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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. 


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  1. Failure criteria

    Hey, I am modeling in optistruct a spring that is made out of steel: Material: mat1 with mats1. yield point is 355 Mpa and UTS is 490 Mpa (elongation is 22%) Property: PSOLID Load Step: Non-Linear transit analysis (Type DTRAN) When i run the analysis i get good results compered to tensile test we have done on the spring. The thing is that when i review the results i see that their are elements that exceeded the plastic strain limit (22%) or UTS stress limit but no failure/damage/disruption has occurred. Is there any criteria that i need to input that will take in consideration the failure of the specific elements? Thanks, Ori