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Hi Fellows

Dear all:

I am confused by the "traction free boundry condition". Does that mean the stress on the boundry is zero? But the stress on the boundry is definitly not zero. I don't know how to use this condition. I hope someone can help me. Thanks very much.

Best wishes, 

 Hi,

I just posted the Matlab source code of our new 3D Fast Iterative Digital Volume Correlation (FIDVC) algorithm to our lab website:

franck.engin.brown.edu

The Institution of Structural Engineers, the world's leading professional body for qualifications and standards in structural engineering, and Elsevier are pleased to announce that Structures, a new peer-reviewed journal covering the full breadth of structural engineering research, is now open for submissions.

I've met some strange problems implementing umat. To speak in short, it's parallel degradation, which means when run in serial mode, everything is OK, there's no failure of equilibirium iteration and therefore no cut back, but when switch to parallel mode, there are random cut backs. I checked the process by outputing results to files and found very bizarre phenomenon, the data changes when transfering from the subroutine called to its caller. For example, if the main program calles sub(a), and in sub a is specified intent(out).

hello

I works with subroutins in ABAQUS.

I  have written a vuhard subroutin and I have some problems.

who  does work with this subroutin that can help me?

With regards

babaeeian 

Hi all, 

I need help to calculate the deformation of a circular plate(d=200mm and t=10mm) with a hole (d=20mm and t=5mm) at a center. The plate is clamped at its edge and subjected to 275KPa uniformly distributed load at the face without the hole.

I want to study the variation of maximum deformation with the  varying depth of the central hole. Any ideas on how I should approach this problem?

I have a question regarding the shape functions. Why the shape function is kept orthogonal to residue in Galerkin method? Looking forward to hearing from you all.

I have a creep strain vs
time graph. How can that be used as input for creep? In defining creep,
abaqus asks for power law multiplier, eq stress order and time order?
how can those be found from creep strain vs time graph?