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Found 7 results

  1. Hello, I am trying to run a Linear Static Analysis of a huge assembly. I have 4 ISO Corners at the bottom. I have 2d meshed it (Simplified Geometry : Quad4 Elements only). When i fix the bottom face only of all the four ISO corners and run my simulation i get unsatisfactory results. By unsatisfactory i mean significantly high stresses and displacements. But when i create a RBE2 on each of the 4 individual ISO Corners (i.e 4 RBE2's) and apply constraint/SPC (All 6-DOFs FIXED) to those 4 RBE2s master node, i get satisfactory results. Could anyone explain why this contrasting results or mismatch?
  2. What is the difference between them in term of slave and master nordes relative movement?
  3. Hi! I wanna model the rotation of a gear (wheel) with a preload in the pinion. I asume the preload is modeled with a moment but, how do I model the rotation? And which analysis type should I choose? (I don't want a quasi-static one). Some analysis don't let me include a LOAD. Thanks in advance!
  4. Hi, I have a problem with my model because i doesnt show any optimization after i ran the calculation.Plus, the solver are empty and its only said that the job is completed. I'm using an Optistruct of my school which connected to the server i guess. Please help me.
  5. Hello, My doubt is about Hinge joint declaration in Optistruct: What is the difference between first and second grid? It has something to do with dependendent and independent nodes? Or the order in which i pick the nodes does not affect? Thank you!
  6. When I run my model, the solver starts to run but hangs up without showing any error or warning, I just get to see the following output: The amount of memory allocated for the run is 1000 MB. This run will use in-core processing in the solver. After this, nothing happens, neither can I kill the run nor abort it or pause it also, I cannot close the window. In the top right corner, it shows, Iteration: 0 Progress: 100% Iteration progress: 0
  7. hello every one , i am new in optistruct , i do some simple anlaysis(linear static) in optistruct , but i ahve issue in above error message , here i attached my .hm file please check it simple_linear.hm
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