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thanks for your tips. I will look into this. I knowit will take quite some time for me to fully get something going. hope for the best.

I think ansys fatigue module only has Miner's rule type linear damage rule. How can I include a custom damage rule in ansys fatigue model? Can I do it by APDL ? if yes, how?

I looked at nonlinear spring elements in ansys. like combin 39. It requires coincident nodes. Now if I make a spring element at coincident nodes of support and plate, then how do I enforce that the support is grounded. I mean it does not go downward. I did a trial run but seems like the spring...

rb1957, many thanks for nicely clarifying the sym and anti-sym conditions. That was really helpful. May I ask another question?? How can I model situation like this: a plate sitting on four beams(I-beam) or supports on all 4 edges. I tried to couple(or constraint adjacent region) uz(vertical)...

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thanks for all your advice. So I learnt that I can't do symmetry model unless both geometry and load are symmetric. Now, what that anti-symmetric condition mean exactly ? Does it mean that the structure is geometrical symmetric but load is not? Like a plate where quarter of the plate is...

Hi, I have a model which geometrical symmetric but load is not symmetric. Can I use symmetry boundary condition? I am talking about planar symmetry not axisymmetry. For eaxmple, a reactangualr plate area which is symmetric about its midplane. So I can model quarter of it and apply symmetry...

Hi cnrn, thanks for your reply. I will have to try to shell elements. Only thing is that to match up with the other part sitting on top of the I-beam, I will have to do a fine mech on the beam. This eats up memory. I am trying constraint equations/coupling to resolve this too. But still all...

Thanks for your replies. I know I can do solid or shell model of the beams to get the local effects like the flange distortions. But that would eat up resources. Thats why i wanted to try beam elements first. ANSYS beam 188/189 elements are only first order shear deformable and I will not get...

Hi, I wanted to model beam where cross-sectional distorsion is allowed. For example, top flange of an I-beam (W14x34)deforms. I have tried Beam 189. But it is timoshenko beam with shear stress constant through the tickness. That means plane section remains plane. I don't want that. For my...

Hi, I am trying to model a situation where load being applied to a flat surface through a soft rubber like loading patch(curved surface).I was using displacement control for contact analysis and tried many things so far with no luck. Here is the problem description for you all...