TY  - EJOU
AU  - Yusa, Yasunori 
AU  - Yoshimura, Shinobu 

TI  - Speedup of Elastic–Plastic Analysis of Large-scale Model with Crack Using Partitioned Coupling Method with Subcycling Technique
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2014
VL  - 99
IS  - 1
SN  - 1526-1506

AB  - To speed up the elastic–plastic analysis of a large-scale model with a crack in which plasticity is observed near the crack, the partitioned coupling method is applied. In this method, the entire analysis model is decomposed into two non-overlapped domains (i.e., global and local domains), and the two domains are analyzed with an iterative method. The cracked local domain is modeled as an elastic–plastic body, whereas the large-scale global domain is modeled as an elastic body. A subcycling technique is utilized for incremental analysis to reduce the number of global elastic analyses. For a benchmark problem with 6 million degrees of freedom, the developed partitioned coupling solver with the subcycling technique was 3.34 times faster than the developed conventional FEM solver.
KW  - Fracture mechanics
KW  -  plasticity
KW  -  nonlinear finite element method
KW  -  coupled analysis
KW  -  iterative methods

DO  - 10.3970/cmes.2014.099.087