A Numerical Algorithm for Elasto-Plastic Material Deformation
Commun. Korean Math. Soc. 2005 Vol. 20, No. 3, 589-602
Printed September 1, 2005
Hyun-Cheol Hwang
Kyungwon University
Abstract : We present the numerical algorithm for the model for high-strain rate deformation in hyperelastic-viscoplastic materials based on a fully conservative Eulerian formulation by Plohr and Sharp. We use a hyperelastic equation of state and the modified Steinberg and Lund's rate dependent plasticity model for plasticity. A two-dimensional approximate Riemann solver is constructed in an unsplit manner to resolve the complex wave structure and combined with the second order TVD flux. Numerical results are also presented.
Keywords : elastoplasticity, viscoplasticity, conservation laws, material deformation
MSC numbers : 74C20, 74S10, 35L65
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