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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. 

Prakash Pagadala

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About Prakash Pagadala

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  1. [GNA] Post-Buckling of arch plate in Optistruct

    Hi @ahenkes1 Sorry that I couldn't able to reply due to long weekend At my end Transient NL run fails with convergence issues at exactly 95% load. I would be interested in looking at your model
  2. linear static with contacts

    Hi Rahul, Thank you for the update
  3. Tsai-Wu failure criteria, strength ratio

    Hi, Sorry for a late reply. I could not able to find a way in OptiStruct which provides the maximum load required. But you can multiply the applied load with strength ratio which provides maximum load to failure (which should make SR= 1 and FI =1)
  4. Tsai-Wu failure criteria, strength ratio

    Hi, OK, I understood. You want to know the failure load where failure occurs. I will check and will let you know soon.
  5. Tsai-Wu failure criteria, strength ratio

    Hi, Failure index less than 1 indicates that failure of composite is not taken place. But it is also good to look at Strength ratio as failure index is not a linear function.
  6. How to apply force over time in different level

    Hi @mohammad Try with Transient analysis type in OptiStruct
  7. Hi @Branden Little Goto Control cards>> OUTPUT>>SHRES>> <Options> You have different options like first, last, ALL, N. N is the number of iteration, ALL will output .sh file for all iterations
  8. Linear Static Analysis - Gear Strength

    Hi @JamesMech Here are few suggestions from one of our experts: 1) Refine the mesh and make sure you apply the force on entire top face of the gear 2) Atleast 4-5 layers of elements along the thickness of the tooth to capture proper stress 3) If the displacements are huge, try with NLSTAT
  9. Tsai-Wu failure criteria, strength ratio

    Hi @Tüki You can output Strength ratio using PARAM>>SRCOMPS which is available in Analysis page>> Control cards.
  10. Total strain energy of a part

    Hi, Make sure you have scripting toolbar active. Please see the attached video on how to use the script. sum_average_contour.swf
  11. Hi @Branden Little Did you try to change the ISo value on OSSmooth? By changing the threshold (iso) value on OSSmooth, the topology changes. Please try this and let us know if this helps.
  12. [GNA] Post-Buckling of arch plate in Optistruct

    I will update my iteration results soon.
  13. Tie contact

    Tie contact as a boundary condition and the condition with shell and solid is that the translational dof reduce to rotational dof. So there should be no problem.
  14. fabric hinge

    fyi, NLELAST is not supported for shell elements in NLGEOM.
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