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Hi everybody

Im working on a project about Finite element modeling of Contact. Im not allowed to use contact solving feature of ANSYS and i should use its Macro Programming. in this case i should read stiffness matrix from ansys, add some row and column to it and input it back to ansys and solve it.

I have two problem with this, first i dont know how to input modiffied stiffness matrix back to ANSYS..

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MicrosoftInternetExplorer4

Hi

I want to impose SS-F-SS-F or F-F-F-F for boundary condition of rectangular plate with element free galerkin method and with

ortogonal transform method(G.R Liu and chen 2001) for imposing B.c. 

How can I do that?

for F-F-F-F how can I impose B.c? when I do nothing for imposing B.c ,I will have 3 extra natural frequency

the first complex and second and third near zero. how can I solve this problem

thanks

vielen dank

Ali 

Would like to hear your expertise/user/non-expert/sceptic comments on XFEM. Here are some of the challenges. Would like to hear your relections.

1. Can XFEM be utilized in characterizing Failure rather than Fracture?

2. What sort of challenges XFEM still have with respect to Fracture Mechanics?

3. How the Fracture mechanics benefit the industry, from the perspective of strcutural integrity?

4. Failue investigations vs. Fracture investigations: benefit to industry?

5. Academist vs Engineer: Perspective on XFEM