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: In this paper, a covariant theory of finite elastoplasticity is developed in principal axes of a pair of deformation tensors for deformed lattice, whose reference and current configurations can be arbitrary space-curved surfaces.
34 citations
TL;DR: In this article, an elastic stress analysis of the interleaved end notched flexure specimen was conducted by two-dimensional finite element modeling and the authors identified mechanisms that influence the enhancement of mode II interlaminar fracture toughness.
34 citations
TL;DR: In this article, the results of the numerical study of rectangular cup drawing of steel sheets using finite element methods were discussed and an experimental study was done where the material behavior under deformation was analyzed.
Abstract: This paper discusses the results of the numerical study of rectangular cup drawing of steel sheets using finite element methods. To be able to verify the results of the numerical solutions, an experimental study was done where the material behavior under deformation was analyzed. A 3D parametric finite element (FE) model was built using the commercial FE-package ABAQUS/Standard. ABAQUS allows analyzing physical models of real processes putting special emphasis on geometrical non-linearities caused by large deformations, material non-linearities and complex friction conditions. Friction properties of the deep drawing quality steel sheet were determined by using the pin-on-disc tribometer. The results show that the friction coefficient depends on the measured angle from the rolling direction and corresponds to the surface topography. A quadratic Hill anisotropic yield criterion was compared with von Mises yield criterion having isotropic hardening. The sensitivity of constitutive laws to the initial data characterizing material behavior is also presented. It is found out that plastic anisotropy of the matrix in ductile sheet metal has influence on deformation behavior of the material. When the material and friction anisotropy are taken into account in the finite element analysis, this approach gives better approximate numerical results for real processes.
34 citations
TL;DR: In this paper, the authors reported the application of this ML sensing technique to stress concentration analysis on an aluminium plate and the comparison with a theoretical calculation demonstrated that the ML intensity of SAO sensing film correlates linearly with von Mises stress on metal surface and the observed real-time ML images quantitatively reflect stress concentration.
Abstract: Dynamic visualization of stress distribution even due to a small deformation has been realized by coating the surface of the test object of metal with a upgrade mechanoluminescence (ML) material of SrAl2O4:Eu (SAO). In this paper we report the application of this ML sensing technique to stress concentration analysis on an aluminium plate. And the comparison with a theoretical calculation demonstrated that the ML intensity of SAO sensing film correlates linearly with von Mises stress on metal surface and the observed real-time ML images quantitatively reflect stress concentration.
34 citations
TL;DR: In this article, the biaxial tension stress-strain-yield behavior of glassy bisphenol A-polycarbonate has been investigated at constant octahedral shear stress rate and at 25°C and −40°C.
Abstract: The biaxial tension stress-strain-yield behavior of glassy bisphenol A-polycarbonate has been investigated at constant octahedral shear stress rate and at 25°C and −40°C. The specimens possess a small amount of anisotropy. Hill′s criterion for yielding of anisotropic materials is modified to take into account the sensitivity of the yield locus to the hydrostatic stress component. This modified yield criterion fits the 25°C data quite well. However, the data at −40°C cannot be fitted using reasonable parameters.
34 citations