用ANSYS进行滞回分析

用ANSYS进行滞回分析

/PREP7

!定义单元类型，实常数，材料特性ET,1,SHELL143

R,1,12, , , , ,

MP,EX,1,196784

MP,NUXY,1,0.3

!双线性随动强化模型

TB,BKIN,1,1,2,1

TBDATA,,310,600,,,,

!定义关键点、线、面

K,1,54,0,0

K,2,-54,0,0

K,3,54,0,1000

K,4,-54,0,1000

A,1,2,4,3

!定义边界荷强迫位移,划分网格AESIZE,ALL,27,

MSHAPE,0,2D

MSHKEY,0

CM,_Y,AREA

ASEL, , , , 1

CM,_Y1,AREA

CMSEL,S,_Y

AMESH,_Y1

*do,i,1,5

D,i,ALL,0

*enddo

OUTPR,BASIC,ALL, OUTRES,ALL,ALL,

D,46,ux,30

TIME,1

AUTOTS,0

NSUBST,10, , ,1

KBC,0

LSWRITE,01,

!第2荷载步

D,46,ux,-30

TIME,3

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,02,

!第3荷载步

D,46,ux,30 TIME,5 AUTOTS,0 NSUBST,20, , ,1 KBC,0 LSWRITE,03,

!第4荷载步

D,46,ux,-30 TIME,7 AUTOTS,0 NSUBST,20, , ,1 KBC,0 LSWRITE,04,

!第1荷载步

D,46,ux,40 TIME,1 AUTOTS,0 NSUBST,10, , ,1 KBC,0 LSWRITE,05, !第2荷载步

D,46,ux,-40 TIME,3 AUTOTS,0 NSUBST,20, , ,1 KBC,0 LSWRITE,06, !第3荷载步

D,46,ux,40 TIME,5 AUTOTS,0 NSUBST,20, , ,1 KBC,0 LSWRITE,07, !第4荷载步

D,46,ux,-40 TIME,7 AUTOTS,0 NSUBST,20, , ,1 KBC,0 LSWRITE,08, !求解

/SOLU

LSSOLVE,1,8,1,

!画出荷载位移曲线

FINISH

/POST26

NSOL,2,46,U,X,

RFORCE,3,46,F,X,

XV AR,2

PLV AR,3, , , , , , , , , ,

回复：【分享】用ANSYS进行滞回分析

请教这位高手，本人也要做一个滞回分析，是个软钢圆柱，而我采用的是实体建模，采用SOLID45单元，双线性随动强化，可结果在大位移的情况就是出现蝶形曲线，而实验的情况则是出现一个梭形，跟你所画的图一样，我换了其他可用的SOLID单元，但结果还是一样。希望你能给我提些建议。

能给个联系方式吗？

以下是本人的一个命令流

/prep7

et,1,solid45

mp,ex,1,2.01e5

mp,prxy,1,0.26

TB,BKIN,1,1,2

TBTEMP,0

TBDATA,,185,0,

!建立单元及划分网格

block,,15,,15,,200

esize,5

vmesh,all

!施加底部约束

nsel,s,loc,z,0

d,all,all,0

ALLSEL,ALL

!定义加载的位移数组

*dim,disp,,6

wlw1=80

disp(1)=0

disp(2)=wlw1

disp(3)=0

disp(4)=-wlw1

disp(6)=wlw1

!进入solution阶段/solu

nlgeom,on

sstif,off

autots,on outres,all,all outpr,all,all

!施加位移荷载

time,0.0001

nsel,s,loc,z,200 nsubst,1,0,0

d,all,ux,disp(1)

ALLSEL,ALL

solve

*do,i,2,6

time,i

nsel,s,loc,z,200 d,all,ux,disp(i)

nsubst,40,0,0

allsel,all

solve

*enddo

finish

那么怎么提取滞回数据呢

/PREP7

ET,1,BEAM3

ET,2,COMBIN14

KEYOPT,2,1,0

KEYOPT,2,2,0

KEYOPT,2,3,2

R,1,0.16,0.00213333,0.4, , , ,

R,2,0.18,0.0054,0.6,0,0,600,

R,3, ,5000000, , !阻尼器线性系数C1 MPTEMP,,,,,,,,

MPTEMP,1,0

MPDATA,EX,1,,3e10

MPDATA,PRXY,1,,0.2 MPTEMP,,,,,,,,

MPTEMP,1,0

MPDATA,DENS,1,,2500

K,1,,,,

K,2,6,,,

K,3,,6,,

K,4,6,6,,

KPLOT

LSTR,1,3

LSTR,3,4

LSTR,2,4

LSEL,s,LINE,,1,3,2,

LATT,1,1,1, , , ,

LSEL,S,LINE,,2

LATT,1,2,1, , , ,

LSEL,all,

LESIZE,ALL,1, , , , , , ,1 LMESH,ALL,

/SHRINK,0

/ESHAPE,1.0

/EFACET,1

/RATIO,1,1,1

/REPLOT

TYPE, 2

MAT, 1

REAL, 3

ESYS, 0

E,2,14

D,1,all,,,14,13,