新手MM的ansys开挖模型命令流，请多指教！
我做了个城门洞型的二维隧洞分析，本来想要做开挖的，但是做到有一步的时候出问题了。希望达人哥哥姐姐们多多指教。解决这个问题后，我继续把开挖的做出来。方法比较笨，不要见笑。/nopr
keyw,pr_struc,1
/prep7
/pnum,kp,1
/pnum,line,1
/pnum,area,1
et,1,beam3
et,2,plane42
keyopt,2,3,2
r,1,0.15,0.000281,0.15
mp,ex,1,23e9
mp,prxy,1,,0.2
mp,dens,1,,2500
mp,ex,2,8e9
mp,prxy,2,,0.28
mp,dens,2,,2400
tb,dp,2,,,
tbmodif,1,1,1.2e6
tbmodif,1,2,42
mp,ex,3,16e9
mp,prxy,2,0.28
mp,dens,2,,2500
tb,dp,3,,,
tbmodif,1,1,2.4e6
tbmodif,1,2,50
save
k,1,-2.5
k,2,-2.5,4
k,3,-5.4
k,4,-5.4,5
k,5,-42,-12
k,6,-24,-12
k,7,-2.5,-12
k,8,-42
k,9,-24
k,10,-42,15
k,11,-24,15
k,12,-42,39
k,13,-24,39
k,14,-2.5,-1
k,15,2.5,4
k,16,5.4,5
l,5,6
l,6,7
l,8,9
l,9,3
l,10,11
l,12,13
l,5,8
l,6,9
l,7,14
l,14,1
l,8,10
l,9,11
l,10,12
l,11,13
l,1,3
al,1,8,3,7
al,2,9,10,15,4,8
al,3,12,5,11
al,5,14,6,13
arsymm,x,all,,,,0,0
k,29
k,30,0,1.99
circle,30,2.81
ldele,33,34,1
l,1,2
lsbl,32,33
l,1,35
ldele,35
l,23,15
lsbl,31,33
l,23,2
ldele,35
circle,30,5.71
ldele,37,38,1
l,3,4
lsbl,35,37
l,3,39
ldele,39
l,24,16
lsbl,33,37
l,4,24
ldele,39
kdele,34
kdele,38
kdele,30
kdele,31
kdele,15
kdele,37
kdele,33
k,40,,15
k,41,,39
l,7,21
l,14,22
l,1,29
l,29,23
l,11,40
l,40,25
l,13,41
l,41,27
l,29,32
l,32,36
l,36,40
l,40,41
al,4,35,38,49,43,12
al,43,50,45,14
al,24,25,44,49,40,33
al,44,28,46,50
al,42,31,36,47
al,41,47,34,32
al,15,32,34,48,38,35
al,23,33,40,48,36,31
ldele,39
k,42,0,-1
l,7,21
l,22,42
l,14,42
al,37,21,39,51,9
al,51,39,22,42,41,10
save
lesize,1,6
lesize,3,6
lesize,5,6
lesize,6,6
lesize,16,6
lesize,18,6
lesize,26,6
lesize,29,6
lesize,2,3
lesize,4,3.33
lesize,15,1.45
lesize,43,8
lesize,2,3
lesize,4,3.33
lesize,15,1.45
lesize,43,8
lesize,45,8
lesize,20,3
lesize,24,3.33
lesize,23,1.45
lesize,44,8
lesize,46,8
lesize,37,0.417
lesize,51,0.417
lesize,39,0.417
lesize,41,0.417
lesize,42,0.417
lesize,34,1.0273
lesize,36,1.0273
lesize,38,2.365
lesize,40,2.365
lesize,7,2
lesize,8,2
lesize,9,2.2
lesize,10,1
lesize,21,2.2
lesize,22,1
lesize,17,2
lesize,19,2
lesize,11,5
lesize,12,5
lesize,25,5
lesize,27,5
lesize,35,1.282
lesize,32,1.6365
lesize,33,1.282
lesize,31,1.6365
lesize,47,0.8
lesize,48,1.45
lesize,49,1.316
lesize,13,4
lesize,14,4
lesize,50,4
lesize,28,4
lesize,30,4
lesize,10,1
lesize,22,1
加固圈单元划分
type,2
mat,3
real,1
amesh,15
amesh,16
划分开挖土体网格
type,2
mat,2
real,1
amesh,13
amesh,14
save
划分未开挖土体
amap,17,7,21,22,14
amap,18,14,22,23,1
amap,2,6,7,1,9
amap,9,9,3,36,40,11
amap,6,21,18,19,23
amap,11,19,24,36,40,25
amesh,1
amesh,3
amesh,4
amesh,5
amesh,7
amesh,8
amesh,10
amesh,12
save
初喷砼单元设置
type,1
mat,1
real,1
e,1,15
e,15,16
e,16,12
e,12,14
e,14,13
e,13,10
e,10,32
e,32,31
e,31,30
e,30,34
e,34,33
e,33,22
save
finish
加载与初始地应力求解
/sol
allsel,all
d,346,ux
d,349,ux
d,352,ux
d,353,ux
d,354,ux
d,355,ux
d,356,ux
d,370,ux
d,371,ux
d,367,ux
d,382,ux
d,385,ux
d,386,ux
d,387,ux
d,388,ux
d,389,ux
d,400,ux
d,430,ux
d,346,uy
d,347,uy
d,348,uy
d,400,uy
d,410,uy
d,409,uy
d,172,uy
d,173,uy
d,174,uy
d,175,uy
d,176,uy
d,177,uy
d,178,uy
d,179,uy
d,262,uy
d,274,uy
d,275,uy
d,276,uy
d,277,uy
d,278,uy
d,279,uy
d,280,uy
d,94,uy
d,95,uy
d,96,uy
d,97,uy
d,98,uy
d,99,uy
d,100,uy
d,101,uy
d,102,uy
d,103,uy
d,104,uy
d,105,uy
d,106,uy
施加重力加速度
acel,0,10,0,
save
esel,s,type,,1
ekill,all
save
nropt,full,,
deltim,100,20,1000
allsel,all
outres,all,all
solve
finish
save
关于这个命令流出现的问题
会出现：A check of your load data produced 1 warningshould the solv command be executed.
我不知道哪里出问题了，希望达人解答！谢谢。
还有问题如下
我对书上例子，不太理解如：nsel,s,loc,x,-55.1,-54.9
nsel,r,loc,x,54.9,55.1
里面的55.1和54.9到底指的是什么？
我把其中一段关于定义荷载的命令修改如下：
/solallsel,all
nsel,s,loc,y,-12
d,all,,,,,,uy,,,,,
nsel,s,loc,x,-42
nsel,a,loc,x,42
d,all,,,,,,ux,,,,,
回复 #3 sophia67 的帖子
这表示施加约束，对x=-55和x=55两个结点施加约束。55.1和54.9不就是55加上0.1和减少0.1吗？回复 3# 的帖子
看在什么坐标体系下页:
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