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Found 4 results

  1. Hi there. I hope someone will help me finish my model. I am analyzing a beam that will move the entire wind tunnel support jacket. See first picture. This beam is placed on top of the SPMT truck. See second picture. My question is: A. How to I model the contact between the top of the long beam and bottom of the bracket (second picture denoted as A). I am getting an error "Undefined SET SSID on CONTACT 1" but I already defined it. I don't know what am I missing. B. The boundary condition will be placed at the wood locations. This will be in compression only condition. How do I model that? I am attaching my model (only half have been modeled yet). JDN_Loading_Beam_Rev_A.hm
  2. Hey Guys! I have experimental data for composite tension compression and bending (3-point and 4-point) due to my university and I want to make a material card that can describe all of the mentioned test (and behavior) with proper accuracy. I would like to make tension, compression and bending (3-point and 4-point) test in Optistruct but I haven't make coupon test before. In the real tests the loads (movement of the clamping jaws) move at constant velocity. I have no experiment how to model such kind of load in Optistruct. I think there should be some non-linearity in the test because of the large displacement. How should I properly model such kind of problem? Do you have any experiment in modeling with velocity load in Optistruct? A further problem will be the bending tests where I think I should use contact surface to model the geometry of the bending machine tool's head. In Optistruct I used slide contact before, but it didn't work to well because of large displacement. Is it possible the handle open gap contact and make the 3-point/4-point bending in Optistruct? If you have any model for bending and tension and compression could you share with me? I would like to study the pre-process method to understand the nature of the coupon test in Optistruct. Thank you for your help and advise in advance! Best regards, Tüki
  3. HI all, I am an ABAQUS user and a newbie to Optistruct. I am simulating a simple spring compression simulation and have a few queries. 1) What is the element type to be assigned for the 2D - rigid plate to be used ? 2) In ABAQUS, no material property definition is needed for rigid. Is it the same in Optistruct ? 3) For the spring, I have used CPENTA for penta6 and CHEXA for hex8 elements. Is it correct ? 4) What is the equivalent to R3D4 of ABAQUS in Optistruct? Thanks in advance for your help.
  4. Hi everyone, I have a question regarding the boundary conditions. Is it possible to define translational boundary conditions which only act in one direction? So for example only in the positive X-direction and not in the negative X-direction. So that these regions can only transfer compression and separates if put under tension. This means that the reaction force can only work in the direction of the object and not in the opposite direction. Is this somehow possible? Regards, Mike
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