用abaqus做一个三层混凝土框架结构的模态分析是一下错误怎么解决？ 10
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错误提示：Three factorizations in a row failed. Check the model. It is possible that the model contains the kinematic coupling definition set up in a way that a degree of freedom has neither mass nor stiffness.
结构图：
郑钧 Adam 
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