求助隧道三维开挖的问题
提示模型 不稳,对角线系数大于1e11是怎么回事?计算中out文件中出的错误,如下
(A) BOUNDARY CONDITIONS -
THE B.C. MUST NOT ADMIT A RIGID BODYDISPLACEMENT OR ROTATION OF THE TOTALSTRUCTURE.
(B) DELETION OF DEGREES-OF-FREEDOM - ALL D.O.F. AT NODAL POINTS WITHOUT STIFFNESS CONTRIBUTIONS FROM ELEMENTSMUST HAVE BEEN DELETED
(C) ELEMENT GEOMETRY AND CONNECTIVITY -
ALL ELEMENTS MUST HAVE BEEN INPUT WITH
PROPER NODAL NUMBERS, AS DESCRIBED IN
THE USERS MANUAL.
(D) ELEMENT INTEGRATION ORDERS -
THE ORDERS OF NUMERICAL INTEGRATIONS FOR
EVALUATION OF ELEMENT MATRICES MUST BE
SUFFICIENTLY HIGH.
(E) MATERIAL DATA -
ALL MATERIAL DATA MUST BE PHYSICALLY
REASONABLE (E.G. YOUNG*S MODULUS MUST
BE GREATER THAN ZERO).
*** IN MATERIALLY NONLINEAR AND/OR LARGE DISPLACEMENTANALYSIS ***
IF THE MODEL HAS BEEN INPUT CORRECTLY (WITH ALL
THE ABOVE CONSIDERATIONS TAKEN INTO ACCOUNT), THEN
THE COLLAPSE LOAD OF THE MODEL HAS BEEN REACHED.
我的命令流文件如下附件
请各位大虾帮帮忙看看
[ 本帖最后由 minsen83712 于 2007-5-6 10:47 编辑 ] 怎么没有人帮我啊?求求大家阿 现在已经模型没有问题了,不过收敛还是差了点。 你的模型下了下来,怎么没有网格呢?你说收敛差点,用位移收敛准则试试,而且里面的限值也是可以改的 楼主好
我也在做三维隧道的模拟 希望能跟你一起探讨
可否留下个联系方式?
我的Q:32523085
MSN:diana_swust@hotmail.com
模型有问题,如图
模型有问题 果然是高手啊,我怎么就没有看出来这个问题啊 把EG3去掉看看你的版本很特别~~~~~8.3.0
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