This article was translated by Google Translator

View original text

Why do not the limit stresses when using a nonlinear material match the calculated stresses?

Answer

When calculating nonlinear material models (especially for plastic material models), the calculation is always performed in relation to the original constant internal forces. Therefore, the smoothing of FE elements should be set to "Constant" (see Figure 01).

Furthermore, the stresses are related to the principal stresses $ \ sigma_1 $ or $ \ sigma_2 $.

Even taking these conditions into account, deviations from the defined limit stress may occur. They usually result from the defined solidification modulus. This fact is explained in detail in the technical article, which you can access under Links below.

Keywords

Material Model Nonlinear Plastic Solidification Modulus Nonlinear material

Links

Write Comment...

Write Comment...

  • Views 99x
  • Updated 8 November 2020

Contact us

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

Online-Schulungen | English

RFEM | Basics | USA

Online Training 20 January 2021 12:00 PM - 4:00 PM EST

Online Training | English

RFEM | Basics

Online Training 29 January 2021 8:30 AM - 12:30 PM CET

Online Training | English

RFEM for Students | USA

Online Training 3 February 2021 1:00 PM - 4:00 PM EST

The Most Common User Errors With RFEM and RSTAB

The Most Common User Errors With RFEM and RSTAB

Webinar 4 February 2021 2:00 PM - 3:00 PM CET

Online Training | English

RFEM | Steel | USA

Online Training 16 February 2021 9:00 AM - 12:00 PM EST

Online Training | English

Eurocode 2 | Concrete structures according to DIN EN 1992-1-1

Online Training 19 February 2021 8:30 AM - 12:30 PM CET

Online Training | English

RFEM | Structural dynamics and earthquake design according to EC 8

Online Training 24 February 2021 8:30 AM - 12:30 PM CET

Online Training | English

Eurocode 5 | Timber structures according to EN 1995-1-1

Online Training 17 March 2021 8:30 AM - 12:30 PM CET

Online Training | English

Eurocode 3 | Steel structures according to DIN EN 1993-1-1

Online Training 18 March 2021 8:30 AM - 12:30 PM CET

Online Training | English

RFEM | Dynamics | USA

Online Training 23 March 2021 1:00 PM - 4:00 PM EST

Online Training | English

RFEM | Basics

Online Training 23 April 2021 8:30 AM - 12:30 PM

Online Training | English

Eurocode 3 | Steel structures according to DIN EN 1993-1-1

Online Training 6 May 2021 8:30 AM - 12:30 PM

Online Training | English

Eurocode 2 | Concrete structures according to DIN EN 1992-1-1

Online Training 11 May 2021 8:30 AM - 12:30 PM

Online Training | English

Eurocode 5 | Timber structures according to DIN EN 1995-1-1

Online Training 20 May 2021 8:30 AM - 12:30 PM

Online Training | English

RFEM | Structural dynamics and earthquake design according to EC 8

Online Training 2 June 2021 8:30 AM - 12:30 PM

ADM 2020 Member Design in RFEM

ADM 2020 Member Design in RFEM

Webinar 19 January 2021 2:00 PM - 3:00 PM EST

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