TY  - EJOU
AU  - Ren, B.  
AU  - Qian, J.  
AU  - Zeng, X.  
AU  - Jha, A. K.  
AU  - Xiao, S.  
AU  - Li, S.  

TI  - Recent Developments on Thermo-Mechanical Simulations of Ductile Failure by Meshfree Method
T2  - Computer Modeling in Engineering \& Sciences

PY  - 2011
VL  - 71
IS  - 3
SN  - 1526-1506

AB  - Ductile failure is a complex multi-scale phenomenon evolved from the micro-voids to macro-crack. There are three main failure mechanisms behinds a ductile failure: adiabatic shear band (ASB), spall fracture, and crack. Since this type of thermo-mechanical phenomena involves large deformation and large scale plastic yielding, a meshfree method has intrinsic advantages in solving this kind of problems over the conventional finite element method. In this paper, the numerical methodologies including multi-physics approach for ASB, parametric visibility condition for crack propagation, and multi-scale approach to determine spall strength in simulating ductile failure have been reviewed. A thermo-mechanical coupling algorithm is proposed to incorporate reproducing kernel particle method (RPKM) with rate dependent Johnson-Cook model. Numerical simulations demonstrate that this meshfree method can capture the essential features of a ductile failure.
KW  - meshfree
KW  -  thermo-mechanical
KW  -  ductile failure
KW  -  adiabatic shear band
KW  -  crack
KW  -  spall fracture

DO  - 10.3970/cmes.2011.071.253