Stress Stiffening
Stress Stiffening
(OP)
I have a model of a pressure vessel and want to run a solution with stress stiffening. I'm primarily experienced with ANSYS, but the model I have was developed using PATRAN for a NASTRAN solver. I didn't see anything in the user manual under stress stiffening. I have to assume that NASTRAN/PATRAN has a way to include this effect. Any NASTRAN users out there have the answer?
Thanks
Phil
Thanks
Phil





RE: Stress Stiffening
If you actually mean performing an analysis with strain hardening of the material past yield, PATRAN/NASTRAN also allows entry of the stress-strain curve for a material for a non-linear analysis including strain hardening.
RE: Stress Stiffening
thanks. I did mean the membrane tension behavior. Thanks for the reply.
RE: Stress Stiffening
Are you a native of Berkeley, Calif., born on Aug. 2, 1941, and did you earn a pilot’s license at the age of 18?
RE: Stress Stiffening
The Nastran sequence for stress stiffening effect is SOL106 but is implemented only with 1D and 2D elements (I assume your pressure vessel is made of shells, so should be ok).
Gio1
RE: Stress Stiffening
RE: Stress Stiffening
I seriously doubt that Phil Condit, the CEO of Boeing, is doing FE stress analysis.
If he is, then I envy him even more!
One of them will be giving a lecture to the RAeS in London in November. There's your chance to find out which!
STF
RE: Stress Stiffening
lol
wishful naiveity on my part maybe...