I would like to know why ABAQUS is the dominant FEM program (in terms of comments) in this forum? Why do you consider ABAQUS over ANSYS?

I have been using ANSYS for at least 8 years and I am very please with the capabilities of it. But I have not seen ABAQUS or used it. Beside, reading all the comments that are posted in imechanica, I feel like I am using the wrong FEM program. 

Which are the advantage of ABAQUS over ANSYS?

Thank you,

 Mario J . Juha

Hello,

I'm new in this forum and I've a problem that i can't resolve.

I need to model nitinol in Abaqus: I've red the documentation and many topic in Internet but I don't understand if I must use a VUMAT subrutine or it is sufficent the tool of user defined material in Abaqus/CAE. I need something simple like an elastoplatic behaviour with hysteresis given by the different states of austenite and martensite.

Thanks in advance,

 Jam3s

Attention all iMechanicians!  If you have a theme you would like to see in the Journal Club next year, please feel free to:

1. post it here for discussion
2. send it to me via email
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Thanks in advance!

Let us consider interaction of two atoms/molecules/particles. The reference distance between them corresponds to zero interaction force and zero stored energy. The interaction passes three stages with the increase of the distance. At the first stage the force increases proportionally to the increasing distance: the linear stage. At the second stage the force-distance relationship deviates from the linear proportionality: the nonlinear stage. At the third stage the force drops with the increasing distance: the separation or failure stage.

The Congress will be held on 27 June – 2 July 2010, at the Pennsylvania State University.  The deadline for submitting abstract is 15 October 2009.

I plan to submit the attached paper on quantum mechanical definition of stress in the next few weeks. Comments and feedback are welcome. Fair amount of work has been done on stress definition in the context of classical molecular dynamics (also attracting some controversies). In contrast, there appear to be several open issues in the quantum case. Hopefully, the attached paper provides a starting point.

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Program for the 3rd International Conference on Mechanics of Biomaterials & Tissues now available at http://www.icmobt.elsevier.com/programme09.htm

Plenary and keynote speakers include:

Professor Julian Vincent, Professor of Biomimetics, Bath University, UK

-Stiffness and toughness of biological materials