FAQ 003544 EN

Helpful Questions & Answers

  • Frequently Asked Questions (FAQs)

I would like to carry out the flexural buckling design for timber components with imperfections and internal forces according to the second-order analysis. Is it sufficient to activate this in Details of the RF‑/TIMBER Pro add-on module or is it necessary to make additional settings?

Answer

The setting in Image 01 only controls the effect on the design side. After activating this function, the buckling designs in the "Effective Lengths" window are deactivated. Thus, the lateral-torsional buckling analysis is only performed.

In order to calculate with the design values of stiffnesses, it is necessary to reduce them by the partial safety factor according to [1]. For this, select the highlighted option in the calculation parameters (see Image 02).

If using the automatic combinations for the standard EN 1990 + EN 1995, this setting is automatically activated in the combinations for ULS according to the second-order analysis. In the case of the combinations for SLS and the combinations generated according to the linear static analysis, this option is automatically deactivated. However, the combinations are only assigned automatically by using the method of analysis in the "Combination Expressions" tab (see Image 03).

If you want to calculate the component stiffnesses with the 5% quantile value of the stiffness parameters divided by the partial safety factor, you have to additionally activate the "Modify stiffnesses" option in the calculation parameters and modify the stiffnesses manually.

Keywords

Second-order analysis Buckling Second-order analysis Timber structures Second-order analysis

Reference

[1]   Eurocode 5: Design of timber structures - Part 1-1: General - Common rules and rules for buildings; EN 1995-1-1:2010-12

Links

Write Comment...

Write Comment...

Contact us

Contact 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

Online Training | English

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

Online Training 29 July 2021 8:30 AM - 12:30 PM CEST

Online Training | English

RFEM | Structural dynamics and earthquake design according to EC 8

Online Training 11 August 2021 8:30 AM - 12:30 PM CEST

Online-Schulungen | English

RFEM for Students | USA

Online Training 11 August 2021 1:00 PM - 4:00 PM EDT

Online Training | English

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

Online Training 25 August 2021 8:30 AM - 12:30 PM CEST

Online Training | English

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

Online Training 23 September 2021 8:30 AM - 12:30 PM CEST

Glass Design with Dlubal Software

Glass Design with Dlubal Software

Webinar 8 June 2021 2:00 PM - 2:45 PM CEST

Blast Time History Analysis in RFEM

Blast Time History Analysis in RFEM

Webinar 13 May 2021 2:00 PM - 3:00 PM EDT

Timber Structures | Part 2: Design

Timber Beam and Surface Structures | Part 2: Design

Webinar 11 May 2021 2:00 PM - 3:00 PM CEST

Plate and Shell Buckling Utilizing Dlubal Software

Plate and Shell Buckling Utilizing Dlubal Software

Webinar 30 March 2021 2:00 PM - 2:45 PM CEST

CSA S16: 19 Steel design in RFEM

CSA S16:19 Steel Design in RFEM

Webinar 10 March 2021 2:00 PM - 3:00 PM EDT

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 BST

Member design according to ADM 2020 in RFEM

ADM 2020 Member Design in RFEM

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

Dlubal Info Day

Dlubal Info Day Online | 15 December 2020

Webinar 15 December 2020 9:00 AM - 4:00 PM BST

Stability Design in Steel Construction with RFEM and RSTAB

Stability Design in Steel Construction with RFEM and RSTAB

Webinar 1 December 2020 2:00 PM - 2:45 PM BST

FEM - Troubleshooting and Optimization in RFEM

FEA Troubleshooting and Optimization in RFEM

Webinar 11 November 2020 2:00 PM - 3:00 PM EDT

Soil-Structure Interaction in RFEM

Soil-Structure Interaction in RFEM

Webinar 27 October 2020 2:00 PM - 2:45 PM BST

NBC 2015 Modal Response Spectrum Analysis in RFEM

Webinar 30 September 2020 2:00 PM - 3:00 PM EDT

Documenting Results in the RFEM Printout Report

Documenting Results in the RFEM Printout Report

Webinar 25 August 2020 2:00 PM - 2:45 PM CEST

ACI 318-19 Concrete Design in RFEM

Webinar 20 August 2020 2:00 PM - 3:00 PM EDT

How to Be More Productive Using RFEM

How to Be More Productive Using RFEM

Webinar 7 July 2020 3:00 PM - 4:00 PM CEST

Introduction to Solid Modeling \n in RFEM

Introduction to Solid Modeling in RFEM

Webinar 30 June 2020 2:00 PM - 3:00 PM EDT

Modeling with Solids in RFEM

Modeling with Solids in RFEM

Webinar 9 June 2020 3:00 PM - 3:45 PM CEST

CSA A23.3 Concrete Design in RFEM

CSA A23.3:19 Concrete Design in RFEM

Webinar 14 May 2020 2:00 PM - 3:00 PM EDT

What are actions?

What are actions?

Length 2:37 min

}
RFEM
RFEM

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
Structural Frame Analysis Software RSTAB

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
RSTAB
TIMBER Pro

Add-on Module

Timber design according to Eurocode 5, SIA 265 and/or DIN 1052

Price of First License
1,120.00 USD
RFEM
RF-/TIMBER Pro

Add-on Module

Timber design according to Eurocode 5, SIA 265 and/or DIN 1052

Price of First License
1,120.00 USD