Can I remove geometric nonlinearities?

[Giannis1993]

My question is whether I can choose whether to include geometric nonlinearities (as one can do with material nonlinearities).

[adtzlr]

Short answer: No.

This will never be implemented as TrussPy is intended as a nonlinear analysis program and the whole power of the solution algorithm (path-following) is based on an exact geometric description of the system kinematics.

[Giannis1993]

I thought that if you put the step-wise solution parameters as follows, you can only use the initial tangent stiffness and therefore obtain the linear solution: # Step-wise solution parameters M.Settings.dlpf = 1 # maximum allowed incremental load-proportionality-factor M.Settings.du = 10000 # maximum allowed incremental displacement component (a large number) M.Settings.incs = 1 # maximum number of increments Anyway, thanks a lot for the code. Very helpul! From: Andreas D.<mailto:notifications@github.com> Sent: Thursday, April 23, 2020 23:20 To: adtzlr/trusspy<mailto:trusspy@noreply.github.com> Cc: Giannis1993<mailto:yianpass@hotmail.com>; Author<mailto:author@noreply.github.com> Subject: Re: [adtzlr/trusspy] Can I remove geometric nonlinearities? (#16) Short answer: No. This will never be implemented as TrussPy is intended as a nonlinear analysis program and the whole power of the solution algorithm (path-following) is based on an exact geometric description of the system kinematics. — You are receiving this because you authored the thread. Reply to this email directly, view it on GitHub<#16 (comment)>, or unsubscribe<https://github.com/notifications/unsubscribe-auth/AN6QJEQO5VC6UV4VLIZVQNLROCWKHANCNFSM4MPHVCNA>.