Author:
Schaeffer David G.,Shearer Michael
Abstract
This paper solves a class of one-dimensional, dynamic elastoplasticity problems for equations which describe the longitudinal motion of a rod. The initial conditionsU(x, 0)are continuous and piecewise linear, the derivative ∂U/∂x(x, 0) having just one jump atx= 0. Both the equations and the initial data are invariant under the scalingŨ(x, t) = α−1U(αx, αt), where α > 0; hence the termscale-invariant. Both in underlying motivation and in solution, this problem is highly analogous to the Riemann problem from gas dynamics. These ideas are applied to the Sandler–Rubin example of non-unique solutions in dynamic plasticity with a nonassociative flow rule. We introduce an entropy condition that re-establishes uniqueness, but we also exhibit problems regarding existence.
Publisher
Cambridge University Press (CUP)
Reference21 articles.
1. Geomaterials: Constitutive Equations and Modelling
2. [13] Nouri A. 1991 Problémes hyperboliques en élasto-plasticité dynamique. Thesis in Applied Mathematics, University of Nice.
Cited by
9 articles.
订阅此论文施引文献
订阅此论文施引文献,注册后可以免费订阅5篇论文的施引文献,订阅后可以查看论文全部施引文献