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 Model

B=5

C=0.375

D=8

E=3.75

/PREP7

K,1

K,2,C  

K,3,C+A

K,4,B/2

K,5,,E

K,6,C,E

K,7,C+A,E

K,8,B/2,E

KSEL,S,,,5,8

KGEN,2,ALL,,,,A

KSEL,S,,,9,12

KGEN,2,ALL,,,,E

KSEL,S,,,13,16

KGEN,2,ALL,,,,A

ALLSEL

A,1,2,6,5

A,5,6,10,9

A,9,10,14,13

A,13,14,18,17

A,2,3,7,6

A,6,7,11,10

A,10,11,15,14

A,14,15,19,18

A,3,4,8,7

A,7,8,12,11

A,11,12,16,15

A,15,16,20,19

ET,1,82                 ! Define two element typeregions

ET,2,82                 ! 1 - optimized region

ASEL,S,,,4,8            ! 2 - non-optimized region

ASEL,A,,,10,12,2

TYPE,2

ESIZE,0.1  

AMESH,ALL

ASEL,INVE

TYPE,1

AMESH,ALL

ALLSEL

MP,EX,1,100             ! Material of structure

MP,NUXY,1,0.3   

MP,DENS,1,1.0D-6

MP,EX,2,100             ! Material of concentrated masses

MP,NUXY,2,0.3   

MP,DENS,2,5.0D-6

ASEL,S,,,6,8,2

ESLA,S,1

EMODIF,ALL,MAT,2        ! Define concentrated masses

ALLSEL

LOCAL,11,0,2.5

ARSYM,X,ALL             ! Full model

NUMM,KP

NUMM,ELEM

NUMM,NODE

LSEL,S,,,14

LSEL,A,,,45

NSLL,S,1

D,ALL,ALL

ALLSEL

FINISH

TOFREQ,FREQ1,SING,1     ! Define single frequency function (1st)

TOVAR,FREQ1,OBJ         ! Define objective for topologicaloptimization

TOVAR,VOLUME,CON, ,14,ACTUAL ! Definevolume constraint (upper bound = 14)

TOTYPE,SCP                   ! Select SCP solutionapproach

TODEF,0.00001,               ! Initialize topologicaloptimization process,

                               accuracy =0.00001

TOLOOP,40,1                  ! Perform up to 40 iterations

FINISH

TOPLOT,1                     ! Plot finalpseudo-densities

TOGRAPH,OBJ                  ! Graph final objective (1stfrequency) history

TOGRAPH,CON                  ! Graph final constraint(volume) history