International Research Journal of Engineering and Technology (IRJET)
e-ISSN: 2395-0056
Volume: 09 Issue: 05 | May 2022
p-ISSN: 2395-0072
www.irjet.net
A Parametric Finite Element Study on Concentrated Load Distribution in Corrugated Steel Decks Arathi Madhusoodanan1, Asha Alice Kulavattam2 1Student,
Dept. of Civil Engineering, St. Joseph’s College of Engineering and Technology, Palai, Kerala, India Professor, Dept. of Civil Engineering, St. Joseph’s College of Engineering and Technology, Palai, Kerala, India ---------------------------------------------------------------------***--------------------------------------------------------------------parameters are critical for achieving adequate prediction Abstract - Corrugated steel decking has been utilized in 2Assistant
accuracy at the lowest possible computing cost, as presented herein. Preliminary studies were undertaken on the B deck (a trapezoid shaped deck having flat flanges), the 2R deck and 3 ½ R decks (re-entrant profiles), as well as the 4½ D and 7½D decks (all of which have been included in the parametric studies) (deep trapezoidal decks with intermediate longitudinal stiffeners in deck top flanges) [1].
construction since around 1784. This is one of the oldest types of cold-formed steel products. Corrugated steel decks are commonly used mostly for building roof tiles and siding because they are strong, light, and simple to install. Several standard corrugated steel decks are generally available for building construction and other usage. There is an increasing tendency of corrugated iron decks being directly subjected to concentrated loads. Mechanical loads, stresses owing to plumbing and electrical elements suspended below the deck, and loads due to posts installed on top of the deck are all forms of concentrated loads. A thorough parametric research utilizing finite element models created in Ansys was done to gain a better knowledge of the performance of corrugated steel decks under concentrated loads. The parametric study investigated the effects of variables such as deck kinds, steel depth, deck span condition, deck span length, and concentrated load along the deck span, concentrated load application to different components of the deck cross sections, and so on the deck's strength and behaviour.
Vitality. V. Degtyarev [1] presented the findings of a parametric finite element analysis of the distribution of concentrated loads in cold formed corrugated steel decks. The parametric investigation was done by using ANSYS software to make finite element analysis. Mesh densities, decking corner radii, and tool geometry imperfection distributions and magnitudes were selected as optimal finite element model parameters based on studies to meet the criteria of accuracy and computational efficiency. Physically nonlinear deck models with elastic-perfectly plastic materials properties were used. The models were geometrically nonlinear because of large deflection effects. Convergence studies were carried out in order to determine the best mesh density based on the accuracy and computing efficiency. Corner radii were also investigated for their effects on elastic buckling loads and maximum concentration loads.
Key Words: Corrugated steel deck, Cold-formed steel, Concentrated load, Finite element analysis, Parametric study
1. INTRODUCTION
V.V. Degtyarev [3] demonstrates the use of ANSYS to construct finite elements of corrugated metal deck in bending. On elastic buckling and ultimate moments of models, as well as their load-deflection curves, the effects of parameters such as shell components, mesh density, corner radius, amount of deck corrugations, appearance of transverse ties, tool geometry imperfection distribution and magnitude, deck boundary conditions, loading type, and stress-strain diagrams were investigated.
In the construction industry throughout the world, corrugated col-formed steel (CFS) which are available in too many shapes and depths are being widely used. National standards might control the structural design of corrugated metal decks in different countries. Some countries have manuals which provide extra information on steel deck design and construction. Despite the widespread use of corrugated metal decks, some aspects such as the design of perforated steel decks, decks with openings, decks under concentrated loads, and built-up deck sections are either not addressed at all or are addressed with significant limitations in design standards and manuals. Recent concerns have been raised about the precision of the direct strength method's flexural strength predictions of many decks’ profiles. Additional research on the strength and structural performance of certain types of corrugated metal decks and steel decks under different loading and support conditions is urgently needed [3]. Several early investigations were undertaken to establish which Finite Element model
© 2022, IRJET
|
Impact Factor value: 7.529
Under focused stresses, local buckling of corrugated metal sheets was investigated [4]. Experimental tests and theoretical research were used to discuss the load carrying capacity and failure form of corrugated steel plates. Trapezoidal shaped thin-walled metallic profiled sheets are used in composites floor building to facilitate quick construction and reduce reinforcement and form work needs in concrete casting [5]. However, early buckling failure of steel sections has also been documented. For composite
|
ISO 9001:2008 Certified Journal
|
Page 170