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Found 2 results

  1. Hello! I am trying to do Free Shape Optimization of Large Displacement Non-linear Mooney/ODGEN material using EXPDYN and ultimately ELSM for equaivalent static load method as shown using OPTISTRUCT solver. I have setup model for EXPDYN using MAT1 and MATX42 with XSTEP in Sec with TA0=0.0 and DTA = 0.005 and TTERM = 0.05. I have contact surface defines by FRICTION with nu = 0 & 0.3(case-2). But i am getting error of INITIAL PENETRATION. I have seen earlier answers and removed penetration but still error is there. I have tried with TIE contacts as well.(.OUT and .rad file attached), but it is running for hours and no output is generated till. I want to know where i have made wrong. and If you could tell me how ELSM in OPTISTRUCT works? Could anyone please help me? Thanks in advanse...! RubberGasket_Opti_001.out RubberGasket_Opti_002.out RubberGasket_Opti_rad_s1_0000.rad RubberGasket_Opti_rad_s1_0001.rad
  2. Hello, everyone ! Can anyone share some tutorials or examples on nonlinear optimization in which the analysis keyword is NLGEOM, IMPDYN or EXPDYN ? Thank you in advance !
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