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UMAT code for crystal plasticity

Submitted by Panos Efthymiadis on

Dear all,

           I would like to ask you something about prof.
Huang's subroutine. I want to verify the code, by using published
stress-strain data. But when I am plotting my stress -strain curve I am
always getting a straight line instead of a curve that shows the hardening effect. What could be a reason for this problem?

         Regards,

         Panos

p.s. I am using a single crystal, single element, and only modify the crystal orientation

IOSO Multiobjective Optimization Technology for Research and Investigations Program

Submitted by IOSOnier on

Hello, 

We start a three-year program for academician researchers, PhDs and etc. We suppose that our multiobjective IOSO optimization technology may help you in your research and investigations. 

 

What we offer for you:

Academic licenses of unique and powerful design optimization software based on IOSO optimization technology for free. 

What we anticipate from you:

References to IOSO in your publications, conference presentations and other types of your research results. 

Internship in Computational Mechanics (plasticity)

Submitted by Shabeer Khan on

Dear Members,

 Hope you will be fine. 

I am student in MSc Computational Mechanics, here in Nantes France. I am looking for an internship  which is compulsory part of master degree. I am interested in materials, processing/modeling and simulation. I would be grateful for your guidance and help.

 Thanks and Regards,

Shabeer khan 

Extended Deadline: XFEM2011 ECCOMAS Thematic Conference on Partition of Unity Enrichment and Applications Cardiff, Wales, UK

Submitted by Stephane Bordas on

Dear colleagues,



The deadline for the registration and submission of one page abstracts has been extended to the 21st February 2011.

 

XFEM 2011 is one of the successful series of

ECCOMAS thematic events.

XFEM 2011 is a medium-size conference

with a balanced participation covering both the theoretical aspects of the subject and engineering applications.

Objectives

electrical-thermal modeling in ANSYS

Submitted by behzadhemmati on

 I’m modeling a resistance spot welding process in ANSYS.  as you know in this tpic we are dealing with contact elements. in welding step I’ve  defined ECC & TCC for contact elements and also have updated geometry from squeezing step and cleared loads, however I’venot been able to achive temrature distribution. I use  from plane67 element for a electrical-thermal analysis.

Behaviour of Interface element in delamination analysis

Submitted by vanez on

Good morning,

I'm trying to simulate delamination with interface element, with a traction-jump law.

In order to see the Behaviour of the Interface element before the delamination occur, i introduce one interface element (8 nodes ) between two normal linear elastic solid element (quader with 8 nodes also).

I think the strain in the interface corresponds to the Jump

I have many difficulties:

Plastic Collapse for a pressurised vessel

Submitted by Jad Antonios Jelwan on

Hi there ,

 I'm a researcher from UNSW sydney .

 I'm working on the elastic-plastic-creep based on the exhaution of energy density.

 I've came with a new idea for plastic collapse ,which is based on the exhausion of enrgy .

 The work is not yet publish , because I would like to ask your help here .

 Does anyone know or would like to help me to have an APDL file for plastic collapse analysis in ANSYS

 

Thanks for advance

JOEFFREY

What do we do?

Submitted by Biswajit Banerjee on

Yesterday, as I was waiting for the rain to stop before I could walk home from work, a stranger accosted me in the lobby of the building.  He asked me what I did, to which I replied "Mechanics".  He mulled over the answer for a bit and asked me to be more specific, at which point I said that we were trying to design materials that could guide waves around objects.  He said "Water waves?".  I replied "All types of waves."  Clearly, common words can mean quite different things to different people.