Topic
von Mises yield criterion
About: von Mises yield criterion is a research topic. Over the lifetime, 4374 publications have been published within this topic receiving 82642 citations. The topic is also known as: Von Mises stress.
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TL;DR: A (stabilized) mixed finite element formulation with continuous linear strain and displacement interpolations succeeds in overcoming the limitations of the standard formulation and provides accurate results within the vicinity of the shear bands, specifically without suffering from mesh dependency.
22 citations
TL;DR: A generalized anisotropic hardening rule based on the Mroz multi-yield-surface model for pressure insensitive and sensitive materials is derived in this paper, where the evolution equation for the active yield surface with reference to the memory yield surface is obtained by considering the continuous expansion of the active yielding surface during the unloading/reloading process.
22 citations
TL;DR: In this paper, the influence of a deformable indenter by comparing the finite element results for a deformation indenter with those of a rigid indenter was evaluated. And the results showed that, when the indenter is assumed to be rigid, the contact pressures in the elastic regime are higher than those given by the deformable indenters, as deformation proceeds and plasticity becomes dominant, the differences between the three sets of results reduce.
Abstract: The main purpose of this paper is to assess the influence of a deformable indenter by comparing the finite element results for a deformable indenter with those of a rigid indenter. Elastic-plastic solutions for the case of a stiff hard layer rigidly bonded to a softer substrate are given and the effect of the indenters (i.e. rigid; deformable, E = 600 GPa; deformable, E = 1000 GPa) on the contact pressures and stresses and strains are critically examined. The results showed that, when the indenter is assumed to be rigid, the contact pressures in the elastic regime are higher than those given by the deformable indenters. However, as deformation proceeds and plasticity becomes dominant, the differences between the three sets of results reduce. The rigid indenter results were also shown to give the lowest peak radial tensile stress which is responsible for cracking of the film normal to the surface. Finally, comparison of the von Mises stress contours revealed that varying the indenter properties affects the point at which yielding commences. Results showed that the rigid indenter caused the coating and substrate to yield prematurely, i.e. at a lower load than the deformable indenters.
22 citations
TL;DR: In this article, the authors investigated the thermoelastic frictional contact responses of an elastic sphere sliding on an elastic layer-substrate system involving imperfect interfaces and found that a stronger discontinuity of interface displacements causes the contact pressure, temperature, and in-plane compressive stress to decrease, but the inplane tensile stress, out-of-plane (compressive and tensile) stress, and von Mises stress to increase.
22 citations
TL;DR: In this article, a numerical analysis of the optimum degree of cold expansion for different materials using finite element method has been carried out to calculate the position of instability, the ultimate stress corresponding to the point of instability on the true stress-true strain curve.
22 citations