chunhuo420 发表于 2005-2-19 11:27:36

程序说 zero stiffness in grid-point 2

在计算的时候,程序说 zero stiffness in grid-point 2

这个是哪里出了问题了?

计算的程序:

n
set mecha ratio1e-5
; 建模
gen zone brick &
p0 0 0 0 p1 0 0 0 p2 0 1 0 p3 25 0 30 &
p4 0 1 0 p5 25 1 30 p6 51 0 30 p7 51 1 30 &
size 5 1 10
group 1
gen zone brick &
p0 -60 0 -35.2941 p1 -60 0 -35.2941 p2 -60 1 -35.2941 p3 -60 0 0 &
p4 -60 1 -35.2941 p5 -60 1 0 p6 0 0 0 p7 0 1 0 &
size 10 1 12
group 2 range group 1 not
gen zone brick &
p0 -60 0 -35.3941 p1 51.1 0 30 p2 -60 1 -35.3941 p3 -60 0 -35.2941 &
p4 51.1 1 30 p5 -60 1 -35.2941 p6 51 0 30 p7 51 1 30 &
size 1 1 22
group 3 range group 1 not group 2 not
gen zone brick &
p0 -60 0 -90 p1 51.1 0 -90 p2 -60 1 -90 p3 -60 0 -35.3941 &
p4 51.1 1 -90 p5 -60 1 -35.3941 p6 51.1 0 30 p7 51.1 1 30 &
size 22 1 26
group 4 range group 1 not group 2 not group 3 not
gen zone brick &
p0 51.1 0 -90 p1 85 0 -90 p2 51.1 1 -90 p3 51.1 0 30 &
size 6 1 26
group 5 range group 1 not group 2 not group 3 not group 4 not

;赋参数
model mohr
pro bulk=8.33e9 she=6.25e9 dens 2.8e3 coh 600e3 &
friction 36 dilation 0. tension 7.0e6 range group 1
pro bulk=8.33e9 she=6.25e9 dens 2.8e3 coh 600e3 &
friction 36 dilation 0. tension 7.0e6 range group 2
pro bulk=111e9 she=83.3e9 dens 2e3 coh 500e3 &
friction 26 dilation 0. tension 210e6 range group 3
pro bulk=8.33e9 she=6.25e9 dens 2.8e3 coh 600e3 &
friction 36 dilation 0. tension 7.0e6 range group 4
pro bulk=8.33e9 she=6.25e9 dens 2.8e3 coh 600e3 &
friction 36 dilation 0. tension 7.0e6 range group 5
;约束
fix x y z range z -90.1 90.1
fix x range x 84.9 85.1
fix x range x -60.1 60.1
fix y
set gravity = 10.0
solve fos file slope3dfos.sav associated
ret

qinjianshe 发表于 2005-2-19 16:28:24

Re:程序说 zero stiffness in grid-point 2

单元网格材料属性没有加上

chunhuo420 发表于 2005-2-19 17:56:29

Re:程序说 zero stiffness in grid-point 2

qinjianshe wrote:
单元网格材料属性没有加上

请问怎么加 ?
能帮我改一下上面的命令吗?
谢谢

dynamax 发表于 2005-2-20 11:59:48

Re:程序说 zero stiffness in grid-point 2

gen zone brick不能有重合顶点
用gen zone wedge

liqiang12003 发表于 2010-12-12 16:19:41

哈哈,2005的老问题,今天我也碰到这个问题了,我搞了一下午才发现问题在哪里:
建模的坐标不要用负数!把模型整体平移一下,再算算坐标,使坐标里面没有负数就可以算了!
真是头痛啊,这个问题搞了好久。

liqiang12003 发表于 2010-12-12 17:50:00

楼上说的不对啊!

yepply 发表于 2011-4-10 04:29:13

楼上说的对
楼上的楼上确实说的不对
刚解决了这个问题
是单元的材料没有赋予,改变坐标根本没用

wll_cumt 发表于 2012-4-13 10:51:41

yepply 发表于 2011-4-10 04:29 static/image/common/back.gif
楼上说的对
楼上的楼上确实说的不对
刚解决了这个问题


5个group已经全部赋值了呀,“单元的材料属性如何赋”?
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