Documents published in Scipedia

• Assessment of tailings dams using Model Order Reduction

  S. Zlotnik, C. Nasika, P. Díez, P. Gerard, T. Massart

  admos2023.

  
  

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• SEC4TD Project To Improve the Safety of Tailings Storage Facilities

  B. Bursa, P. Stefaniak, I. Kakogiannos, I. Garcia-Milà, R. Protasiuk

  admos2023.

  
  

  Abstract

  Tailings storage facilities (TSFs) are structures designed to contain tailings (a byproduct of extracting valuable minerals and metals from mined ore) and to manage associated water. Despite all the data collected and a basic understanding of the mechanisms resulting in tailings dam failures, these large structures have consistently failed over the past 50 years, causing human and economic losses and huge environmental consequences to ecosystems and local communities. Therefore, the day-to-day management of these structures is a very challenging task. One needs to focus not only on keeping the tailings discharge plan but also on the construction (the constantly raised embankments) and the structural safety of the TSFs. The operational controls comprise inspections, surveys, installation of the monitoring instrumentations, interpretation of the monitoring readings, and safety analysis of the structure. The article presents the SEC4TD project as a tool to assist the engineering and management staff in day-to-day operations related to keeping the safety of the facility structure.

  Abstract
  Tailings storage facilities (TSFs) are structures designed to contain tailings (a byproduct of extracting valuable minerals and metals from mined ore) and to manage associated [...]

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• Goal-Oriented Adaptive Finite Element Multilevel Monte Carlo with Convergence Rates

  J. Beck, Y. Liu, E. von Schwerin, R. Tempone

  admos2023.

  
  

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• Segmentation of Inhomogeneous Noisy Images via a Bayesian Model Coupled with Anisotropic Mesh Adaptation

  M. Giacomini, S. Perotto

  admos2023.

  
  

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• Comparing FE2 procedures with seamless scale-bridging using a primal and dual formulation

  K. Carlsson, F. Larsson, K. Runesson

  admos2023.

  
  

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• A Piggyback-Style Algorithm for Learning Improved Shearlets and TGV Discretizations

  L. Bogensperger, A. Chambolle, T. Pock

  admos2023.

  
  

  Abstract

  This work demonstrates how to use a piggyback-style algorithm to compute derivatives of loss functions that depend on solutions of convex-concave saddle-point problems. Two application scenarios are presented, where the piggyback primal-dual algorithm is used to learn an enhanced shearlet transform and an improved discretization of the second-order total generalized variation.

  Abstract
  This work demonstrates how to use a piggyback-style algorithm to compute derivatives of loss functions that depend on solutions of convex-concave saddle-point problems. Two [...]

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• The use of IoT technologies for advanced risk management in tailings dams

  A. Bartoli, F. Hernández-Ramírez

  admos2023.

  
  

  • 2
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• Efficient unstructured mesh deformation using randomized linear algebra in Fluid Structure Interaction

  Y. Mesri

  admos2023.

  
  

  • 2
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• Goal oriented error adaptivity for dynamic stress concentration With a Symmetric Boundary Element Galerkin Method

  S. Touhami, D. Aubry

  admos2023.

  
  

  • 2
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• Gravity Load Effects on Inelastic Simulation of Buildings Subjected to Wind Loads

  J. Judd, J. Niedens

  admos2023.

  
  

  Abstract

  Reduced-order (single-degree-of-freedom) models of buildings subjected to wind loads were analyzed to determine the effect of gravity loads on inelastic behavior. The lateral wind loads were based on data from atmospheric boundary layer wind tunnel tests to capture the temporal and spatial variation of wind pressure on a building envelope. The lateral load resisting system of the building was idealized using a bilinear relationship, and gravity load effects were introduced using a stability coefficient. Nonlinear response history analyses were solved using direct implicit integration of the equation of motion, and an energy balance was used to assess the quality of the numerical solution. The resulting response histories were used to interrogate the relationship between inelastic displacement, ductility, period of vibration, and gravity loads. The results indicate that inelastic displacements were approximately equal to the elastic displacements even in the presence of gravity loads for cross wind excitation. For along wind excitation, the inelastic displacements were approximately equal to the elastic displacements regardless of gravity loads. The findings suggest that the equal displacement concept may have application to the wind design of high-rise buildings where cross-wind loads control the design of the lateral system

  Abstract
  Reduced-order (single-degree-of-freedom) models of buildings subjected to wind loads were analyzed to determine the effect of gravity loads on inelastic behavior. The lateral [...]

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