本帖最后由 gdyu_yu 于 2010-8-26 23:03 编辑
哪位高手做过金属杆的同轴碰撞?我怎么做出来和理论解相差十万八千里?我是用ANSYS——Lsdyna做的。请求各位大侠帮帮忙?
还有就是edrst和edhtime后的参数定义得不同,结果(应力或应变)时程曲线完全不同。为什么?
请楼主和各位大虾帮帮忙!!!!
不胜感激!!!!!!!!
命令流如下:
/prep7
/view,,1,1,1
/units,si
et,1,solid164
mp,ex,1,7e10
mp,dens,1,2700
mp,nuxy,0.3
tb,biso,1
tbdata,1,310e6,2e9
mp,ex,2,3.136e10
mp,dens,2,2450
mp,nuxy,2,0.2
tb,biso,2
tbdata,1,16e6,3e9
cyl4,,,15e-3,0,15e-3,90,0.3
lesize,1,,,10
lesize,2,,,10
lesize,7,,,60
cylind,0,15e-3,0.31,1.56,0,90
cylind,0,15e-3,1.59,2.84,0,90
lesize,11,,,10
lesize,10,,,10
lesize,16,,,250
lesize,19,,,10
lesize,20,,,10
lesize,25,,,250
mshkey,1
mshape,3d
type,1
mat,1
vmesh,all
cylind,0,15e-3,1.56,1.59,0,90
lesize,32,,,10
lesize,33,,,10
lesize,34,,,20
type,1
mat,2
vmesh,4
nsel,s,loc,z,0,300e-3
cm,strike_bar,node
edivelo,strike_bar,,,30
allsel
nsel,s,loc,y,0
cm,sld_1,node
nsel,all
nsel,s,loc,x,0
cm,sld_2,node
nsel,all
edbound,add,slide,sld_1,0,1,0,,0
edbound,add,slide,sld_2,1,0,0,,0
edcgen,assc
save
fini
/solu
time,0.01
edrst,100 !可以把这两个数值变小,如edrst,20
edhtime,1000 !计算会快一点edhtime,100
solve
fini |