TY  - EJOU
AU  - Le, P.  
AU  - Mai-Duy, N. 
AU  - Tran-Cong, T. 
AU  - Baker, G.  

TI  - A Numerical Study of Strain Localization in Elasto-Thermo-Viscoplastic Materials using Radial Basis Function Networks
T2  - Computers, Materials \& Continua

PY  - 2007
VL  - 5
IS  - 2
SN  - 1546-2226

AB  - This paper presents a numerical simulation of the formation and evolution of strain localization in elasto-thermo-viscoplastic materials (adiabatic shear band) by the indirect/integral radial basis function network (IRBFN) method. The effects of strain and strain rate hardening, plastic heating, and thermal softening are considered. The IRBFN method is enhanced by a new coordinate mapping which helps capture the stiff spatial structure of the resultant band. The discrete IRBFN system is integrated in time by the implicit fifth-order Runge-Kutta method. The obtained results are compared with those of the Modified Smooth Particle Hydrodynamics (MSPH) method and Chebychev Pseudo-spectral (CPS) method.
KW  - Shear band
KW  -  strain localization
KW  -  RBFN
KW  -  imperfection
KW  -  shear band formation

DO  - 10.3970/cmc.2007.005.129