Is there a way to save modal quantities for future calculations?

david_ur_1

The process of EIGRA or EIGRL is often time consuming and coming back to a model to recalculate a different forced response requires recalculating the whole modal space again.

Any input on the topic will do,

Thank you!

Marina_Lima

Hi David,

You can use EIGSAVE to save eigenvalues and eigenvectors, then use EIGRETRIEVE to retrieve them on a Modal frequency response or Modal transient response.
https://2024.help.altair.com/2024.1/hwsolvers/os/topics/solvers/os/eigvsave_sub_r.htm
https://2024.help.altair.com/2024.1/hwsolvers/os/topics/solvers/os/eigvretrieve_sub_r.htm

Best regards,
Marina Lima