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Numerical stress analysis in adhesive joints under thermo-mechanical load using model with special boundary conditions
Luleå University of Technology, Sweden; Middle Technical University, Iraq.
RISE - Research Institutes of Sweden, Materials and Production, SICOMP. Luleå University of Technology, Sweden.ORCID iD: 0000-0002-5210-4341
Luleå University of Technology, Sweden.
2019 (English)In: IOP Conference Series: Materials Science and Engineering, Volume 518, Mechanical and Materials Engineering: Materials Science and Engineering, Institute of Physics Publishing , 2019, no 3Conference paper, Published paper (Refereed)
Abstract [en]

A numerical study of the adhesivejoint made of similar and dissimilar adherends subjected to thermo-mechanical loading is presented. A comprehensive numerical model was used for this purpose with the novel displacement coupling conditions which are able to correctly represent monoclinic materials (off-axis layers of composite laminates). The geometrical nonlinearity as well as nonlinear material model are also taken into account. Three different types of single-lap and double-lap adhesive joints are considered in this study: a) metal-metal; b) composite-composite; c) composite-metal. In case of composite laminates, four lay-ups are evaluated: uni-directional ([08]T and [908]T) and quasi-isotropic laminates ([0/45/90/-45]S and [90/45/0/-45]S). This paper focuses on the parameters which have the majoreffect on the peel and shear stress distribution within adhesive layer at the overlap ends. The comparison of behaviour of single-and double-lap joints in relation to these parameters is made. The master curves for maximum stress (peel and shear) at the ends of the overlap with respect to the bending stiffness and axial modulus of the adherends are constructed by analysing stress distributions in the middle of the adhesive.The main conclusions of this paper are: the maximum peel stress value for SLJ is reduced with increase of the adherend bending stiffness and for DLJ,similar behaviour was observed at the end next to the inner plate corner, while, at the end next to the outer plate corner peel stress is reduced with increase of adherend axial modulus.

Place, publisher, year, edition, pages
Institute of Physics Publishing , 2019. no 3
Keywords [en]
Adhesive joints, Laminated composites, Shear stress, Stiffness, Stress analysis, Stress concentration, Sustainable development, Dissimilar adherends, Geometrical non-linearity, Monoclinic materials, Nonlinear material models, Numerical stress analysis, Quasiisotropic laminates, Thermo mechanical loads, Thermo-mechanical loading, Adhesives
National Category
Natural Sciences
Identifiers
URN: urn:nbn:se:ri:diva-39383DOI: 10.1088/1757-899X/518/3/032061Scopus ID: 2-s2.0-85067803354OAI: oai:DiVA.org:ri-39383DiVA, id: diva2:1335949
Conference
2nd International Conference on Sustainable Engineering Techniques, ICSET 2019, 6 March 2019 through 7 March 2019
Note

Funding text 1: The research leading to these results was financially supported by Middle Technical University (Baghdad, Iraq), by Polymeric Composite Materials group at Luleå University of Technology (Luleå, Sweden) and by the strategic innovation programme LIGHTer provided by Vinnova (Sweden).

Available from: 2019-07-08 Created: 2019-07-08 Last updated: 2019-07-31Bibliographically approved

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