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Marc/Mentat: Von Mises Stress in cantilever beam

Submitted by MSts on

Hi,

I am performing a very simple cantilever analysis with 5 beam elements in Mentat. I get good results for deflection but Von Mises Stress is very small!! I was thinking that probably I need to connect the elements (rigid body?) or make nodal ties because the Moment Tensor is 0 in all 3 directions, but I don't know how to do it and I can't find an answer in the software documentation.

Can anybody help me?

Thanks

Number of registered users of iMechanica exceeds 20,000

Submitted by Teng Li on

As of 11 May 2010, the number of registered users of iMechanica exceeded 20,000 , the total number of posts is 8191, the total number of comments is 14557.  The growth of iMechanica community remains steady since its launch.



Founded in September 2006, iMechanica aims

XFEM Error Estimation for Fracture- PhD Fellowship/Scholarship Centre Henri Tudor/Cardiff University

Submitted by Stephane Bordas on

A PhD position is available at Centre Henri Tudor (Luxembourg) and Cardiff University (UK) on the simulation of crack propagation with adaptive extended finite element methods.

Candidates from any country are eligible. 

Please contact me for details.

Stephane

Failure Theory Applications

Submitted by Richard M. Chr… on

A new section on applications has been added to the website on failure criteria.  Six examples of failure applications are given which span the range from very ductile to very brittle isotropic and homogeneous materials.  Summarizing two of the examples, first a very ductile polymer is examined wherein its tensile, compressive, and shear strengths are determined as influenced by a state of superimposed hydrostatic pressure. An interesting fallout from the example shows just how seriously in error the Mises criterion can be, even when applied to a ductile material.

WOM 2011 - 18th International Conference on Wear of Materials, Philadelphia, USA - Call for stand alone posters.

Submitted by Laure Ballu on

Submissions are now closed for oral presentations to WOM 2011, however, contributions are invited for stand-alone posters. WOM 2011 is to take place in Philadelphia, USA - April 3-7 next year.  It will focus on both the fundamental and applied aspects of wear and friction of materials at the macro-, micro- and nano-scale. Special emphasis will be placed on wear issues in harsh environments, energy conversion, and debris particle generation and its impact on the environment.

XFEM modelling in ABAQUS

Submitted by Anonymous (not verified) on

Hi

I am modelling the crack propagation in metals. I can do all the modelling but only adding the enrichment function in ABAQUS is an issue. I have defined the initial crack(for the CT speciemn), which starts at the node, but when I submitt the job it does not separate at that node. I think it because I did not define the enrichment functions.

I would  like to know how to add enrichment function in abaqus when modelling the crack propagation. Any suggestion would be appreciated.

 

Thanks in advance

Oscar