International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 08 | Aug 2022
p-ISSN: 2395-0072
www.irjet.net
Numerical analysis of connectors in cold formed steel beams for the modular building system Farsana K., Anjali sudhakar 1M.TECH.
(Structural Engineering) Student, Dep. of civil Engineering, Younus Collage of Engineering and Technology, Kollam, Kerala, India 2Assistant professor, Dept. Of Civil Engineering , Younus Collage of Engineering and Technology, Kollam, Kerala, India ---------------------------------------------------------------------***---------------------------------------------------------------------
Abstract – Recently, using of Cold-formed steel sections in construction have shown rapid growth due to their lightness, high strength and stiffness .They offers easy construction and faster erection. This paper aims to investigate the structural efficiency of modular building beams with innovative sigma sections. The sigma sections have high strength-weight ratios as compared to others. In this study, innovative sigma connectors placed in beams of the modular building and analyze it. Here taken the three sigma sections such as open flange sigma (sigma-1) , closed flange sigma(sigma-2) , closed super sigma(sigma-3) . Moreover, the connectors made up of composite steel–CFRP material and again analyze the building structure. Then comparing the results and optimized section placed into the building
Workbench 2022. Material ``properties and section dimensions are discussed below.
Poisson’s ratio
=0.48
Key Words: Cold-formed sections, ANSYS, optimization,
Density
=9.27x106 kgmm-3
CFRP, Steel, sigma sections, numerical analysis
Thermal conductivity = 6.05 x10-2
1. INTRODUCTION
2.2 section properties
Cold-formed steel members are widely used in the construction industry. These CFS sections are thin and light-weight. There erection and installation procedure is very easy and transportation cost is lower as the lightweight sections are available. Being light weight and able to provide high performance structurally, cold-formed steel sections are suitable for building construction. With thickness ranges from 1.2 mm to 3.2 mm and yield strength of from 250 to 450 N/mm2.There are mainly design recommendations of cold-formed steel sections available for application in building constructions such as AISI and Euro code 3: PART 1.3. light steel framing is referred to as steel frame building constructed with galvanized coldformed steel sections as one of the industrialized building systems ,light steel framing has become a popular construction choice in low to medium rise building and residential house construction.
Section is made up of steel and steel-CFRP composite. Here three innovative models of sigma sections such as open sigma section, closed super sigma section, closed flange super sigma sections are used for the analysis.
2.1 Material Properties Steel consist of following properties. Poisson s ratio = 0.3 Yield strength =450MPa Young’s modulus =2 x1011Nm-2 Steel-CFRP composite consist of following properties.
2. MODELLING OF SPECIMENS The connector of various sigma sections are taken from European Standard EN 1993-1.Eurocode 3: Design of steel structures: part 1-3.The model was formed in ANSYS
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