FAQ 000303 EN

1 December 2017

Robert Vogl Calculation RFEM RSTAB

How are the signs of the member moments defined?

Answer

The bending moment My is positive if tensile stresses occur at the positive member face (in the direction of the z axis). Mz is positive if compressive stresses occur at the positive member face (in the direction of the y axis).

The sign definition for torsional moments, axial forces, and shear forces conforms to the usual conventions: the internal forces are positive if they act in the positive direction at the positive face. 

Keywords

internal force member internal force moment sign negative positive shear force bending moment

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

info@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
RSTAB Main Program
RSTAB 8.xx

Main Program

The structural engineering software for design of frame, beam and truss structures, performing linear and nonlinear calculations of internal forces, deformations, and support reactions

Price of First License
2,550.00 USD