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    • Rahul Ponginan

      Please click here for a short but important announcement   03/26/17

      Dear Users Our Commercial and Academic users around the world can use these same forums here as before i.e. the Altair Support Forum , Commercial users from India with solver queries can go to the Solver Forum for India Commercial Users , Academic Users from India and AOC India Participants are requested to go to the Forum for India Academic Users and AOC India Participants , We will be tending to all queries in all the forums promptly as before, thank you for your understanding. 
    • Rahul Ponginan

      ユーザーフォーラムについて   10/22/17

      アルテアエンジニアリングでは、弊社製品や技術について、ユーザー様同士がオンラインで情報交換できる場所を提供しています。 日常業務の中で起こるさまざまな問題の解決や、他ユーザー様との技術交流を図るための場として、お客様の環境に合わせてご活用ください。

Prakash Pagadala

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Everything posted by Prakash Pagadala

  1. Composite size optimization / Composite failure

    Mike, What you did is not wrong. But apart from that you need to defines plies as design variables. Right now what you have is plies and laminate which is a ply based model and it is perfectly fine.
  2. Composite size optimization / Composite failure

    Hi Mike, I see you have created Design variable for laminate and not for plys. Goto Size panel in optimization page and create design variables for plys and try again
  3. Error in NLSTAT Analysis of Gasket Materials

    Hi Arul, Try this file. Curve is not defined in increasing order in one of the tables. ref2.fem
  4. Composite size optimization / Composite failure

    Mike, Can you share the model file using Filetransfer link in my signature?
  5. Composite size optimization / Composite failure

    Hi Mike, DId you change the analysis option in OptiStruct panel to Optimization? If possible, can you share the .out file?
  6. Composite size optimization / Composite failure

    Hi, You can specify failure criteria in PCOMPP>>FT. You will see a selection menu where different failure criteria are listed. Select your choice and try.
  7. Error in NLSTAT Analysis of Gasket Materials

    Hi Arul, Try this model gasket_model.fem
  8. Error in Transient Heat Transfer analysis

    Hi, Can you share the .out file please?
  9. Kamalakarrao

    Hi Kamalakar, Did you try providing motion using curve?
  10. Press Fit Simulation in Optistruct

    Hi @mvass I see that the contact pressure at surface is way far from close compared to stress. I am going to discuss with experts and I will get back to you soon.
  11. Stress results in cylindrical coordinate system

    Hi Soraya, You can assign the system using Systems>> Assign>> Nodes/loads.
  12. Press Fit Simulation in Optistruct

    Hi Mvass, Did you use CONTF>> PCONT? This should output contact pressure. It would be great if you share the model and results.
  13. Converting shell elements to solids

    @Vol7age If you want to include a ply with solid elements in laminate with STACK card, no it is not possible. You can create two laminates on top and bottom faces of the solid component so that you can include solid ply in between the laminates.
  14. Error in Transient Heat Transfer analysis

    I am not sure about the model. If you can share the model file, I can check and let you know.
  15. Error in NLSTAT Analysis of Gasket Materials

    Hi Arul, Leave YPRS blank and try again.
  16. Composite size optimization / Composite failure

    Hi Mike, For 1st question, can you if Optimization is turned ON in OptiStruct panel under run options (see the image)? For 2nd question, please check whether failure criteria is provided in property card or not. A valid failure criteria is necessary to calculate failure index and strength ratios like TSAIWU, etc...
  17. Error in NLSTAT Analysis of Gasket Materials

    Hi @Arul Can you share a screenshot of MGASK material card?
  18. Error in Transient Heat Transfer analysis

    @Nachiket Kadu Glad the problem is solved. It maybe because the RBE3 is constrained or some other issue with RBE3
  19. Geo nonlinear (Implicit dynamic)

    karthik, For Implicit static general Newark method is used where Mass and damping are omtted (K*DeltaU= P) but for implicit dynamic an extension of Newark method Alpha-HHT (Huges, Hibler and Taylor) is used. It allows for effective algorithmic damping of high-frequency spurious vibrations.
  20. Error in Transient Heat Transfer analysis

    @Nachiket Kadu Did you constrain the RBE3 by any chance?
  21. Error in Transient Heat Transfer analysis

    Hi, Could you please check the following: 1. The constraints applied on the rigid elements. Please check the dofs. 2. Check if there free 1Ds in your model through the Check elems panel in Tools page. 3. If you have any beam spiders, please change them to RBE2 elements and having a beam element connecting the independent nodes of spider.
  22. Geo nonlinear (Implicit dynamic)

    Hi karthik, Please read my previous reply where it states that NLSTAT ignores inertia and mass effects.
  23. Non linear Transient Analysis

    Hi Karthik, Right now I can't get the integration scheme but all I can say if you have observed we are coupling transient Dynamic and non linear where large displacements are involved.
  24. Error #1000, found blank

    Hi Eric, You can translate the component. Use Shift+F4 to translate the component
  25. Dynamic analysis

    Hi @Mahantesh Please refer to the tutorials shown in image below:
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