Lateral torsional buckling Check for facade elements by using FEM analysis

rajan govind , siva subramanian

Facade engineering, Lateral torsional buckling, Elastic critical bending moment (Mcr), FEM Analysis

In the façade industry, thin-walled aluminum or steel frame elements are used often with slender open cross-sections with low torsional stiffness. It is generally subjected to a complex loading condition where axial, bending, shear, and torsional stresses may act simultaneously. Due to these thin and slender sections, members may fail in buckling even before the yield strength is reached. This effect refers to lateral torsional buckling (LTB), which requires good understanding of structural behavior which requires highly experienced skills and often ignored by practicing façade engineers. Ignoring this effect or checking may lead to either uneconomical design or in some instances unsafe designs. Hence the engineers need to be familiar with the LTB checking, this paper has tried to illustrate a Software based checking and code validation methods. following are overview of this study. • To study the lateral torsional buckling behavior • The importance of LTB check in various façade systems • Work flow as per EN codal analysis to predict the buckling capacity (𝑀!,#$) • Work flow for the Strand7 model & performing the finite element analysis to predict the buckling capacity(𝑀b,Rd) • Case study-1- LTB check comparison between EN Code vs FEM Analysis for minor symmetrical section • Case study-2- LTB check comparison between EN Code vs FEM Analysis for non-symmetrical section • Case study-3-LTB check for Non symmetrical Mullion profiles by using FEM technique (open, Semi-open, Closed) • Results and Discussion based on the results.

Published Paper   E-Certificate

"Lateral torsional buckling Check for facade elements by using FEM analysis", IJEDR - INTERNATIONAL JOURNAL OF ENGINEERING DEVELOPMENT AND RESEARCH (www.IJEDR.org), ISSN:2321-9939, Vol.11, Issue 1, page no.73-82, January 2023, Available :https://rjwave.org/IJEDR/papers/IJEDR2301010.pdf

Volume 11 Issue 1, March-2023

Pages : 73-82

Paper Reg. ID: IJEDR_230057

Published Paper Id: IJEDR2301010

Research Area: Civil Engineering 

Country: Thane (W), Mumbai - 400604, Thane (W), Mumbai - 400604, India

Published Paper PDF: https://rjwave.org/IJEDR/papers/IJEDR2301010

Published Paper URL: https://rjwave.org/IJEDR/viewpaperforall?paper=IJEDR2301010

ISSN: 2321-9939 | IMPACT FACTOR: 9.37 Calculated By Google Scholar | ESTD YEAR: 2013

An International Scholarly Open Access Journal, Peer-Reviewed, Refereed Journal Impact Factor 9.37 Calculate by Google Scholar and Semantic Scholar | AI-Powered Research Tool, Multidisciplinary, Monthly, Multilanguage Journal Indexing in All Major Database & Metadata, Citation Generator

Publisher: IJEDR (IJ Publication) Janvi Wave

This work is licensed under a Creative Commons Attribution 4.0 International License and The Open Definition