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Found 669 results

  1. Hi, I'm getting following error from Optistruct. Kindly help. I have already updated my system with Hyperworks 14.0.130/hotfix 14.0.131 and Hwsolvers 14.0.230/hotfix 231.
  2. hello im triying to do a topography optimizaiton using ERP as a response, and a minmax objective. when i try to solve it i got the following error: *** ERROR # 2148 *** Invalid design problem. All the sensitivities of response 1 (objective) are zero.
  3. Hello all, I'm trying to carry out an optimzation with optistruct with applied forces and displacement contraints but come across error 318. The attached images show the BCs desired and my settings for the SPCs. During the Analysis step, the process completes without any error but the optimization step returns following error: *** ERROR # 318 *** Static load case 1 has nonzero applied loads & prescribed displacements. Optimization with compliance cannot be performed. Somebody who can guide me about this issue? Thanks for your help, suggestions as well as advice! regards.
  4. A fatal error has been detected during input processing: *** ERROR # 762 *** The PID given in OBST of DTPL is already defined as a topological design property. DTPL id = 1 violated property id = 4
  5. Hi, I am trying to learn fatigue using optistruct , Please share me with the videos and fem files regarding fatigue. I already went through the fatigue tutorials in optistruct If I put all of the fatload into one fatevnt, are they now occurring simultaneously? How do I change the model that the loads occurs one after each other? Thankyou N.K
  6. Hı everyone, I want the part of the model to contain a completely lattice structure. But my model are empty places. Could you help me?
  7. Hi all, Am trying to find a line of code which will select a component / assembly / set etc, when the name contains a certain string... for instance the assembly name may read "apples-001001a" but I want a script to select that assembly if the name contains "apples" as the number could change in the future. Any ideas? Cheers Andy
  8. Hı I am trying lattice structure optimizatons. Actually I can do it. I want to change lattice types such as 1,2,3,4 and than results compare but I dont have any difference. If you know solution for this problem,can you help me? Thank you
  9. Hello, I am new to Altair Hyperworks and am trying to run the tutorials for the Fatigue process. I have watched a couple videos on the process and then I went to run the same tutorial myself and I get this error when I run hyperworks>tools>fatigue process>new I was wondering if there is an installation guide for creating this file/directory because I can not seem to find it in the documentations. Thank you, Morgan
  10. Hi. I am new to this software and i got an error which read: *** ERROR # 1000 *** in the input data: Incorrect data in field # 4. The element in question is a CTRIA element.
  11. i want to run the Optistruct solver and it shows this. i send the .out file .what should i do to solve this problem? thanks for the help:) EX18TOPOLOGY.out EX18TOPOLOGY.stat
  12. Hi All, Is there any failure models available in Optistruct for implicit nonlinear analysis? I need to remove the elements once uts is reached / strain value reached ? Thank you N.K
  13. Hello. How to control time incrementaton? it doesn't work. i do nonlinear static analysis. 2.out
  14. 複合材パイプを3点曲げにて積層構成を最適化しようとしています。 Objectiveにコンプライアンス最小化を選択しました。 Composite ShuffleのIteration回数は30回でしたが、変位結果グラフを見ると30回目の計算結果よりも良いものがあるように見えます。(Iteration2やIteration12など) 1.計算回数の打ち切りはどのように決定されているのでしょうか? 2.最後の計算結果が最良のもとは限らないのでしょうか? 3.Iteration毎の結果をジオメトリ上で確認できる方法はありますか?(三枚目の写真は Iteration 0で寸法最適化のまま) よろしくお願いいたします。
  15. hello, I am working on model of pressure plate which have axis offset. A shaft passes through it. when pressure applied (in x-y) on the pressure plate due to the offset one side of pressure plate will have more pressure. Which causes rotation on around z axis. As the shaft passes through z-axis. Shaft and pressure plate are in contact.. As pressure plate will rotate it will tend to rotate the shaft. I want to find out for particular pressure how munch is torque is generated. i want to get torque as output when pressure is applied. how to get torque as direct output
  16. Hi, I'm trying to run a fatigue analysis using acceleration as load, but I don't know how to set the FATLOAD card with an acceleration load. My objective is to simulate a shacker test and verify the life and damage that the part will get when vibrates in 1G acceleration. Modal and frequency response analysis are ok, my only problem is with the fatigue analysis. If anyone knows how to proceed, please let me know. Thanks!
  17. Hi there, I've run a simulation of the chassis of a car through Optistruct in Hyperview, and there were no errors and everything seemed to run well. However, upon loading into Hyperview, I am unable to view the contour plots for stress/strain/displacement and the four subcases. I am expecting to get a model like Image 1, however am getting image 2. It is as if there are no loads applied to the chassis. If anyone is able to view the model (file attached) and perhaps indicate where I am going wrong it would be greatly appreciated. Cheers Chassis_scaled_newI.hm
  18. hi facing the above mentioned error while performing linear static analysis.
  20. Hi, I would perform an Impact Hammer Test on a panel and plot acceleration in some points of that. I don't know if i'm right following the frequency response tutorial (i'm not sure if use modal or direct method), so i have 2 question: 1. How can i model (if possible) the load as an impulse? 2. I have the damping loss factor function the frequency of the material. How can I input this on the model? Thanks for answering.
  21. Dear all: I have a model with plenty of elements (4,383,225) in OptiStruct for modal analysis. And I got the following error, would you please help on how to solve this problem? Thank you for your help. *** ERROR # 2005 *** WIN_IO: WriteFile failed. (112). **************** Too many error messages. Aborting run. Current limit is 10000. Use "MSGLMT" control card to change this value.
  22. Hello, I'm importing a .hm file to the HyperStydy which is a composite model. But I'm not able to import variable other than Material and Moment. Can you point out where I might be going wrong?
  23. Hi i have got the following error. I had run FRF on the same model (large) previous week for same frequency range. It was fine. This week for another FRF analysis for the same frequency this is showing this error. Please help *** ERROR # 2782 *** 32bit integer overflow occurred in reduced order model processing. This is usually because of the higer than default value of AMPFFACT used in analysis. If not, it is simply due to too many eigenvalues located in the requested frequency range. Reducing the upper frequency bound in EIGRA card is likely to make AMSES go through. This issue will be resolved in later version.
  24. Hi, I have tried the Coupled Linear Heat Transfer/Structure Analysis tutorial. I got exact values for flux and temperature results from subcase1. But the results for static subcase2 where I have referenced the temp (load from case 1) does not match with the tutorial results. File attached for reference, Please help me solving the issue pipe.fem pipe.out pipe.h3d
  25. I have a model that runs static analysis in Radioss, which is now required for Acoustic analysis. How do I transfer my model from Radioss-2017 to Optistruct-2017 without disturbing the card images and control card data?
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