Hello,

I am working with Abaqus to create a substructure, which automatically generates the standard files required to describe the substructure. I need the eigenvalues and eigenvectors to be saved within an ODB file. Abaqus provides a substructure recovery utility, which can be used to solve the eigenvalue problem again and save the results into the ODB file. However, when I read the ODB file, I find that the eigenvalues are not included. Instead, only the mode numbers are listed as frequency indicators, such as Mode 1 = 1 Hz, Mode 12 = 12 Hz, etc., but I need the actual frequency values in the file.

I understand that there is also a utility called odb2sim available, but there doesn't seem to be a way to convert back from SIM to ODB format to achieve what I need. How can I ensure that the eigenvalues and eigenvectors for the substructure are stored in an ODB file, along with the correct frequency values?

Thank your for your help.