急急!请高手帮我看一下命令流(混凝土)
superhaiyang0
2008年01月06日 22:15:06
来自于ANSYS
只看楼主

这是一个预应力混凝土梁,我想算他的极限荷载,想分荷载步加力,第一步加的是预应力,第二步加的是重力,从第三步开始加力,但是加到第八步的时候就不收敛了,怎么调都不收敛,但是上面的混凝土还没有压坏,好像是发生屈曲破坏!我估计总共的力可以加到-4000,但是现在就才加到-2500。因为我觉得这个是弹塑性分析,所以必须分荷载步加还是加力的时候可以在一个荷载步加呀?请高手指点指点本人现在做论文,很着急,天天做电脑边,累死了.都抓狂了啊.希望得到高手指点迷津,帮我走出困境.谢谢了.

这是一个预应力混凝土梁,我想算他的极限荷载,想分荷载步加力,第一步加的是预应力,第二步加的是重力,从第三步开始加力,但是加到第八步的时候就不收敛了,怎么调都不收敛,但是上面的混凝土还没有压坏,好像是发生屈曲破坏!我估计总共的力可以加到-4000,但是现在就才加到-2500。
因为我觉得这个是弹塑性分析,所以必须分荷载步加
还是加力的时候可以在一个荷载步加呀?
请高手指点指点

本人现在做论文,很着急,天天做电脑边,累死了.都抓狂了啊.希望得到高手指点迷津,帮我走出困境.谢谢了.
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superhaiyang0
2008年01月06日 22:16:56
2楼
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superhaiyang0
2008年01月06日 22:17:13
3楼
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superhaiyang0
2008年01月06日 22:17:33
4楼
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superhaiyang0
2008年01月06日 22:17:51
5楼
type,1
real,3
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superhaiyang0
2008年01月06日 22:18:15
6楼
type,1
real,2
mat,2

lsel,s,loc,z,3.725,
lsel,r,loc,y,0.040,0.410
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lsel,r,loc,y,0.410
LESIZE,all,,,2
lmesh,all
allsel,all
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superhaiyang0
2008年01月06日 22:18:32
7楼
asel,s,loc,z,0,
DA,all,SYMM
allsel,all

asel,s,loc,y,-0.050,
NSLA,R,1
D,all, , , , , ,UX,UY, , , ,
allsel,all



/solu

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solve

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allsel,all
NSUBST,5,10,4,1
solve

*DO,I,3,8
TIME,I
fcum,add
nsel,s,loc,z,1.725,
nsel,r,loc,y,0.450,
f,all,fy,-1000
allsel,all
NSUBST,50,60,10,1
solve
*ENDDO

*DO,I,9,13
TIME,I
fcum,add
nsel,s,loc,z,1.725,
nsel,r,loc,y,0.450,
f,all,fy,-1000
allsel,all
NSUBST,60,70,50,1
solve
*ENDDO

time,14
fcum,add
nsel,s,loc,z,1.725,
nsel,r,loc,y,0.450,
f,all,fy,-500
allsel,all
NSUBST,50,60,30,1
solve

*DO,I,15,17
TIME,I
fcum,add
nsel,s,loc,z,1.725,
nsel,r,loc,y,0.450,
f,all,fy,-200
allsel,all
NSUBST,40,50,30,1
solve
*ENDDO

time,18
fcum,add
nsel,s,loc,z,1.725,
nsel,r,loc,y,0.450,
f,all,fy,-70
allsel,all
NSUBST,60,70,50,1
solve

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