How to decide number of modes to extract in modal analysis?

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Accepted Answer

The number of modes to extract in modal analysis is typically determined based on the desired accuracy of the analysis and the computational resources available.

Consider the complexity of the structure being analyzed - more complex structures may require more modes to be extracted
Take into account the desired accuracy of the analysis - higher accuracy may require more modes to be extracted
Evaluate the computational resources available - extracting a large number of modes can be computationally expensive
Perform sensitivity analysis to determine the impact of different numbers of modes on the results
Consult with domain experts or refer to industry standards for guidance on selecting the number of modes

How to decide number of modes to extract in modal analysis?

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