topic Re: P-Delta with Shell elements - no increment on lateral displacements in Robot Structural Analysis Forum

P-Delta with Shell elements - no increment on lateral displacements

Anonymous — Fri, 06 Jan 2017 20:55:19 GMT

Hi there,

I have a deformed beam (I moved the nodes to simulate an imperfection) and when I run a second order P-delta analysis I get the exact same results as in a first order analysis.

I've attached my simple model for your convenience.

Thanks

Tiago

Re: P-Delta with Shell elements - no increment on lateral displacements

Rafacascudo — Sat, 07 Jan 2017 15:22:49 GMT

Results are not exactly the same .

Maybe due to the small applied vertical load

Re: P-Delta with Shell elements - no increment on lateral displacements

Anonymous — Mon, 09 Jan 2017 09:50:31 GMT

Hi Rafa, Thanks for your reply.

I'm expecting an increase of 1/(alfa,crit-1) not some really residual differences when I have such low alfa crits.

Cheers

Tiago