ANSYS拓扑优化
给大家贴一个用ANSYS做拓扑优化的例子/TITLE, 2-D Two-Story reinforcement problem- Maximize fundamental frequency A=0.25 ! Prepare ModelB=5C=0.375D=8E=3.75/PREP7K,1 K,2,CK,3,C+A K,4,B/2 K,5,,E K,6,C,EK,7,C+A,EK,8,B/2,EKSEL,S,,,5,8KGEN,2,ALL,,,,AKSEL,S,,,9,12KGEN,2,ALL,,,,EKSEL,S,,,13,16KGEN,2,ALL,,,,AALLSELA,1,2,6,5A,5,6,10,9A,9,10,14,13A,13,14,18,17A,2,3,7,6A,6,7,11,10A,10,11,15,14A,14,15,19,18A,3,4,8,7A,7,8,12,11A,11,12,16,15A,15,16,20,19 ET,1,82 ! Define two element typeregionsET,2,82 ! 1 - optimized regionASEL,S,,,4,8 ! 2 - non-optimized regionASEL,A,,,10,12,2TYPE,2ESIZE,0.1AMESH,ALLASEL,INVETYPE,1AMESH,ALLALLSELMP,EX,1,100 ! Material of structureMP,NUXY,1,0.3 MP,DENS,1,1.0D-6MP,EX,2,100 ! Material of concentrated massesMP,NUXY,2,0.3 MP,DENS,2,5.0D-6 ASEL,S,,,6,8,2ESLA,S,1EMODIF,ALL,MAT,2 ! Define concentrated massesALLSELLOCAL,11,0,2.5ARSYM,X,ALL ! Full modelNUMM,KPNUMM,ELEMNUMM,NODELSEL,S,,,14LSEL,A,,,45NSLL,S,1D,ALL,ALLALLSELFINISHTOFREQ,FREQ1,SING,1 ! Define single frequency function (1st) TOVAR,FREQ1,OBJ ! Define objective for topologicaloptimizationTOVAR,VOLUME,CON, ,14,ACTUAL ! Definevolume constraint (upper bound = 14)TOTYPE,SCP ! Select SCP solutionapproach TODEF,0.00001, ! Initialize topologicaloptimization process, accuracy =0.00001TOLOOP,40,1 ! Perform up to 40 iterationsFINISHTOPLOT,1 ! Plot finalpseudo-densities TOGRAPH,OBJ ! Graph final objective (1stfrequency) historyTOGRAPH,CON ! Graph final constraint(volume) history
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