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hongsemenghuan

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[交流] 【求助】Comsol 求解奇异矩阵问题

按照模型数据库中的步骤做,但在求解过程中遇到“错误7111,奇异矩阵”的提示,细节描述为Exception:
        com.femlab.jni.FlNativeException: Singular matrix
Messages:
        Singular matrix

Stack trace:
        at linearization.cpp, row 2316, (
There are 1 void equations (empty rows in matrix) for the variable e0
There are 1 void equations (empty rows in matrix) for the variable e1
There are 1 void equations (empty rows in matrix) for the variable e2
and similarly for the degrees of freedom (empty columns in matrix)
)
        at com.femlab.solver.FlSolver.femStatic(Native Method)
        at com.femlab.solver.FemStatic.run(Unknown Source)
        at com.femlab.server.FlRunner.run(Unknown Source)
        at com.femlab.util.i.run(Unknown Source)
        at com.femlab.util.aa.run(Unknown Source)
请问,究竟错在哪了,该怎样改正?谢谢指教!
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