ANSYS单调加载、滞回曲线

Ansys中关于分布加载的情况模拟

1. 单调加载[do 循环的应用]

2. 滞回曲线

!EX4.20 线性/非线性静态分析的荷载步直接求解P288 王新敏教材

步骤：Time荷载步----nsubst子步--------施加荷载（位移或力）-------solve求解/solu

antype,0

nlgeom,on ！打开大变形（即非线性打开）

outres,all,all

autots,off

time,1

nsubst,10

f,2,fy,-2000

solve

time,2

f,2,fy,2000

nsubst,20

solve

time,3

f,2,fy,-4000

nsubst,30

solve

time,4

f,2,fy,4000

nsubst,30

solve

finish

/post26

nsol,2,2,u,y

rforce,3,1,f,y

prod,4,2,,,,,,-1

/axlab,x,Uy

/axlab,y,Fy

xvar,4

plvar,3

prvar,3,4

画荷载-位移曲线的方法

=====

!EX8.5 端部受集中力的悬臂梁几何非线性分析P452 王新敏教材/solu

dk,1,all

antype,0

nlgeom,1

nsubst,20

outres,all,all

*do,i,1,10

fk,2,fy,-i*phz

time,i*phz

solve

*enddo ！单调加载的方法

/post26

nsol,2,2,u,y

nsol,3,2,u,x

prod,4,2,,,,,,-1

prod,5,3,,,,,,-1

xvar,4

plvar,1

ANSYS绘制滞回曲线

前段时间刚学的用ANSYS绘制钢框架接点的滞回曲线。现在写了命令流给大家看一下了：/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

TBDA TA,,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,

!第1荷载步

D,46,ux,10

TIME,1

AUTOTS,0

NSUBST,10, , ,1

KBC,0 ! kbc,0 :载荷一步步加上去的kbc,1 :载荷一下子就加上去了LSWRITE,01,

!第2荷载步

D,46,ux,-10

TIME,3

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,02,

!第3荷载步

D,46,ux,20

TIME,5

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,03,

!第4荷载步

D,46,ux,-20

TIME,7

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,04,

D,46,ux,30

TIME,9

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,05,

D,46,ux,-30

TIME,11

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,06,

D,46,ux,40

TIME,13

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,07,

D,46,ux,-40

TIME,15

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,08,

D,46,ux,60

TIME,17

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,09,

D,46,ux,-60

TIME,19

AUTOTS,0

NSUBST,20, , ,1

KBC,0

LSWRITE,10, !求解

FINISH

/SOLU

LSSOLVE,1,10,1,

!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, , , , , , , , , ,

=================================================