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Rahul R

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  1. Livil Lyle liked a post in a topic by Rahul R in Getting two stress values for a single node   
    If the node is common among different parts and you get an average value by part.If you select the option in contour panel average across component boundaries you will get one single value then you will just need to check the remove duplicates in the query panel.
  2. durukanbdilek liked a post in a topic by Rahul R in vibration model for fea   
    I see some modelling issues in above shared model..I believe this you corrected and shared in below post.
    https://forum.altair.com/topic/37782-h3d-error/
  3. durukanbdilek liked a post in a topic by Rahul R in Hyperelastic Materials   
    If you are using Student edition, then you may not be able to use the point release. Please check the details below for the research license.
    https://altairuniversity.com/researcher/success-is-the-ability/
  4. durukanbdilek liked a post in a topic by Rahul R in Hyperelastic Materials   
    Use MATHE card.PFA screenshot for same.

  5. durukanbdilek liked a post in a topic by Rahul R in Hyperelastic Materials   
    Either the PSOLID or PLSOLID Bulk Data Entry can be used to reference the MATHE Bulk Data Entry. 
  6. durukanbdilek liked a post in a topic by Rahul R in Hyperelastic Materials   
    Defines the properties of nonlinear hyperelastic solidelements, referenced by CHEXA, CPENTA, and CTETRA Bulk Data Entries. The MATHE hyperelasticmaterial can be referenced to define corresponding material properties.
  7. durukanbdilek liked a post in a topic by Rahul R in Hyperelastic Materials   
    Currently shell and membrane for MATHE is not supported.PFA highlights of OptiStruct 2019.1.

  8. durukanbdilek liked a post in a topic by Rahul R in Hyperelastic Materials   
    As mentioned above this is available with OptiStruct 2019.1 version.
    In OptiStruct the MATVE bulk data entry defines the material properties for Viscoelastic materials.
    MATVE is only supported for Small displacement nonlinear static and transient analysis.& Solid elements both first and second order (CHEXA,CTETRA,CPENTA,CPYRA) are currently supported.Let me know if you need the demo file for same.
  9. durukanbdilek liked a post in a topic by Rahul R in Hyperelastic Materials   
    If you are a commercial customer then please upgrade to HW Desktop 2019.1 (hotfix is 2019.1.1)and for solvers OptiStruct 2019.1 (hotfix is 2019.1.1)
  10. durukanbdilek liked a post in a topic by Rahul R in Qvol/Qbody depend on Node temperature in Heat Transfer Transient   
    Time varying convection
    Convection coefficients can be specified as time-dependent when a control node (CNTRLND) is specified on CONV card. The control node must be constrained by an SPCD, which is made time dependent by TLOAD1/TLOAD2. The convection coefficient is multiplied by the value from SPCD of control node.
  11. xrek liked a post in a topic by Rahul R in gravity   
    If you have access to 14.0.Explore ACCEL card in Optistruct. See attached screenshot.HM-OS yet to support this card .Try checking using unsupported cards.

  12. Rex liked a post in a topic by Rahul R in PSD analysis   
    You can refer to below Altair Resource Library with keyword as random.
    https://altairhyperworks.com/ResourceLibrary.aspx?keywords=random
  13. Rahul R liked a post in a topic by Santhoshkumar in Skew quality in Volume mesh   
    Hi, 
     
    Go to File > Preferences > Application and turn on "Enable CFD modelling" toggle. This will automatically set the skew as a default quality in volume mesh dialog. 
     
    Please try this and let me know if you have any difficulty. 
  14. Rahul R liked a post in a topic by Santhoshkumar in Simlab always Delete all BC & Constraints when create new solutions   
    Hi, 
     
    Solution creation is a new approach and a easy way of creating the solution. Loads and constraints browser is the classic approach where the loads will be listed. To avoid the conflict between both the browser, we thought of deleting the loads in loads and constraints browser before creating the solution. 
     
    In upcoming versions, we may remove the loads and constraints browser. Then, this confusion will be avoided. 
     
    In your case, if the loads are already present in the loads and constraints browser, then go to File > Export > Silver input file option and select the solver and solve the problem. 
     
     
  15. Rahul R liked a post in a topic by Santhoshkumar in Simlab always Delete all BC & Constraints when create new solutions   
    Yes.... Your understanding is correct. Create solution first and then apply loads and constraints. 
     
    Solution approach is very easy to use and can perform multi physics  simulation.
     
    Feel free to contact me if you have any doubts in solution creation.
  16. oguzhan liked a post in a topic by Rahul R in Composite: Linear static analysis - Tutorials & Tipps?   
    As per the message mentioned in status bar this import needs separate licence or try importing in other cad format.
  17. bijubalancollins liked a post in a topic by Rahul R in Radiation heat transfer modelling in Optistruct   
    Thermal simulation is only available with RADIOSS explicit.
  18. bijubalancollins liked a post in a topic by Rahul R in Radiation heat transfer modelling in Optistruct   
    Radiation heat transfer is not yet supported in OptiStruct.You could check for Altair Radioss & Altair AcuSolve for such cases.
  19. Rahul R liked a post in a topic by PrasannaK in Get count of materials   
    Hi Ajinkya,
     
    You can use the following command to return count of material:
     
    *createmark materials 1 all
    hm_marklength materials 1
     
    Thank you
  20. Rahul R liked a post in a topic by sandeepballiwar in Get count of materials   
    You can use the following command to get total count of materials in model
     
    hm_count materials all 0 0
     
     
  21. Rahul R liked a post in a topic by AltairEnginyaaring in Small script for Life contour   
    Hi
     
    I uploaded a small script for HyperLife.
    If you want to use this, download from follow link.
     
    Images and How to use are around end of the blog post.
    https://web.altair.com/altairjapanblog/hyperlife-resultview
     
     
  22. francesca liked a post in a topic by Rahul R in Optistruct_Free Size Optimization_Warnings   
    Compliance is negative or large, generally this warning comes for modelling error.In your shared file, i see you meshed some 3d enclosed voulme section with 2d mesh/penetraion because of overlap of thickness.
  23. Rahul R liked a post in a topic by Joel Rodarte in How is VonMises strain output in hyperview calculated by Optistruct?   
    This was what I was searching for!
     
    Thank you Farouk!
  24. tinh liked a post in a topic by Rahul R in Topological Optimization - Preserve stress distribution at interface   
    All Optimization disciplines using nonlinear solution with contact only has been supported in OS for a long time.In V2018, nonlinear responses have been added.Contact pressure and contact force from both S2S and N2S contacts can now be used as a response (DRESP1) in optimization formulation. Refer attached model for contact pressure response for shape optimization. Use latest version and refer online help for detailed information.
    80_Contpres_model.fem
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