【求助】刚柔耦合仿真中出现的警告：有没有大神帮着分析下怎么回事？
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WARNING: FLEX_BODY 1:
Attachment node 1884 has zero rotational mode shapes for all active modes.
The flexible body may behave more rigid than expected if the node is constrained.
Attachment node 1884 has zero rotational mode shapes for all active modes.
The flexible body may behave more rigid than expected if the node is constrained.
