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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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Journal ArticleDOI
05 Jan 2017
TL;DR: Stress-shielding effect, measured as difference between the von Mises stress in the intact and implanted femur, decreased as the elastic modulus distribution is optimized.
Abstract: This work proposes a methodology involving stiffness optimization for subject-specific cementless hip implant design based on finite element analysis for reducing stress-shielding effect. To assess the change in the stress-strain state of the femur and the resulting stress-shielding effect due to insertion of the implant, a finite element analysis of the resected femur with implant assembly is carried out for a clinically relevant loading condition. Selecting the von Mises stress as the criterion for discriminating regions for elastic modulus difference, a stiffness minimization method was employed by varying the elastic modulus distribution in custom implant stem. The stiffness minimization problem is formulated as material distribution problem without explicitly penalizing partial volume elements. This formulation enables designs that could be fabricated using additive manufacturing to make porous implant with varying levels of porosity. Stress-shielding effect, measured as difference between the von Mises stress in the intact and implanted femur, decreased as the elastic modulus distribution is optimized.

25 citations

Journal ArticleDOI
TL;DR: In this paper, a modified Drucker-Prager yield criterion was proposed to obtain asymptotic crack-tip fields for both power-law hardening and perfectly-plastic pressuresensitive materials under plane strain conditions, where the vertex is rounded off and replaced by a curved yield surface which is based on a quadratic function of the effective stress and the mean stress.

25 citations

Journal ArticleDOI
TL;DR: In this article, a closed-form elastic-plastic stress, displacements and residual stresses solution for a normally stressed or displacement-loaded hole in a finite circular plate was given based on J 2 deformation theory and the von Mises yielding criterion.

25 citations

Journal ArticleDOI
TL;DR: In this paper, a non-linear 9-node stress resultant shell finite element with six degrees of freedom per node is formulated, and the material nonlinearity is based on an implicit integration scheme using the von Mises yield criterion and linear isotropic bardening.
Abstract: A non-linear 9-node stress resultant shell finite element with six degrees of freedom per node is formulated. The material non-linearity is based on an implicit integration scheme using the von Mises yield criterion and linear isotropic bardening. The small strain geometric non-linearity is formulated using the polar decomposition theorem of continuum mechanics via a corotational updated Lagrangian method, which represents finite rotations with accuracy. Reduced integration is used to remove locking and calculate the stresses at their optimal stress accuracy points. A practical procedure is employed to stabilize the troublesome spurious zero energy modes. A number of tests covering the non-linear material and geometry ranges and buckling show the good performance of the new element.

25 citations

Journal ArticleDOI
TL;DR: In this article, the authors compared the predictions of an isotropic thermo-elasto-viscoplastic approach and of an anisotropic thermoelastoplastic one with experimental results representative of the mechanical behavior of Ti-6Al-4V at moderate temperatures and low strain rates.
Abstract: This paper compares the predictions of an isotropic thermo-elasto-viscoplastic approach and of an anisotropic thermo-elastoplastic one with experimental results representative of the mechanical behavior of Ti–6Al–4V at moderate temperatures and low strain rates. The first model is the well known Norton–Hoff viscoplastic constitutive law with isotropic von Mises yield locus identified by using monotonic tension tests performed at strain rates from 10 −3 s −1 to 10 −1 s −1 and at temperatures up to 400 °C. The second model is a thermo-elasto-plastic one defined by the orthotropic yield criterion CPB06. It takes into account the anisotropy and the strength differential (SD) effect in tension–compression of Ti–6Al–4V at RT, 150 °C and 400 °C. The identification of the SD effect is done by using tension and compression tests and the anisotropy behavior is identified by using shear, plane strain, tension and compression tests performed in three orthogonal material directions. The accuracy of the load and displacement predictions of the two macroscopic constitutive models are compared to experimental results obtained from tests performed on specimens with multiaxial loadings and large strain at several temperatures.

25 citations


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Performance
Metrics
No. of papers in the topic in previous years
YearPapers
2023319
2022722
2021216
2020226
2019173
2018162