The Dymola media download contains a directory extra with the file CompatibilityLibrariesMSL323.zip.
This should include everything that is needed.
If there are problems, contact your Dymola provider.
Dymola installation from rpm files
Dymola for Linux is distributed as a zip file that contains rpm files. To install these files on Ubuntu, replace the first line with the actual Dymola version and run the following commands:
Now dymola will start dymola and man dymola should show a man page.