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Found 627 results

  1. Hi, I installed the Student version of Hyperwork. I was following HM tutorial (HM-1010: Opening and Saving File). I could import hm file and iges file, but i can't import fem file no matter what template I used. It says "Permission denied" every time I try. Could you let me know what could have been wrong? Thanks
  2. Hi , Need clarification regarding FRF analysis using Optistruct . What is the need of taking PHASE response in the tutorial - OS-T: 1300 Direct Frequency Response Analysis of a Flat Plate ?? Then what is the use of below responses ??/ Regards, Arul
  3. 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?
  4. 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
  5. 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
  6. 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
  7. 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.
  8. 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
  9. 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
  10. Hello. How to control time incrementaton? it doesn't work. i do nonlinear static analysis. 2.out
  11. 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。
  12. 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
  13. 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!
  14. 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
  15. hi facing the above mentioned error while performing linear static analysis.
  17. 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.
  18. 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.
  19. 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?
  20. 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.
  21. 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
  22. 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?
  23. Hello Everyone! I am doing a response spectrum analysis an like to retrieve a eigenvalues and vectors from normal modes analysis which has already done. I hav saved the eigen value using EIGVNAME = modes and EIGVSAVE = 100. The file is has saved as modes.100.eigv. While doing RSPEC, I retreived the eigv using EIGVRETRIEVE = 100 and same EIGVNAME. But Solving throws an error as, *** ERROR # 372 *** Number of MPC constraints in file modes.100.eigv 474 does not match current value 0. Can Someone figure it out . Thanks in Advance -RathinaVel
  24. Hello, I would like to perform a modal analysis of a helicopter blade while it is rotating at a constant RPM. I have created two steps in hyper-mesh, first is a linear static with boundary conditions and applied a centrifugal force with the RFORCE card. Second step is a normal modes step with the previous step linked through the STATSUB card and no boundary conditions or forces selected (free-free) modal analysis. Whenever i run this, the first step works, however i get an error: *** ERROR # 15 *** CTETRA element 252760 is distorted (zero or negative Jacobian). I checked my mesh and i have no issues with the Jacobian or mesh at those indicated elements. As a check, i've run both steps separately and both work and give good results. I don't know if this is the right way to perform such an analysis where the blade stiffness is changed by the centrifugal loading due to rotation. Your help is appreciated. Kind Regards, Mohamed FinalModel_01-12-2016_Finalzed_model_Pre_stressed_modal.hm
  25. Happy Monday, Dear all, If we have "part" and then we would like to know, how strong it is (let say, I would like to know, in load .... Newton it would be broken). Is it possible? whether in radioss or optistruct. If you have a tutorial or ever do the project like what I mean above please share "the know how". Thank you. Regards, Iron_Man
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