TY  - EJOU
AU  - Liu, H. T.  
AU  - Han, Z. D.  
AU  - Rajendran, A. M.  
AU  - Atluri, S. N.  

TI  - Computational Modeling of Impact Response with the RG Damage Model and the Meshless Local Petrov-Galerkin (MLPG) Approaches
T2  - Computers, Materials \& Continua

PY  - 2006
VL  - 4
IS  - 1
SN  - 1546-2226

AB  - The Rajendran-Grove (RG) ceramic damage model is a three-dimensional internal variable based constitutive model for ceramic materials, with the considerations of micro-crack extension and void collapse. In the present paper, the RG ceramic model is implemented into the newly developed computational framework based on the Meshless Local Petrov-Galerkin (MLPG) method, for solving high-speed impact and penetration problems. The ability of the RG model to describe the internal damage evolution and the effective material response is investigated. Several numerical examples are presented, including the rod-on-rod impact, plate-on-plate impact, and ballistic penetration. The computational results are compared with available experiments, as well as those obtained by the popular finite element code (Dyna3D).
KW  - Rajendran-Grove ceramic model
KW  -  Material modeling
KW  -  Ceramic damage
KW  -  Meshless method
KW  -  MLPG
KW  -  High-speed impact
KW  -  Penetration and perforation

DO  - 10.3970/cmc.2006.004.043