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Opening for new Ph.D. students in the Computational Mechanics group, The University of Iowa

Submitted by Vaibhav Yadav on

The Computational Mechanics group at The University of Iowa, led by Professor S. Rahman,

is looking for new Ph.D. students, who are capable of and interested in performing

high-quality research on reliability-based design optimization.  The research, supported

by NSF and others, entails developing new theory and efficient algorithms for stochastic

computing and design optimization. A solid background in mechanics and elementary

numerical analysis is a must; some exposure to uncertainty and probabilistic methods is

desirable.

Contact analysis in Abaqus

Submitted by cgouder on

Dear Friends. 

                   I am trying to model a moving truck on a bridge . Initially I want to try doing a static analysis. For this , I have modeled tyres as analytically rigid cylinders and, placing them on the solid slab element . After this i have applied a velocity boundary condition to the rigid cylinder , and also a load ( Pointing in the direction of gravity) to the reference point . 

XFEM

Submitted by miad on

The new feature of XFEM was added to the ABAQUS6.9-2. Does anybody
know how can I extract the current configuration of crack in terms of distance
values from nodes? I know that PHILSM provides information on this issue, but
it is only about crack plane. I want nodal distance from crack front

 

A funny error

Submitted by Arash Zamani on

Dear All,I have written a finite element code in C++. The results have generally high accuracy. But when I change the order of evaluating r and theta of the polar coordinates in terms of x and y in the sub-program of computing the shape functions, then the results are changed about 10^-9 of the initial results. The change is negligible but I wonder why this happens? I had initially supposed it may be related to some memory linkage in the program but since now I have not been successful to find any. Is there any one to have an idea about this funny error???

A funny error

Submitted by Arash Zamani on

Dear All,

I have written a finite element code in C++. The results have generally high accuracy. But when I change the order of evaluating r and theta of the polar coordinates in terms of x and y in the sub-program of computing the shape functions, then the results are changed about 10^-9 of the initial results. The change is negligible but I wonder why this happens? I had initially supposed it may be related to some memory linkage in the program but since now I have not been successful to find any. Is there any one to have an idea about this funny error???