On Contraction of Three-Dimensional Multiple Shear Mechanism Model for Evaluation of Large Scale Liquefaction Using High Performance Computing

Abstract

For more reliable evaluation of liquefaction, an analysis model of higher fidelity should be used even though it requires more numerical computation. We developed a parallel finite element method (FEM), implemented with the non-linear multiple shear mechanism model. A bottleneck experienced when implementing the model is the use of vast amounts of CPU memory for material state parameters. We succeeded in drastically reducing the computation requirements of the model by suitably approximating the formulation of the model. An analysis model of high fidelity was constructed for a soil-structure system, and the model was analyzed by using the developed parallel FEM on a parallel computer. The amount of required CPU memory was reduced. The computation time was reduced as well, and the practical applicability of the developed parallel FEM is demonstrated.

Development of a general‐purpose parallel finite element method for analyzing earthquake engineering problems

“…However, the vast CPU memory usage required for the material state parameters creates a bottleneck in the MSMM. Hotta et al 15 . proposed a reformulated MSMM to reduce the number of material state parameters.…”

“…13,14 However, the vast CPU memory usage required for the material state parameters creates a bottleneck in the MSMM. Hotta et al 15 proposed a reformulated MSMM to reduce the number of material state parameters. The reformulation is simple and involves replacing the triple integration required for the MSMM with the equivalent double integration.…”