TY  - EJOU
AU  - Yao, Zhenhan  
AU  - Zhang, fei  
AU  - Zhang, Xi  

TI  - Some Application of MLPG in Large Deformation Analysis of Hyperelasto-Plastic Material
T2  - The International Conference on Computational \& Experimental Engineering and Sciences

PY  - 2007
VL  - 3
IS  - 3
SN  - 1933-2815

AB  - The Meshless Local Petrov-Galerkin (MLPG) Method is applied to solve large deformation problems of elasto-plastic materials. In order to avoid re-computation of the shape functions, the supports of MLS approximation functions cover the same sets of nodes during the deformation; fundamental variables are represented in spatial configuration, while the numerical quadrature is conducted in the material configuration; the derivation of shape function to spatial coordinate is pushed back to material coordinate by tensor transformation. For simulating both large strain and large rotation, the multiplicative hyperelasto-plastic constitutive model is adopted for path-dependent material. Numerical results indicate that the MLPG method can solve large deformation and large rotation of elasto-plastic materials accurately. Moreover, it can simulate the strain localization phenomenon induced by material instability of strain softening materials.
KW  - 

DO  - 10.3970/icces.2007.003.133