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How to get rid off from this error??

Hi everyone,
I was trying to do Normal Modes Analysis on Optistruct 2025 but getting this error again n again ….can somebody help me through this.

*** ERROR # 2933 ***
There are more number of degree of freedoms with double dependency
than the number of independent degree of freedom near grid ID
89153. PARAM,AUTOMSET is ineffective in this situation.

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Alberto Campagna

Hi,

this is probably a modeling error. For example, it happens when you apply a constraint to a grid that is also a dependent node of a rbe2. Automset card can automatically solve some conflicts of node dependency, but not in this case. Check the grid id of the error message to see what is defined on it.

Regards.

Alberto

Cesar_Rivas1

there are rigid elements that share dependants nodes.

in hypermesh, go to Validate>Model and click on Run Checks. HM will show which of the rigid elements have dependency.

Zheng Guotao

https://community.altair.com/discussion/comment/193224#Comment_193224

This method can solve this problem

Thanks very much