New
FAQ 002615 EN-US 03/07/2019

Frank Faulstich General RFEM

Is it necessary that when using plastic material according to theory II. Or III. Order must count?

Answer

No, when using a nonlinear material model, it is not absolutely necessary, according to theory II. Or III. To add order.

The material nonlinearity is taken into account in the calculation according to the theory of the 1st order.

The calculation according to theory II. Or III. Order means that the balance is placed on the deformed system. So it's a geometric nonlinearity.

The difference between II. And III. Order is that at III.Ordnung large rotations may occur.

So, if you do not have a stability problem or otherwise study the stability problem, then an I order calculation is sufficient.

Keywords

Calculation theory II. Order III. Order plastically nonlinear material model

Contact us

Contact Dlubal Software

Did you find your question?
If not, contact us via our free e-mail, chat, or forum support, or send us your question via the online form.

(267) 702-2815

info-us@dlubal.com

RFEM Main Program
RFEM 5.xx

Main Program

Structural engineering software for finite element analysis (FEA) of planar and spatial structural systems consisting of plates, walls, shells, members (beams), solids and contact elements

Price of First License
3,540.00 USD