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Swapy

Frequency response analysis

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I am trying to do frequency response analysis of a beam (2-d) but i am getting error saying 

*** ERROR # 291 ***
 Output results for Frequency Response, Transient Analysis and Random
 Response are only requested at grids that have been constrained out. 
 Note that displacements and stresses are disabled by default for such 
 loadcases. Also note that the amount of results for such loadcases may 
 be extremely large, and therefore output SETs are highly recommended.

Can some one help me with this?

I have attached my model file with this post.

70_beam.fem

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Hi @Swapy

 

Constraint the node where you are applying unit load with SPC for same DoF as unit load.

 

Why have you constrained the entire plate in Z-drection?

This may not help extracting modes. Consider this.

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Thanks for the reply Prakash 

I want to constraint my vibrations in Only X_Y plane (2D), so i have i have constrained entire plate in z direction

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Swapy.

 

OK. But I think this will error out if you are restrict the mode towards Z axis. Give it a try.

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