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Is it possible to model nonlinear elasticity in ANSYS with SOLID 18x elements?

Submitted by Freeman on
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Computational Mechanics Forum
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Nonlinear elasticity
ansys

Dear all iMechanicians ,

Since several days I am trying to simulate a granular material very similar to sand. The uniaxial compression test performed to the material shows a nonlinear elasticity behavior during the unloading curve.

The goal is to fully reproduce the behavior of the material with a nonlinear elastic model when the material stress-state is inside the yield surface and the plastic behavior with a multilinear isotropic hardening law. The yield surface would be given by the Drucker-Prager-Cap criterion.

Instabilities in Magnetoactive Materials

Submitted by Stephan Rudykh on
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materials modeling
Composites
Multiphysics
active materials
laminates
instabilities
layered media

Stability of anisotropic magnetorheological elastomers in finite deformations: A micromechanical approach

Stephan Rudykh and Katia Bertoldi

Journal of the Mechanics and Physics of Solids 61 (2013) 949–967

Abstract:

PhD positions available at Polytechnique Montréal and McGill universities on shot peening with 5 aerospace companies

Submitted by martin.levesque on
research
high strain rate
metals
aerospace
shot peening
phd studies

Ecole Polytechnique and McGill are seeking two PhD candidates for a large project aiming at understanding the effects of shot peening on the fatigue lives of aerospace components. The project involves 8 PhD students that will be working in close collaboration. The project is co-funded by the Canadian goverment and 5 leading aerospace companies located in Montréal. Some projects involve internships at these companies.

We are seeking two students for the following projects:

 

Abaqus UMAT implementation

Submitted by Mandar Kulkarni on
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Computational Mechanics Forum
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UMAT
finite strain
UEXPAN

Hi,

I have a thermo-mechanical constitutive model for polymer and want to implement it in ABAQUS through two user subroutines namely UMAT and UEXPAN but I dont know how to use them together. Also, in UEXPAN, I need to pass in the strain tensor as information but I dont see 'STRAN' variable in the list of variables passed in to UEXPAN in Abaqus documentation. Does anyone know answer to this?

Thanks,

Mandar

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