| Source |
CMC: Computers, Materials, & Continua, Vol. 5, No. 2, pp. 129-150, 2007 |
| Download |
Full length paper in PDF format. Size = 1,603,556 bytes |
| Keywords |
Shear band, strain localization, RBFN, imperfection, shear band formation. |
| 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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