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ISSN: 2321-9939 | ESTD Year: 2013

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Volume 11 | Issue 2
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Paper Title
Lateral torsional buckling Check for facade elements by using FEM analysis
rajan govind,siva subramanian
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.
Keywords- Facade engineering, Lateral torsional buckling, Elastic critical bending moment (Mcr), FEM Analysis
Publication Details
Unique Identification Number- IJEDR2301010
Page Number(s)- 73-82
Pubished in- Volume 11 | Issue 1 | January 2023
E-ISSN Number- 2321-9939
Cite this Article
rajan govind,siva subramanian, "Lateral torsional buckling Check for facade elements by using FEM analysis", International Journal of Engineering Development and Research (IJEDR), ISSN:2321-9939, Vol.11, Issue 1, pp.73-82, January 2023, Available :http://www.ijedr.org/papers/IJEDR2301010.pdf
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