I am currently running a Quasi-Static compression simulation in Abaqus Explicit using the Johnson-Cook Plasticity option. As the strain gets beyond the elastic range, the stress-strain response begins to oscillate +- 5 MPa around the expected curve. Does anyone know why this is happening and/or how to repair the problem?

Thanks, 

D. Barrett Hardin

Inorder to find out the residual stresses and distortions in butt weld due to thermal loads in steel plates, i have used

shell57 for thermal and shell43 for structural.The material properties used are temperature dependent.



I  carried this out in two steps.







The thermal analysis is carried out first.

A moving heat source is used to generate the temperature distribution on the plate.

HELP WANTED

I am looking for a graduate student or a Postdoc who is interested to work on a research project in modeling and simulation of self-healing surfaces and related topics.

The candidate is expected to major in Mechanical Engineering or Materials Science (background in surface mechanics / physics / tribology is preferred), to be comfortable with computational software (MATLAB, Ansys or similar), and to be enthusiastic about producing modeling/computational results and preparing publications.

Electromechanical instability in semicrystalline polymers

Xuanhe Zhao , Zhigang Suo

Abstract

Please see attached file.

Hi all,

i am doing buckling analysis in Abaqus. While crearting a new step, i dont have clear idea about the terms below

No of eigenvalues requeted:

Maximum eigenvalue of interest:

Vectors used per iteration:

Maximum no of iterations:

I want suggestion from you.

Thank You in advance

I am a bit confused about glass (silicate glass) material behvoiur. If it is viscoelastic how does it deforms? Does anyone knows any good reference?

 Thanks

Can anyone suggest a book or some other source from where i can get the history of the conception of infinitesimal. Sometimes I wonder  how and when (also, why) the great  mathematicians and thinkers conceived this breakthrough.