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proposed herein can deal with such imperfections through a contact degeneration technique. An | proposed herein can deal with such imperfections through a contact degeneration technique. An | ||
example shows the robustness of the method. | example shows the robustness of the method. | ||
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+ | == Full Paper == | ||
+ | <pdf>Media:Draft_Sanchez Pinedo_936926389pap_138.pdf</pdf> |
The present work proposes a contact detection algorithm for convex particles whose boundaries are mathematically defined by non-uniform B-splines (NURBS). This algorithm involves a hierarchy of contact searches, including both global and local steps. The focus is on the formulation of the local contact problem (LCP) using a master-to-master approach. It is based on computer graphics and optimization techniques. Besides the algorithm, the paper also discusses strategies for modeling particle geometry and their implications in contact detection. The use of multiple parameterizations (patches) assembled in space, for instance, provides more flexibility in the construction of particles and avoids numerical singularities. However, it leads to local geometric imperfections at the connection between patches. The LCP formulation proposed herein can deal with such imperfections through a contact degeneration technique. An example shows the robustness of the method.
Published on 23/11/23
Submitted on 23/11/23
Volume Discrete and Particle Methods in Solid and Structural Mechanics, 2023
DOI: 10.23967/c.particles.2023.024
Licence: CC BY-NC-SA license
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