International Journal of Engineering Research in Mechanical and Civil Engineering (IJERMCE)

Monthly Journal for Mechanical and Civil Engineering

Volume3,February 2018,

Topic : Failure Analysis of Functionally Graded Adhesively Bonded Tubular Joint under Combination of Axial and Torsional Load

Authors:Davinder Kumar || S.V. Nimje

Abstract:This research deals with finite element based simulation of a functionally graded adhesively bonded tubular joint under combined axial and torsional loading. The tubes are made of Gr/E (T300/934) laminated FRP composites. The research carried out in past indicate high-stress concentration at both ends of overlap. By employing a modulus graded adhesive along the bond line the stress concentration at the ends of overlap can be reduced. This will result in significant increase in strength and lifespan of the adhesively bonded joint. The material gradation of the adhesive along the bond line is achieved by suitable smooth and continuous function profiles with varied modulus ratios. The out-of-plane shear stress and peel stress values have been calculated along the interfacial surfaces of the bond line of the tubular joint. Failure indices have been calculated by using Tsai-Wu coupled stress criterion to predict the failures onset location The critical location has been identified to be between the outer tube and adhesive layer near the loaded end. Results show the significant reduction in the value of failure index at the critical location thus increasing the joint strength and delayed failure onset location with functionally graded adhesive. .

Keywords: Functionally Graded Adhesive, FRP Composite Tubes, Failure Analysis, Combined Loading

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DOI: 01.1617/vol5/iss2/pid51938


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Editor-in-Chief
Meinhard Taher Schobeiri
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Texas A & M University, USA.

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