TY - GEN
T1 - An efficient solver for large-scale simulations of voxel-based structures using a nonlinear damage material model
AU - Stipsitz, Monika
AU - Pahr, Dieter H.
N1 - Publisher Copyright:
copyright © Crown copyright (2018).All right reserved.
PY - 2020
Y1 - 2020
N2 - Understanding the failure mechanisms of highly heterogeneous materials requires a detailed knowledge of the micro-structure and the underlying material properties. For bone, this level of information can be obtained from high-resolution computed tomography (CT). In finite element analysis (FEA), the amount of structural information combined with nonlinear material models, calls for highly efficient and parallel software tools. In order to provide such a solver, ParOSol, an existing high-performance linear solver, was extended to incorporate a simple damaged based material model. The FEA solution is found by iteratively applying the linear solver. The new solver was tested on several structures: A simple cuboid for numerical verification, a trabecular bone cube for optimizing the solver parameters and a radius segment (688 million degrees of freedom) for performance evaluation.
AB - Understanding the failure mechanisms of highly heterogeneous materials requires a detailed knowledge of the micro-structure and the underlying material properties. For bone, this level of information can be obtained from high-resolution computed tomography (CT). In finite element analysis (FEA), the amount of structural information combined with nonlinear material models, calls for highly efficient and parallel software tools. In order to provide such a solver, ParOSol, an existing high-performance linear solver, was extended to incorporate a simple damaged based material model. The FEA solution is found by iteratively applying the linear solver. The new solver was tested on several structures: A simple cuboid for numerical verification, a trabecular bone cube for optimizing the solver parameters and a radius segment (688 million degrees of freedom) for performance evaluation.
KW - Bone biomechanics
KW - High Performance Computing (HPC)
KW - Iterative Equation Solver
KW - Micro Finite Element
KW - Nonlinear Material Model
UR - http://www.scopus.com/inward/record.url?scp=85075357629&partnerID=8YFLogxK
M3 - Contribution to conference proceeding
AN - SCOPUS:85075357629
T3 - Proceedings of the 6th European Conference on Computational Mechanics: Solids, Structures and Coupled Problems, ECCM 2018 and 7th European Conference on Computational Fluid Dynamics, ECFD 2018
SP - 1994
EP - 2004
BT - Proceedings of the 6th European Conference on Computational Mechanics
A2 - Owen, Roger
A2 - de Borst, Rene
A2 - Reese, Jason
A2 - Pearce, Chris
PB - International Centre for Numerical Methods in Engineering, CIMNE
T2 - 6th ECCOMAS European Conference on Computational Mechanics: Solids, Structures and Coupled Problems, ECCM 2018 and 7th ECCOMAS European Conference on Computational Fluid Dynamics, ECFD 2018
Y2 - 11 June 2018 through 15 June 2018
ER -