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, the von Mises criterion for small strain analysis is used for plane stress with mixed hardening, and the elastic predictor-radial return algorithm and a consistent tangent operator satisfy the requirements for a stable and accurate numerical procedure.
93 citations
TL;DR: In this paper, the use of generalized measures helps to bridge the gulf between the microscopic and macroscopic description of physical phenomenon, and simplify constitutive equations by prescribing a priori the order of the measure of a deformation.
Abstract: It is shown that the use of generalized measures helps (1) to bridge the gulf between the microscopic and macroscopic description of physical phenomenon; (2) to eliminate semi-empirical conditions like Tresca and von Mises and creep strain laws like those of Norton; (3) to simplify constitutive equations by prescribing a priori the order of the measure of a deformation; (4) the elimination of additional response coefficients; (5) a greater coordination between the theoretical and experimental results.
92 citations
TL;DR: In this paper, the effects of barriers, sidewalks, and diaphragms (secondary elements) on bridge structure ultimate capacity and load distribution were investigated for simple-span, two-lane highway girder bridges with composite steel and prestressed concrete girders.
Abstract: This research investigates the effects of barriers, sidewalks, and diaphragms (secondary elements) on bridge structure ultimate capacity and load distribution. Simple-span, two-lane highway girder bridges with composite steel and prestressed concrete girders are considered. The finite-element method is used for structural analysis. For the elastic range, typical secondary elements can reduce girder distribution factors (GDF) between 10 and 40%, depending on stiffness and bridge geometry. For the inelastic response, steel is modeled using von Mises yield criterion and isotropic (work) hardening. Concrete is modeled with a softening curve in compression with the ability to crack in tension. At ultimate capacity, typical secondary elements can reduce GDF an additional 5 to 20%, and bridge system ultimate capacity can be increased from 1.1 to 2.2 times that of the base bridge without secondary elements, depending on bridge geometry and secondary-element dimensions.
92 citations
TL;DR: In this paper, a stress-constrained topology optimization approach for compliant mechanism design is presented, where the maximum stress is approximated using a normalized version of the commonly-used p-norm of the effective von Mises stresses.
Abstract: This article presents an application of stress-constrained topology optimization to compliant mechanism design. An output displacement maximization formulation is used, together with the SIMP approach and a projection method to ensure convergence to nearly discrete designs. The maximum stress is approximated using a normalized version of the commonly-used p-norm of the effective von Mises stresses. The usual problems associated with topology optimization for compliant mechanism design: one-node and/or intermediate density hinges are alleviated by the stress constraint. However, it is also shown that the stress constraint alone does not ensure mesh-independency.
92 citations
TL;DR: Using a global semi-empirical alloy theory approach together with first-principles band theory, this paper showed that absence of d-band electrons near the Fermi level accounts for the observed ductility in over 90% of the phases studied to date.
91 citations