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xrek

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About xrek

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    Greece
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    Yes
  1. @Hyperman ty very much for your response. For a quasi static simulation with an explicit solver it is required mass increase but the balance is fragile between the added mass the solution time and the time step. But if mat 37 is not suited for such an application I probably move the analysis to optisturct acusolve coupling for a DC-DFI. Thx again
  2. Hi luclore which failure model did u use? thx
  3. Hello, I am trying to perform a quasi-static simulation using radioss. The initial model entailing solely hyper-elastic materials is working fine. Now I replaced a material type 42 with material type 37 that is a bi-phase material. My problem is that when enabling a mass scaling through /DT/NODA/CST in order to reduce the kinetic energy of the model and perform a quasistatic analysis, the model doesn't follow the requested time step. And then the solver stops due to negative volumes. Is there a way perform a quasistatic FSI with radioss? If so which are the appropriate values for MAT37? Is it better to choose a different material? or it isn't possible to perform such an analysis and thus move it to acusolve. Here is my .hm file Quasistatic_indentation_fluid.hm
  4. Good evening guys, I am trying to model a composite structure with delamination capabilities by using Prop/type17. Even though I am reading that it entails the capabilities of plyxfem and to determine interply material by the flag Mint_IDi . Those two flags are not visible. Does anyone has faced the same problem? Is there a chance that are not visible by my model setut of they should have been visible by default. I am attaching the respective file. Thx. plate_impactor_rigid_delamination.hm
  5. Hi guys and how is the connection between the faces and the "connection elements" (MAT59) is achieved? arent we suppose to enforce a contact between them? and the this material law is combined with lad_dama failure? Thx
  6. Good evening, was there any progress on ply xfem? are there any tutorials, examples available? ty
  7. Hi Rahul can repost the pdf plz? Chris
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