convert files from Solidworks 2012 (.stl/.sldprt) to igs

Hello,

I just finished my final project for school, but I need to do the DFMA and Nastran Analysis, and for that I need igs files. Can someone please change the format of my Solidworks parts to igs (I only have the student version so I can't do it here.) It is a big project, so there are about 20 parts. I looked online everywere for a program but I can't find one.

Please let me know if anyone can convert them.

Thanks!

Nataly

SolidworksImport export