这是个隧道开挖的例子,在别人做的基础上改的,其中有许多不足之处
请各位朋友多指点!
/com
fini
/cle
*set,x1,-20
*set,y1,-30
*set,w,40
*set,h,50
*set,th,0.5
/prep7
k,,0,0 $k,,0,3.85
k,,0.88,5.5 $k,,2.45,6.15
k,,4.02,5.5 $k,,4.9,3.85 $k,,4.9,0
larc,1,2,6,8.13 $larc,2,3,6,3.21
larc,3,4,6,2.22 $larc,4,5,2,2.22
larc,5,6,2,3.21 $larc,6,7,2,8.13 $larc,7,1,4,6
line,2,6
a,1,2,6,7
a,2,3,4,5,6
blc4,x1,y1,w,h
aovl,3,2,1
lsel,s,line,,1,6,
lcomb,all,,
lsel,all,
et,1,beam3
et,2,plane42
keyopt,2,3,2
r,1,th,th*th*th/12,th, ,
mp,ex,1,2.6e7
mp,prxy,1,0.2
mp,dens,1,25
mp,ex,2,1.3e6
mp,prxy,2,0.32
tb,dp,2
tbdata,1,20,30,
mp,dens,2,22
mp,ex,3,1.3e6
mp,prxy,3,0.32
tb,dp,3
tbdata,1,20,30,
mp,dens,3,22
mp,ex,4,1.3e6
mp,prxy,4,0.32
tb,dp,4
tbdata,1,20,30,
mp,dens,4,22
lsel,s,line,,1
lesize,all,,,20,
latt,1,1,1
lmesh,all
alls
lsel,s,line,,6,8
lesize,all,,,20,
latt,1,1,1
lmesh,all
alls
lsel,s,line,,2,5
lesize,all,,,10,
latt,1,1,1
lmesh,all
alls
lsel,s,line,,9,12
lesize,all,,,40
alls
asel,s,area,,4
aatt,4,,2
amesh,all
alls
asel,s,area,,2
aatt,3,,2
amesh,all
alls
asel,s,area,,1
aatt,2,,2
amesh,all
alls
nsel,s,loc,x,x1
nsel,a,loc,x,x1+w
d,all,ux,0
alls !select everthing
nsel,s,loc,y,y1
d,all,uy,0
alls
acel,,9.8
fini
/solu
antype,static
autots,on !使用自动时间步
pred,on !打开时间步长预测器
lnsrch,on !打开线性搜索
nlgeom,on !打开大位移效果
nropt,full !设定牛顿-拉普森选项
cnvtol,f,,0.05,0
solve
esel,s,mat,,2
ekill,all
esel,all
time,3
nsubst,5
solve
time,100
solve
esel,s,mat,,3
ekill,all
time,105
nsubst,5
solve
第一,把time t 中的时间t当成是真实的时间以及中间的时间间隔处理不知正确否?
第二,是否就必须要考虑流变,输入粘塑性指数,洞顶的位移才随时间变化?
第三,杀死的单元是否需要继续施加约束? |