wrote:
On Jan 14, 10:11 pm, Charles Vincent wrote:
A Finite Element Analysis package is worse than useless without mastery
of the basics. If you can't do it by hand, what you get from FEA could
get you or someone else killed. EAA still sells "Stress Without Tears"
that takes you through the basic principles and simplified equations for
doing stress analysis of aircraft structures. If you can't master that,
you aren't going to do much better learning the ins and outs of meshing
for FEA.

Charles.- Hide quoted text -

- Show quoted text -

'Stress Analysis Made Painless' by Raoul J. Hoffman

Hand analysis can be made painless through simplified equations
available from somebody, whereas setting up a finite analysis input
file in order to let a computer do the calcs is beyond his grasp. GOT
IT! thanks.

Bud

Without a basic grounding in airframe stress analysis, how does one know
where to apply the loads and the vectors? How does one determine the
magnitude of the loads? Setting aside the learning curve for FEA and
the program, how does one know the solution is in the realm of possible
if you haven't applied any hand calcs beforehand? A comparison to a
second independent analysis method is generally part of the FEA process.

Finally, FEA is not simple. ISO guidelines suggest a minimum of five
years engineering experience and six months of post training FEA
experience for FEA work on critical structures. FEA texts will assume
you already understand stress analysis. The sources suggested by others
here for hand calcs of stress(other than Teichmann) do not In the
end, unless you are set on generating worthless pretty color pictures,
you will have to hit the hand calcs anyway.

Charles

Charles