On Jan 14, 11:31*am, "J.Kahn" wrote:
If someone was to design a steel tube fuselage or a modification to a
steel tube fuselage, does anybody know of a relatively inexpensive and
painless way to get a stress analysis done, or software to do it?

John

There is a free finite element program available for download from
this NASA website. They may ask for voluntary donations.

http://femci.gsfc.nasa.gov/links.html

The link on the page that I am talking about is the MYSTRAN link near
the bottom of the page. It is a finite element analysis program
written by Dr. Bill Case of NASA.
There are many other links that should be useful.

Regards,
Bud