobre innumerables temas relacionados con los métodos numéricos y sus aplicaciones, contribuyendo a promover la transferencia de conocimiento interdisciplinar y, por consiguiente, a acortar la distancia que existe entre los desarrollos teóricos y las aplicaciones concretas.

International Journal of Numerical Methods for Calculation and Design in Engineering (RIMNI) is a peer-reviewed Open Access journal, founded in 1985. RIMNI contributes ... show more

DOCUMENTS1162
VIEWS96149
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SCORE PERCENTILE100

Volume 40, 2024

Issue 3, 40, 2024

Structural design of composite magnetorheological damper and experimental study on block forming machine

C. Li, S. Ji, B. Chen

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (3), 37

Abstract
To improve the quality of concrete block, a composite magnetorheological damper that is composed of rubber spring and magnetorheological damper for block forming machine is [...]

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Aeroelasticity analysis of folding wing with structural nonlinearity using modified DLM

Y. Ni, P. Li, H. Zhao, S. Qiao

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (3), 36

Abstract
The structural nonlinear aeroelastic analysis of folding wings is conducted by integrating the modified Doublet Lattice Method in this paper. Firstly, a modified Doublet Lattice [...]

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Issue 2, 40, 2024

A empirical research on AI-powered athletic posture detection in sports training

S. Wang, G. Zhang

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 35

Abstract

The current investigation delineates the efficacy of AI-facilitated detection of athletic postures within the realm of sports training. Employing a synthesis of literature review and empirical methodologies, data were amassed and scrutinized, affirming the study’s validity. The salient outcomes are manifold: (1) The frame difference algorithm efficaciously discerns inter-frame variances, evidencing pronounced adaptability and robustness, thereby enabling the recognition of weightlifting postures. (2) Confronting the challenge of negligible inter-frame disparities inherent in the frame difference algorithm, the research introduces a novel detection technique predicated on the cumulative inter-frame differences, which precisely pinpoints regions of posture alteration in weightlifting athletes. (3) Leveraging the dynamic space model of optical flow, the study ascertains the directional channel predicated on optical flow trajectory analyses, facilitating the identification of three distinct weightlifting postures: squatting, descending, and standing. (4) In alignment with the distinctive postural attributes of weightlifting athletes, a human posture paradigm was formulated, and a BP neural network classifier was deployed for both training and evaluative purposes, culminating in the successful differentiation of athlete from non-athlete entities within the training milieu. (5) The application of AI in posture recognition was extended to the scrutiny of pivotal postures and motions in weightlifting athletes, with experimental findings revealing a 98.21% accuracy rate in the recognition of force-exertion postures via the inter-frame difference method, and a flawless 100% accuracy in the identification of the apex and squatting postures. The enumeration of detected postures—encompassing knee extension, knee flexion, force application, squatting, and standing—through the poselet keyframe extraction approach, corresponded with the video count. Prospectively, AI’s role in athletic posture detection promises to augment coaches’ and athletes’ comprehension of their proficiencies and deficiencies, thereby steering training refinement and bolstering both the efficacy of training and the athletes’ caliber.

Abstract
The current investigation delineates the efficacy of AI-facilitated detection of athletic postures within the realm of sports training. Employing a synthesis of literature [...]

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Research on the synchronization control of fractional-order complex networks based on switching topology

W. Li, Y. Ma

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 34

Abstract

In the contemporary epoch, bolstered by information technology, the quintessence of networks is ubiquitously manifested, with a plethora of network types—ranging from the Internet, vehicular traffic frameworks, electrical distribution systems, cellular communication matrices, to social interconnection webs—being intricately woven into the fabric of societal functionality and quotidian existence. The domain of complex networks has burgeoned into a fervently pursued research vector, magnetizing an eclectic cohort of investigators from disciplines as variegated as mathematics, biosciences, and engineering. Notably, fractional calculus has eclipsed its integer-order counterpart by offering enhanced precision in the depiction of real-world systems and phenomena. Consequently, the infusion of fractional calculus into the modeling of complex networks, to dissect their dynamic attributes and attendant control paradigms, has crystallized as a research nexus of burgeoning interest, eliciting scholarly discourse at both national and international echelons. [Purpose] This inquiry into the synchronization control of fractional-order complex networks, predicated on switching topology, endeavors to harness said topology as a scaffold for probing the synchronicity inherent within fractional-order complex networks. The objective is to augment the operational efficacy of these networks, broaden their sphere of applicability, and fortify the synchronal linkage amongst fractional-order complex networks and their counterparts. [Method] Predominantly, this exploration is underpinned by a synthesis of bibliographic scrutiny and analytical modeling, employing an extensive compendium of model equations to elucidate the subject matter. The spotlight is cast upon the Caputo fractional-order differential equation, with a focus on assaying the stability traits of its equilibrium junctures and formulating more expansive and pragmatic conditions for stability. In addition, to facilitate the precise estimation of elusive topologies within complex networks, a supplementary network—comprising isolated nodes and a regulatory protocol—is conceptualized. [Results] The findings posit that the investigation into synchronization control, anchored in switching topology, propels the advancement of fractional-order complex networks and holds substantive referential merit. It serves to substantiate, to a certain degree, the postulations of antecedent theorists and chart a trajectory for ensuing scholarly endeavors in cognate domains, thereby perpetually amplifying the pragmatic utility of fractional-order complex networks.

Abstract
In the contemporary epoch, bolstered by information technology, the quintessence of networks is ubiquitously manifested, with a plethora of network types—ranging from [...]

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Numerical modeling of progressive damage and failure of tunnels deeply-buried in rock considering the strain-energy-density theory

Q. Sun, C. Yuan, S. Zhao

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 33

Abstract
Exploring the rock failure mechanism from an energy perspective is crucial for ensuring the safe construction of tunnels under complex geological conditions. In this study, [...]

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Time-resolved subcycle and intercycle interference influenced momentum shift in nonadiabatic tunnelling ionization

S. Cui, M. Xu

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 32

Abstract
Momentum shift is an important sign of nonadiabatic tunnelling ionization process, to investigate the mechanism of momentum shift, we use the strong-field approximation theory [...]

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Construction of microstructure and nutrient transport properties of tibial segmental implant prosthesis

X. Zhang, J. Hai, C. Shan, X. Ma

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 31

Abstract
'''Segmental tibial bone defects caused by bone tumors, open fractures, and non-union of large bone segments are one of the challenges in orthopedic diseases. [...]

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Landslide control in the excavation of a shallowly buried tunnel with a large front slope

H. Ma, W. Qin, B. Zhang, Z. Wang, W. Qin

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 30

Abstract
The tunnel with a large front slope is a common type of entrance in mountain tunnels. Excavation of this type of tunnel disrupts the original balance of the slope, which can [...]

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SteelGuard-yolo: Steel surface defect detection network based on improved YOLOv5s

Z. Zhou, M. Yuan

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 29

Abstract
Steel is playing an increasingly important role in industry, and the detection of defects on its surface is also of great significance. The complex and diverse defects on [...]

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Research on thyroid nodule segmentation using an improved U-Net network

P. Xu

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 28

Abstract
To develop a precise neural network model designed for segmenting ultrasound images of thyroid nodules. The deep learning U-Net network model was utilized as the main backbone, [...]

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Museum achieving future sustainable development: A study on the attraction of historical exhibits in museum nursing direction

Z. Zhang, Z. Li

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 27

Abstract
This research aims to explore the method of combining digital twins (DTs) with Convolutional Neural Network (CNN) algorithms to analyze the attraction of museum historical [...]

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Quantum dynamics of dissipative Chern insulator

J. Zhong, X. Li

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 26

Abstract
For open quantum systems, a short-time evolution is usually well described by the effective non-Hermitian Hamiltonians, while long-time dynamics requires the Lindblad master [...]

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Balancing the load and scheduling the tasks using zebra optimizer in IoT based cloud computing for big-data applications

V. Vijayaraj, M. Balamurugan, M. Oberoi

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 25

Abstract

Task scheduling is one of the major problems with Internet of Things (IoT) cloud computing. The need for cloud storage has skyrocketed due to recent advancements in IoT-based technology. Sophisticated planning approaches are needed to load the IoT services onto cloud resources professionally while meeting application necessities. This is significant because, in order to optimise resource utilisation and reduce waiting times, several procedures must be properly configured on various virtual machines. Because of the diverse nature of IoT, scheduling various IoT application activities in a cloud-based computing architecture can be challenging. Fog cloud computing is projected for the integration of fog besides cloud networks to address these expectations, given the proliferation of IoT sensors and the requirement for fast and dependable information access. Given the complexity of job scheduling, it can be difficult to determine the best course of action, particularly for big data systems. The behaviour of zebras in the wild serves as the primary basis of stimulus for the development of the Zebra Optimisation Algorithm (ZOA), a novel bio-inspired metaheuristic procedure presented in this study. ZOA mimics zebras' feeding habits and their defence mechanisms against predators. Various activities are analysed and processed using an optimised scheduling model based on ZOA to minimise energy expenditures and end-to-end delay. To reduce makespan and increase resource consumption, the technique uses a multi-objective strategy. By using a regional exploratory search strategy, the optimisation algorithm may better utilise data and stays out of local optimisation ruts. The analysis revealed that the suggested ZOA outperformed other well-known algorithms. It was advantageous for big data task scheduling scenarios since it converged more quickly than other techniques. It also produced improvements of 18.43% in several outcomes, including resource utilisation, energy consumption, and make span.

Abstract
Task scheduling is one of the major problems with Internet of Things (IoT) cloud computing. The need for cloud storage has skyrocketed due to recent advancements in IoT-based [...]

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Experimental and numerical investigations on bending behavior of fixed open-web steel beams

Z. Zheng, X. Xia, W. Ji, J. Ye, J. WU, H. Lin

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 24

Abstract
The effects of opening parameters on the bending behavior of fixed open-web steel beams under static loading were experimentally investigated using six specimens of different [...]

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Calculation of the initial peak loads on thin-walled circular tubes with internal and external staggered grooves under low-velocity impacts

S. Chen, M. Zhang, L. Zhao, T. Wei

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 23

Abstract
Thin-walled cylindrical tube structures with particular defects exhibit more stable energy absorption characteristics and lower initial peak loads when subjected to axial [...]

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Study on heat transfer characteristics of pulsating heat pipe heat exchanger with asymmetric structure

J. Liu, D. Liu, F. Shang, K. Yang, X. Cao, C. Zheng

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 22

Abstract
The Pulsating Heat Pipe (PHP), lauded for its efficacy in heat transfer, is distinguished by its uncomplicated architecture, economical production, diminutive form, and robust [...]

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Numerical analysis of thermal differential distribution in Bobbin tool friction stir welding of 7075-AZ31B dissimilar alloy

Y. Liu, K. Chen, G. Zeng, Z. Wang, M. Ge, Y. Zhang

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 21

Abstract
The theoretical model of bobbin tool friction stir welding (BT-FSW) structure and dynamic process is established. Because of the great differences in properties of different [...]

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Research on computer network data security storage technology in the era of big data

L. Zhang, X. Gu, Q. Zhao

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 20

Abstract
In the burgeoning epoch of big data, the imperative for secure computer network data storage is confronted with formidable challenges, including the perils of data breaches [...]

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Carbon reduction path and economic analysis of seawater desalination in China under the “dual carbon” goal

H. Li, H. Peng, Z. Zhang

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 19

Abstract
This paper proposes a self-filling exhaust-type natural vacuum solar distillation system for seawater desalination, which aligns with China’s “green, low-carbon, [...]

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A fully distributed algorithm for dynamic economic dispatch of cross regional power systems based on alternating direction multiplier method

S. He, W. Cai, H. Zhang, T. Wang, X. Qiao

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 18

Abstract
In the present study, a novel approach to dynamic economic dispatch for power systems spanning multiple regions is introduced, utilizing the alternating direction multiplier [...]

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Research on the influence and characteristics of ocean waves on the stability of near-surface UUVs

C. Zhou, J. Wang, H. Li, Y. Li, P. Sun

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 17

Abstract
Existing experimental methods or traditional numerical methods struggled to separate the resistance caused by a vessel's movement and the impact of waves. However, the [...]

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Prediction of EV charging behavior using BOA-based deep residual attention network

J. Appadurai, D. G, R. Yugha, R. Sarkar, A. Thirumalraj, B. kavin, D. Seng

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 16

Abstract
In smart city applications, electric vehicles (EVs) are rapidly gaining popularity due to their ability to help cut down on carbon emissions. Numerous environmental conditions, [...]

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Research on early fault detection method for a new distribution system based on automatic arc power

L. Wang, X. Chen, Y. Zhao, J. Yu, H. Zou

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 15

Abstract
The integration of a large amount of renewable energy sources into the new distribution system has significantly altered its fault characteristics, resulting in variable operation [...]

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Application of high-dimensional multi-objective differential evolutionary algorithm based on global ordering to heat supply pipe network resistance identification

E. Zhou, Y. Yang, J. Yu, Z. Liu, W. Xu, M. Xiang

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 14

Abstract
The distribution of resistance coefficients of heat supply pipe networks is the key data guiding the hydraulic balance adjustment of heat networks. Since the heat supply pipe [...]

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Research on the identification of modulus parameters for rigid pavement panel foundations

H. Cao, H. Zhao, X. Yan

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 13

Abstract
Based on the Pasternak two-parameter foundation model, this study establishes a dynamic model for analyzing the deflection of slabs under moving loads. The variational method [...]

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Determination of local stiffness for the joint of tunnel lining in the simulation

Z. Xiao, J. Wang, J. Wang, H. Zhou

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 12

Abstract
In the numerical simulation of shield tunnel, the treatment of joints will greatly affect the accuracy of numerical analysis. Because the stiffness of the joint is lower than [...]

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Design and structural analysis for a camber-morphing wing with deformable truss

S. Cao, S. Zhao, Y. Ni, J. Jiao

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (2), 11

Abstract
A camber-morphing wing based on a deformable truss is proposed in this paper. And then the structural analysis of the proposed camber-morphing wing is achieved. Compared with [...]

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Issue 1, 40, 2024

Analysis of deformation of levee caused by large diameter shield tunneling in river crossing tunnel

L. Zhongxiang, S. Lingchao, R. Abdullah, M. Shahrin, C. Yintao, S. Xin, F. Wenju, A. Islam, Z. Hengxu

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 10

Abstract
This study utilizes ABAQUS finite element software to analyze embankment deformation during shield tunneling. Results reveal that shield tunneling effects are manageable.The [...]

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Research on seismic performance of corrugated web rigid structures

H. Cao, G. Wang, H. Liu

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 9

Abstract
Corrugated web H-beam refers to a steel beam with a wavy shape along its length, which is extensively utilized in various parts of building structures such as beams, columns, [...]

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Robust adaptive fault tolerant control for nonlinear systems with actuator failure and mismatched disturbance

X. Tao, J. Jiang

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 8

Abstract
In this paper, a class of nonlinear system with mismatched disturbance and actuator failure is investigated. A disturbance observer is proposed to estimate the disturbance [...]

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Reliable iterative techniques for solving the KS equation arising in fluid flow

M. Alotaibi, D. Rizk, A. Al−Hanaya, A. Hagag

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 7

Abstract
In this study, we examine the Kuramoto-Sivashinsky equation, which is a nonlinear model that describes several physical and chemical events arising in fluid flow. The approximate [...]

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Design and optimization of Halbach magnetic gear

P. Wang, J. Yang, Y. Ge

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 6

Abstract
This article proposes a new structure to enhance the torque and torque density of permanent magnet gears. The outer magnet is designed with a dual-layer permanent magnet configuration, [...]

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Analytical solution for one-dimensional consolidation of structured soft soils with continuous drainage boundary

J. Feng, X. Ma, X. Liu, L. Wang, Z. Wu, G. Mei

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 5

Abstract
A closed form analytical solution is proposed to analyze the one-dimensional consolidation behavior of structured saturated clay soils under continuous drainage boundary. [...]

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Humor detection using deep learning in 10 years: A survey

C. Ren, Z. Guo, P. Zhang, Y. Gao

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 4

Abstract
Humor is an important part of personal communication. How to create a computational model to recognize humor is still a very challenging task in natural language processing [...]

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Sensitivity analysis of stability of anti-dip rock slope under fluctuating water level in the Three Gorges Reservoir Area

W. Jiang, W. Yi, G. Han, G. Chen, G. Sun

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 3

Abstract
The fluctuation of water levels in large reservoirs has long been recognized as a critical external factor that affects the stability of bank slopes. However, there have been [...]

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Microstructure effect analysis of carbon black-filled rubber composites

L. Huang, X. Tao, T. Wei, Z. Li

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 2

Abstract
The unidirectional tensile stress-strain curves of four kinds of carbon black-filled rubbers with different volume contents were obtained by mechanical experiments, and the [...]

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Research of an EPB shield pressure and depth prediction model based on deep neural network and its control device

J. Shao, J. Ling, R. Zhang, X. Cheng, H. Zhang

Rev. int. métodos numér. cálc. diseño ing. (2024). Vol. 40, (1), 1

Abstract
Based on the construction data of Fuzhou Metro Line 4 in Fujian Province, China, this paper proposes a soil pressure prediction model that combines Long Short-Term Memory [...]

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Volume 39, 2023

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Volume 32, 2016

Volume 31, 2015

Volume 30, 2014

Volume 29, 2013

Volume 28, 2012

Volume 27, 2011

Volume 26, 2010

Volume 25, 2009

Volume 24, 2008

Volume 23, 2007

Volume 22, 2006

Volume 21, 2005

Volume 20, 2004

Volume 19, 2003

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Volume 16, 2000

Volume 15, 1999

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Volume 11, 1995

Volume 10, 1994

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Volume 8, 1992

Volume 7, 1991

Volume 6, 1990

Volume 5, 1989

Volume 4, 1988

Volume 3, 1987

Volume 2, 1986

Volume 1, 1985

Online first articles (not assigned to a volume)

Estimación del gasto máximo en cauces que producen inundaciones mediante simulación numérica, información geoespacial y algoritmos evolutivos
H. Esqueda, S. Botello, S. Valdez

Rev. int. métodos numér. cálc. diseño ing. (Online first).

Abstract
Floods produce enormous human and material losses every year. Evaluating their extent and severity, and especially simulating possible future scenarios can improve the response, mitigation and prevention of the effects of this phenomenon. This paper presents a methodology to reproduce the extent of floods produced by channel overflows and recorded by satellite images, identifying the maximum discharge that produced it by means of the numerical solution of the 2D shallow water equations and Differential Evolution. The objective is to minimize the difference between the extent of the flooded area recorded in the satellite images, and that obtained in the simulation by adjusting the maximum value of the flow curve used at the entrance of the channel in the solution domain. The proposal is applied to data and images corresponding to an area located south of the city of Villahermosa, in the Mexican state of Tabasco, which is an area susceptible to flooding by the overflow of the Río de la Sierra. Our proposal shows that it is possible to have more accurate information on the extent and height of water in the flooded area than that shown by the satellite, which can be used as information for prevention and mitigation plans for the adverse effects of flooding. Palabras clave: Modelado de inundaciones, gasto máximo en ríos, Iber, evolución diferencial
Abstract
Floods produce enormous human and material losses every year. Evaluating their extent and severity, and especially simulating possible future scenarios can improve the response, [...]
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Electromyographic Insights and Simulations of Core Training in Compression Tights: Implications for Performance and Wearable Ergonomic
Q. Zhou, Y. Wang

Rev. int. métodos numér. cálc. diseño ing. (Online first).

Abstract
In exploring the performance-enhancing effects of compression sportswear, this study investigates its impact on trunk muscle activation during core stability training, with a particular focus on the biomechanical implications of this relationship. This research posits the existence of an Equilibrium Point of Motion (EPM) and employs surface Electromyography (EMG) to measure muscular responses in the Erector Spinae (ES), External Oblique (EO), and Rectus Abdominis (RA) during exercises performed with and without compression wear. Results revealed that compression garments significantly augment root mean square (RMS) values for ES and EO muscles, suggesting differential muscle activation patterns. Further, the application of OpenSim modeling of full-body musculoskeletal mechanics facilitated a novel analysis of muscle forces and activations, enhancing the understanding of sportswear functionality in an ergonomic context. This approach uncovered significant correlations between actual and simulated muscle activations, particularly for the ES and EO during a gluteal bridge exercise. These insights contribute to the development of ergonomically-engineered sportswear aimed at optimizing athletic performance and provide a valuable reference for future sportswear design and research.
Abstract
In exploring the performance-enhancing effects of compression sportswear, this study investigates its impact on trunk muscle activation during core stability training, with [...]
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Process Study on Removal of Recast Layer and Orifice Repairing Based on Electrochemical Finishing Machining
Q. Liu, M. Klim, B. Duan, R. Chen

Rev. int. métodos numér. cálc. diseño ing. (Online first).

Abstract
'''A slip film control technique based on an expansion state observer is proposed to address issues such as unclear internal characteristics of cotton-picking hydraulic equipment, modeling difficulties owing to external random disturbances, poor output speed stability, and limited controllability. First, a third-order mathematical model of the valve-controlled motor is established. Then the unmodeled model's dynamic errors and load disturbances are uniformly integrated in-to the 'total disturbances' for real-time estimation and compensated to the sliding-mode controller combined with the expanded state observer by the second-order expanded state observer, and finally, a complete valve-controlled motor system is constructed in the 'MATLAB/Simulink-AMESim' simula. The simulation test results show that the control algorithm is faster, more stable, and more resistant to interference than the PID controller and the backstepping sliding mode controller, with control accuracy improved by 94.5% and 85.6%, respectively, and hydraulic motor output with a constant rotational speed is achieved. '''Key words:''' Expansion state observer; cotton picking head; hydraulic servo system; valve-controlled motor system; constant speed control.
Abstract
'''A slip film control technique based on an expansion state observer is proposed to address issues such as unclear internal characteristics of cotton-picking [...]
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Process Study of Removal of Recast Layer and Orifice Repairing Based on Electrochemical Light Finishing Machining
S. Song, A. Seryazdan

Rev. int. métodos numér. cálc. diseño ing. (Online first).

Abstract
'''This research is aimed at Laser processing of micro holes there are recast layer and microcracks, analyzed the laser processing of recast layer formation mechanism and surface geometry features not, and for the laser processing of the formation of the recast layer in the process of analog simulation, for electrochemical finishing processing to remove the recast layer to provide a theoretical basis. The laser-electrolysis asynchronous composite processing experimental system was developed, and the electrolytic removal of recast layer on the wall of laser perforated holes and the process research of aperture trimming were carried out, which mainly analyzed the effects of electrolysis voltage, electrolyte and pulse electrolysis parameters on the rate of electrolysis and the effect of the removal of the recast layer. The cathode lifting method is also proposed to lift the tool cathode for orifice shaping after effective removal of the recast layer. The experimental results show that: when the current density is greater than 10.09 A/cm2, the electrolysis rate is proportional to the voltage; when the constant voltage electrolysis, the mixed solution of NaNO3 and NaCl enhances the effect of the recast layer removal significantly, and relative to the single solution with the same electrical conductivity, the value of the change in the surface roughness of the workpiece before and after the finishing process is enhanced more significantly, and there is no significant difference in the processing efficiency; the low-frequency wide pulse and high-frequency narrow pulse in the pulse electrolysis processing is favorable for the removal of recast layer. Pulse, high-frequency narrow pulse is conducive to the improvement of electrolysis rate, and the frequency of 1 kHz, the duty cycle of 40% to 60% of the electrolysis rate is the largest; at the same time, the use of cathodic enhancement method of aperture trimming processing, the use of the truncation effect, through the appropriate electrolytic processing parameters, to achieve the complete removal of the laser hole hole wall recast layer at the same time to complete the aperture trimming processing, to meet the demand for the use of performance of the small holes to further enhance the processing efficiency and small holes, and to improve the processing efficiency of the laser hole. Enhance the processing efficiency and functionality of small holes. '''Key words:''' laser processing；recast layer simulation；electrochemical finishing；cathodic lift;
Abstract
'''This research is aimed at Laser processing of micro holes there are recast layer and microcracks, analyzed the laser processing of recast layer formation mechanism [...]
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ALEX H. BARBAT E.T.S. de Ing. de Caminos, Canales y Puertos Univ. Politéc. de Cataluña, Barcelona, ESPAÑA	MANUEL DOBLARÉ Centro Politécnico Superior Univ. de Zaragoza, Zaragoza, ESPAÑA	CARLOS A. MOTA SOARES Instituto Superior Técnico Univ. Técnica de Lisboa, Lisboa, PORTUGAL
ALVARO COUTINHO Programa de Engenharia Civil, COPPE/ Univ. Federal do Rio de Janeiro, BRASIL	JOSÉ Mª GOICOLEA E.T.S. Ing. de Caminos, Canales y Puertos Univ. Politécnica de Madrid, Madrid, ESPAÑA	JAVIER OLIVER E.T.S. de Ing. de Caminos, Canales y Puertos Univ. Politéc. de Cataluña, Barcelona, ESPAÑA
FRANCISCO CHINESTA Dept. of ComputationalMechanics Ecole Centrale de Nantes, Nantes, FRANCE	ANTONIO HUERTA E.T.S. de Ing. de Caminos, Canales y Puertos Univ. Politéc. de Cataluña, Barcelona, ESPAÑA	BENJAMÍN SUÁREZ E.T.S. de Ing. de Caminos, Canales y Puertos Univ. Politéc. de Cataluña, Barcelona, ESPAÑA

EDITORES DE HONOR
EDUARDO DE ARANTES E OLIVEIRA Instituto Superior Técnico Univ. Técnica de Lisboa, Lisboa, PORTUGAL	MANUEL CASTELEIRO† E.T.S. de Ing. de Caminos, Canales y Puertos Univ. Politécnica de A Coruña, ESPAÑA
JUAN CARLOS HEINRICH Dept. of Mechanical Engineering Univ. of New Mexico, Albuquerque, USA
Anteriores Editores de Honor	O.C. ZIENKIEWICZ† Univ. of Swansea, UK	J.H. ARGYRIS† Univ. of Stuttgart, GERMANY

COMITÉ EDITORIAL
CARLOS AGELET DE SARACIBAR E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	RAMÓN CODINA E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	PAULO LYRA Univ. Federal de Pernambuco Recife, BRASIL
ENRIQUE ALARCÓN E.T.S. de Ingenieros Industriales Univ. Politécnica Madrid, ESPAÑA	RAFAEL CORREA Fac. Ciencias Físicas y Matemáticas Univ. de Chile, Santiago, CHILE	GUILLERMO MARSHALL Fac. Ciencias Exactas y Naturales Univ. de Buenos Aires, ARGENTINA
EDUARDO ALONSO E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	MARCELA CRUCHAGA Dpto. de Ing. Mecánica, Univ. de Santiago de Chile, CHILE	FRANCISCO MICHAVILA E.T.S. de Ing. de Minas, Univ. Politéc. Madrid, ESPAÑA
JOSÉ ALVES COPPE, Univ. Federal de Rio de Janeiro Rio de Janeiro, BRASIL	J.M.A. CÉSAR DE SÁ Inst. Eng. Mecânica, Faculdade de Eng, Univ. do Porto, PORTUGAL	JUAN MIQUEL CANET E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA
PILAR ARIZA E.T.S. de Ing. Industriales Univ. de Sevilla, ESPAÑA	ELÍAS CUETO Centro Politécnico Superior Univ. de Zaragoza, ESPAÑA	FERMÍN NAVARRINA E.T.S. de Ing. de Caminos Univ. de la Coruña, ESPAÑA
FRANCISCO ARMERO Dept. of Civil and Environmental Eng. Univ. of California at Berkeley, USA	MICHELE CHIUMENTI E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	SERGIO OLLER E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA
MARINO ARROYO E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	PEDRO DÍEZ E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	FEDERICO PARÍS E.T.S. Ingenieros Industriales Univ. de Sevilla, ESPAÑA
MIGUEL ÁNGEL ASTIZ E.T.S. Ing. de Caminos Univ. Politéc. de Madrid, ESPAÑA	JOSÉ DOMÍNGUEZ ABASCAL E.T.S. Ingenieros Industriales Univ. de Sevilla, ESPAÑA	MANUEL PASTOR E.T.S. Ing. Caminos Univ. Politéc. de Madrid, ESPAÑA
GUSTAVO AYALA Inst. Ing. Univ. Nac. Autónoma de México,MÉXICO	EDUARDO N. DVORKIN Simulación y Tecnología Buenos Aires, ARGENTINA	JAUME PERAIRE Dept. Aeronautics & Astronautics Mass. Inst. Tech., Cambridge, USA
ESTEVAM B. DE LAS CASAS Dept. Eng. Estruturas Univ. Federal Minas Gerais, Belo Horizonte, BRASIL	GUILLERMO ETSE Laboratorio de Estructuras Univ. Nac. de Tucumán, ARGENTINA	FRANCO PERAZZO Dpto. Mecánica Univ. Téc. Federico Santa María, Valparaíso, CHILE
ALFREDO BERMÚDEZ DE CASTRO Dpto. Matemática Aplicada Univ. Santiago Compostela, ESPAÑA	RUI M. FARIA Faculdade de Engenharia da Univ. de Porto, PORTUGAL	JOSÉ CARLOS PEREIRA Instituto Superior Técnico Universidade Técnica de Lisboa, PORTUGAL
JAVIER BONET School of Engineering Swansea University, UK	RAUL A. FEIJÓO Lab. Nacional de Computação Científica, Rio de Janeiro, BRASIL	JOSÉ LUIS PÉREZ APARICIO E.T.S. de Ingenieros del Diseño Univiversidad Politécnica de Valencia, ESPAÑA
SALVADOR BOTELLO Facultad de Ingeniería Civil Univ. de Guanajuato, MÉXICO	CARLOS A. FELIPPA Dept. of Aerospace Eng. Sciences Univ. of Colorado at Boulder, USA	PAULO PIMENTA Universidade Politécnica de São Paulo, BRASIL
GABRIEL BUGEDA E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	RAFAEL GALLEGO E.T.S. de Ing. de Caminos Univ. Politéc. de Granada, ESPAÑA	ANTONIO RODRÍGUEZ E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA
GUSTAVO BUSCAGLIA Inst. Ciências Mat. e Computação Univ. de São Paulo, BRASIL	JAVIER GARCÍA DE JALÓN E.T.S. de Ingenieros Industriales Univ. Politéc. de Madrid, ESPAÑA	IGNACIO ROMERO E.T.S. Ingenieros Industriales Universidad Politécnica de Madrid, ESPAÑA
BEGOÑA CALVO Centro Politécnico Superior Univ. de Zaragoza, ESPAÑA	ANTONIO GENS E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	VITORIANO RUAS Laboratoire de Modélisation en Mécanique Université Pierre et Marie Curie Paris, FRANCIA
ALBERTO CARDONA CIMEC - INTEC Univ. Nacional del Litoral, Santa Fe, ARGENTINA	LUIS A. GODOY Dpto. de Estructuras Univ. Nacional de Córdoba, ARGENTINA	ADELIA SEQUEIRA Instituto Superior Técnico Universidade Técnica de Lisboa, PORTUGAL
JESÚS CARRERA Consejo Sup. Investigaciones Científicas, IDAEA, Barcelona, ESPAÑA	MIGUEL A. GUTIÉRREZ Mech., Maritime and Materials Eng. TU Delft, NETHERLANDS	MARIO STORTI CIMEC - INTEC Universidad Nacional del Litoral Santa Fe, ARGENTINA
DIEGO CELENTANO Escuela Ingeniería Pontificia Univ. Católica de Chile, Santiago, CHILE	ISMAEL HERRERA Inst. Geofísica Univ. Nac. Autónoma de México, MÉXICO	JOÃO TEIXEIRA DE FREITAS Instituto Superior Técnico Universidade Técnica de Lisboa, PORTUGAL
MIGUEL CERROLAZA E.T.S. Ing. Caminos, Canales y Puertos Univ. Politéc. Cataluña, ESPAÑA	RAINALD LÖHNER Dept. of Comp. and Data Sciences George Mason Univ., Fairfax, VA, USA	ZHANG YIMING School of Construction Engineering, Zhejiang Sci-Tech University, China

EDITORES
EUGENIO OÑATE E.T.S. de Ingenieros de Caminos Canales y Puertos Centro Internacional de Métodos Numéricos en ingenieria (CIMNE), Univ. Politécnica de Cataluña, Barcelona, ESPAÑA	SERGIO R. IDELSOHN Univ. Nacional del Litoral, Santa Fe, ARGENITNA ICREA en el Centro Internacional de Métodos Numéricos en ingeniería (CIMNE), Barcelona, ESPAÑA

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Oñate, Eugenio 3211

Idelsohn, Sergio 170

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