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These slides are based on an on-going paper written by Wei Hong, Xuanhe Zhao and Zhigang Suo and Suo's talk in ucsb.

I am trying to implement an analytic formulae of dynamic flow stress in material plasticity in abaqus. The model is similar to FlowStress=K*(PlasticStrain^n)*(StrainRate^m). 

Could you provide help for these 2 questions?

1: Is it OK to define Young's modulus (E) and v in "Elastic" and choose "User" in "Plastic-->Hardening" with the subroutine "VUHARD", instead of by "VUMAT" with plasticity criterion and calculation of delta stress and strain?

hi friends,

 I  have coded for laminate  using matlab. for further analysis i want  code for composite plate simply supported at all 4 edges. 

 then analyse with ANSYS. and use optimization techniques for optimizing the plate.

material : Graphite /eposy

thickness of each lamina : 0.127

Seq [45 0 -45]

Please anybody know how to code for composite plate and do stress analysis using Ansys.

feel free to share ur thoughts 

Attached is my final presentation.

Here are the slides for my final presentation for ES 241.  During the presentation, a few suggestions were made, which I plan to follow up on.  Please check back here or subscribe for updates.

Here are some slides I made on the subject of "Pressure and Chemical Potential" for the final meeting of Prof. Zhigang Suo's ES 241 class in the Spring of 2009.

Please see the attached slides on electric potential, deformation and polarization.

Please see attachment for ES 241 final presentation on heat conduction and the Boltzmann distribution.

Please see attachment for ES241 final presentation--general theory of finite deformation

dear all,

            this is arasu, i am using abaqus to find out wear using contact analysis.my model rotating disc over the pin(pin on disc ) in real time.so i want    t o simulate rotating disc  at some anular velocity.if any body have some solved problem about ratating geomentry please send me.

thank you

regards

Arasu

Dear all,

I intend to read the element sets which I have in my Abaqus input file from the user material code (UMAT) and check to which elset the current element, which is characterized by "NOEL" in the UMAT, belongs.

Best,

Hadi

I am already PhD candidate of Mechanical Engineering in Southern Methodist University, Dallas, Texas. I am looking for a postdoc position with an emphasis on laser material processing. You may access my CV by:

http://lyle.smu.edu/~eforoozmeh/CV.htm

Hello all, new to the forum, so I would like to say thank you in advance for any help I may receive.

 I have been using CPS8R elements to model a plane stress problem, in conjunction with a UMAT I have developed. This has been running correctly, and the results obtained are good.

I am now running an analysis using axisymmetric elements, CAX8R.

The output from CAX8R is..... S11, S22, S33, S12. The ouput from CPS8R is....S11, S22, S12.

I have therefore updated the damage model accordingly to account for this.

While analysing through ANSYS  We  have to give the strees strain curve for fibre reinforced concrete. How stress strain curve for fibre reinforced concrete is given while analysis.I have tested compression stress on cylinder   and have stress strain curve for compressive test on cylinder

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                                                                        B.Thanukumari