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
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!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
/post26
nsol,2,2,u,y
nsol,3,2,u,x
prod,4,2,,,,,,-1
prod,5,3,,,,,,-1
xvar,4
plvar,1 ！单调加载的方法
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,1 :载荷一下子就加上去了
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, , , , , , , , , ,
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