# migid

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Beginner

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• Country
Germany
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1. ## Composite Pressure Vessel Matrix Damage

Hello, I am optimizing a Composite pressure vessel with a simple model. I am using a cylinder with a PLOAD4 radial Pressure and a force on the axial direction (see Picture). The Cylinder is build up with SHELL Elements. The damage criterion is Puck. At every simulations occurs a matrix damage (mode A) in the laminate, which I think is false. Is it possible that Composite pressure vessels has a Matrix Damage under load? Do I use false Model definitions? Thank you for your help. Tube_Test_100_mat2.fem
2. ## Plasticity Law

Hello, I am working with the material law Orthotropic Damage and plasticity, where the shared evolution Law is is defines as it shown below. What is the meaning of the Parameters K_inf, K_0 and H'? Arent they Materialparameters? If yes, why I should not define them in the Modell, how are they calculated? Thank you for your answer

4. ## Viewing .h3d after stopping the the calculations

Hello! At some calculations I am able to see the results in the h3d file. I dont have to wait until the calculations are finnisched. Which ist ist Keyword, which with I can control it? Thank you for your help! Best regards.
5. ## Composite Using Solid Elements

Hi Ivan, thank you for your answer. I had a false paramter in my Control Card. Regards, David
6. ## Composite Using Solid Elements

Hi, I built up a Tension analysis wit a coupon speciment. Material: LAW12 Property: P6_SOL_ORTH I want to set up the materialorientation. I tried to assign the nodes to a coordynatesystem, which is rotated by 45 grad and tried to set the parameter "Psi" on 45 Degree, but neither of them worked. Can you please help me by building up a laminate? ##-------------------------------------------------------------------------------------------------- ## Orthotropic Solid Property Set (pid 6) ##-------------------------------------------------------------------------------------------------- /PROP/SOL_ORTH/1 solids 17 2 3 2 1 45.0
7. ## Drape Estimator - How to export !?

Hi, could somebody found a solution on this Topic? Thank you for your answer. David

Thank you!
9. ## Auto-Contact Missing

Hi @Prakash Pagadala Thank you for the quick answer, I found it. Somehow, I missed the toggle options "Elems". My second question would be, that the Name of the contact surface get a "Csurf_" part in his name automatically, which was not make by the older Method(Tool-> Auto Contact) of Creating Contactsurface before. I dont know if it does any differences or not. I marked it, on the picture. The last to Contactsurfaces were made by the new Method (Contact Tool->AutoContact), the others were made by the old method. It does not mean any differences I think, or do?
10. ## Auto-Contact Missing

Hi, Thank You for your answer! I found it, but I cant modify the choosenelements az the Contact surface, as I could before. I want to modify my Master and my Slave surfaces, but I can only pick them by Contactsurface entity. Furthermore I choose the entity type: Surfaces, and it adds, an other nameformat for the Contactsurface then the other version of Auto-Contact. I marked the different names. Does it matter? Arent they the same?
11. ## Auto-Contact Missing

Hi, I have a problem by making an Auto-Contact in Hypermesh. Somehow the Auto-Contact function is missing under Tools. It should be at "Pretension Manager", but I can't find. I tried to refresh my User Profile to Optistruct, but it didnt help. Thank you for the answers!
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