This article was translated by Google Translator View original text

How does 1D work plastically?


Currently, the plasticity for 1D elements only works in relation to the normal stresses in a member, which means that only an interaction between axial force and moment is possible. The shear force interaction is not taken into account. In addition, the stresses from shear force are only calculated elastically. When using one of the plastic material models, it is also important to ensure a sufficient division of the elements, because a cross-section is generated internally on each Gauss point on the member element where the stress is calculated and, if necessary, a stiffness reduction for redistribution of internal forces is performed. If, for example, the number of divisions is increased, the model may become unstable because the redistributions of stresses can not be carried out any longer, which means that the loading in the cross-section is too high.

It is generally recommended to use a division of 50 for member elements when using the plastic material model.


Plastic 1D

Contact us

Contact to Dlubal

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.

+49 9673 9203 0

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