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Can anyone please tell how do we differentiate between "Crack propogation" and "Fracture initiation". A simple example will be much appreciated!

Hi Everyone.

Can anybody please expalin me what is the meaning of "PIECEWISE" in Ls-Dyna material "MAT_PIECEWISE_LINEAR_PLASTICITY(MAT_24)".

 Thanks in Advance.

hello dear friends,

I am trying to conduct a pushover analysis on a 2D dam model by abaqus.the material is concrete and is modeled by damage plasticity. the problem is because of the softening issue ,while I apply force, the solution would not converge with a low magnitude of load and it remains elastic so I can not obtain a complete pushover curve. I have very little time to get the results so I appreciate anyone who would help.

Thanks 

January 21-23, 2013, Ein Gedi, Israel

Hi everyone,

I want to ask, does anyone know how to design vanes for unsymmetrical elbow? At least can you give me some calculation recommendations to design it? I am doing air simulation inside ductings for my final project. Thanks all

i working on impact, and I should model the penetration in armour, last time i modeled it by LS -DYNA and now I working with abaqus, but it does not have material model for ceramic. accordingly, i should write the VUMAT, but i do not know how I start.

I need some reference for starting to write subroutine. please help me

hello,



I am working on modeling of Continuum damage in isotropic materials. I have written a Matlab code for modeling of a continuous damage and I have verified it with several examples. In this modeling, I have mesh-size independent through the smeared damage model. Now, my aim is to present a continous-discontinous model.

Likun Tan, Amit Acharya and Kaushik Dayal (CMAME, 2013)

Please see the attached file for details.

Kenneth Liechti

AMD Executive Committee