Blog posts

In this contribution (see http://arxiv.org/abs/1306.4385), we derive lower and upper bounds for Wachspress coordinates over any simple d-dimensional simple convex polytope.  Numerical results for the Poisson equation on nontrivial polyhedral meshes are presented that affirm the linear rate of convergence in the energy seminorm of the polyhedral finite element method.  Matlab code to compute the Wachspress shape functions and its gradient on convex polygonal and polyhedral elements is also provided.

These two papers (with one on beams and the other on plates) have recently been
published online:

http://link.springer.com/article/10.1007/s00033-013-0343-z

http://link.springer.com/article/10.1007/s00707-013-0880-8

The Automated Computational Mechanics Laboratory (ACML) in the Department of Mechanical and Aerospace Engineering at The Ohio State University has one open PhD position for Spring 2014.  The research in ACML is focused on the implementation of advanced finite element and meshfree methods for the computational modeling of materials with complex geometries, corrosion, damage/fracture mechanics, and multi-physics simulations.

IGA 2014: Isogeometric Methods – Integrating Design and Analysis, a USACM/ICES thematic conference, will take place at the AT&T Executive Education and Conference Center, University of Texas at Austin, on January 8-10, 2014 (see attachment). For further information, please contact: info [at] usacm.org

hi,

 I am trying to model pullout behaviour in abaqus. i generated my 3d model with the help of texgen and i am applying velocity b.c.s to simulate pullout. I am expecting that NFORC beneath the point of applying velocity will give the pullout load. am i correct?. If not, wat will fetch my query?

if my sum up the reactions at the boundary i may not get the pullout load becoz of the frictional force between the fabric interface. 

Hello,

I  want to solve some problem from solid mechanics by means of meshless methods. Do you know some interpolation/approximation method which is able to accurate evaluate 3rd and 4th derivations of the shape functions and is not difficult to implement? MLS or PIM have problem with accuracy in these derivatives, as is known.

Thank you very much for your advices.

Hi

I have imported my Hypermesh model to abaqus. While running the .inp file I am getting the error message  the keyword is misplaced in definition of surface.

Can anyone tell that what is the exact sequence to define the surface in .inp file.

I am attaching my input and error message file.