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Found 4 results

  1. Dear Altair support team, Mr. Rahul R., I am working on optimization the vehicle crash box, I have some question about Hyperstudy / Hypermorph coupling for shape optimization. As first figure below, I created 2 Shapes (yellow and green) by translating the handles in -X,+X direction to increase the taper angle. In HyperStudy, I defined the model type as HyperMesh, while I am importing input variables from HyperMesh, they ask me to identify the lower and upper bound once (as second figure below). In this study, I would like to have the design variables including crash box thickness, shape1 and shape 2. Question 1. I seperated the shape into 2 because I have no idear to handle with them, can there cause any problem further? 2. If I want to keep the handle distance (+10,-10 in x direction) which is defined in the HyperMesh, Should I set up the input variables as following? Variable 1 (dv_1) Lower= 0, Nominal = 0, Upper = 10 Variable 2 (dv_2) Lower= 0, Nominal = 0, Upper = -10 Are there correct? Thank you for your calification. Best regards, Wisawanart
  2. Hi I have a concept that I will manufacture the crashbox by using stamping simulation (Hyperform) and then I may get the residual stress results. For my crashbox, how can I map the residual stress into my model during preprocessing. (How many ways that can be used ? ) If you have some tutorials about this kind of problem please share me and also I need your valuable suggestion. Best regards Nut
  3. Hello, I have been confusing about the lumped mass setting on crash analysis, which way is the best for representing the entire weight of the vehicle. For my questtions, 1. What should I set for the ICOG card ? normally, I tried with 1 or 3 but I didn't know the exactly definition yet. 2. What is the most suitable cases to set the number of node for RBE? I should select only the nodes at the edge or more ? (the green one ,as a figure below) 3. Generally, I define the inertia mass in RBE2 using card edit directly, but it also has ADMAS manager which will add the mass into the node instead. What is the best way to deal with it? Best regard
  4. Dear George Sir, Thank you for the crash analysis part to do. I have tried this 3 wheeler motorbike crash box analysis. after the run when i did post process the box pass through the wall instead of hitting. i don't know what is the reason. I am attaching the file. please check and let me know the correction. Best regards, Dani crash_box_meshed.h3d crash_box_meshed_0000.rad
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