Open Access

ARTICLE

A Numerical Study of Strain Localization in Elasto-Thermo-Viscoplastic Materials using Radial Basis Function Networks

P. Le¹, N. Mai-Duy¹, T. Tran-Cong¹, G. Baker²

1 CESRC, University of Southern Queensland, QLD 4350, Australia.
2 DVC(S), University of Southern Queensland, QLD 4350, Australia.

Computers, Materials & Continua 2007, 5(2), 129-150. https://doi.org/10.3970/cmc.2007.005.129

Abstract

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.

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Keywords

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