求助shaoyu版主

chairmen001

轴对称问题遇到以下问题:请指点!
Model errors exist - file D:\Documents and Settings\mxy\桌面\lx2.dat has not been created.
Please resolve conditions indicated by ERROR or ALERT
messages given above.
***WARNING: No element connection for node 1 directions 1, 4, 5, 6
             No element connection for node 2 directions 1, 4, 5, 6
             No element connection for node 3 directions 1, 4, 5, 6
             No element connection for node 4 directions 1, 4, 5, 6
             No element connection for node 5 directions 1, 4, 5, 6
             No element connection for node 6 directions 1, 4, 5, 6
             No element connection for node 7 directions 1, 4, 5, 6
             No element connection for node 8 directions 1, 4, 5, 6
             No element connection for node 9 directions 1, 4, 5, 6
             No element connection for node 10 directions 1, 4, 5, 6
             No element connection for node 11 directions 1, 4, 5, 6
             No element connection for node 12 directions 1, 4, 5, 6
             No element connection for node 13 directions 1, 4, 5, 6
             No element connection for node 14 directions 1, 4, 5, 6
             No element connection for node 15 directions 1, 4, 5, 6
             No element connection for node 16 directions 1, 4, 5, 6
             No element connection for node 17 directions 1, 4, 5, 6
             No element connection for node 18 directions 1, 4, 5, 6
             No element connection for node 19 directions 1, 4, 5, 6
             No element connection for node 20 directions 1, 4, 5, 6
             No element connection for node 21 directions 1, 4, 5, 6
             No element connection for node 22 directions 1, 4, 5, 6
             No element connection for node 23 directions 1, 4, 5, 6
             No element connection for node 24 directions 1, 4, 5, 6
             No element connection for node 25 directions 1, 4, 5, 6
             No element connection for node 26 directions 1, 4, 5, 6
             No element connection for node 27 directions 1, 4, 5, 6
             No element connection for node 28 directions 1, 4, 5, 6
             No element connection for node 29 directions 1, 4, 5, 6
             No element connection for node 30 directions 1, 4, 5, 6
             No element connection for node 31 directions 1, 4, 5, 6
             No element connection for node 32 directions 1, 4, 5, 6
             No element connection for node 33 directions 1, 4, 5, 6
             No element connection for node 34 directions 1, 4, 5, 6
             No element connection for node 35 directions 1, 4, 5, 6
             No element connection for node 36 directions 1, 4, 5, 6
             No element connection for node 37 directions 1, 4, 5, 6
             No element connection for node 38 directions 1, 4, 5, 6
             No element connection for node 39 directions 1, 4, 5, 6
             No element connection for node 40 directions 1, 4, 5, 6
             No element connection for node 41 directions 1, 4, 5, 6
             No element connection for node 42 directions 1, 4, 5, 6
             No element connection for node 43 directions 1, 4, 5, 6
             No element connection for node 44 directions 1, 4, 5, 6
             No element connection for node 45 directions 1, 4, 5, 6
             No element connection for node 46 directions 1, 4, 5, 6
             No element connection for node 47 directions 1, 4, 5, 6
             No element connection for node 48 directions 1, 4, 5, 6
             No element connection for node 49 directions 1, 4, 5, 6
             No element connection for node 50 directions 1, 4, 5, 6
             Message limit reached - above message has been suppressed 291 times.
             Nodal degrees of freedom without element
             connection have been fixed for ADINA input data.
             There may still be degrees of freedom without
             stiffness - see documentation.
***INPUT ERROR: No elements defined for element group 2.

shaoyu1979

删除第二单元组可以算

chairmen001

版主您好:第二组是土钉,是不能删的!删了也不能算!该问题是轴对称问题,求您帮忙指导,我是新手!

shaoyu1979

***INPUT ERROR: No elements defined for element group 2.
说明group2 没有单元，这在adina中是不允许的。把它删掉是可以算的。

chairmen001

如果删了就无土钉了,我同时也问为什么会出现这样的错误?
***INPUT ERROR: No elements defined for element group 2.

shaoyu1979

应该是土钉没有划分网格

chairmen001

土钉划分网格 也不行!烦您将我附的in文件运行以下看看!

chairmen001

也就是该锚杆单元组设置对不对?

shaoyu1979

我仔细看了看,在轴对称问题,3d rebar单元不适用.
你把轴对称问题改成平面问题就行了
但你的问题的是轴对称问题
也许要用其他的问题解决

chairmen001

谢谢版主,今天我也试了一下,是您说的这样,那么轴对称问题应如何解决?

chairmen001

对于3维问题,这个外圆周如何施加径向约束?

shaoyu1979

可以定义圆柱体坐标,然后在apply->load->pressure里面,定义压力幅值大小的时候,选择你定义的参考坐标.
如图:

shaoyu1979

另外附上in,另外如果你要压力上大下小,需要定义空间函数.在
geometry->spatial function ,定义..

chairmen001

谢谢版主的帮助,另外在外圆周上如何施加边界条件?

chairmen001

再次谢谢版主的帮助