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Numerical stress analysis in adhesive joints under thermo-mechanical load using model with special boundary conditions
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap. (Polymeric Composite Materials)ORCID-id: 0000-0002-6995-2558
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap. (Polymeric Composite Materials)ORCID-id: 0000-0002-5210-4341
Luleå tekniska universitet, Institutionen för teknikvetenskap och matematik, Materialvetenskap. (Polymeric Composite Materials)ORCID-id: 0000-0001-9649-8621
2019 (Engelska)Ingår i: 2nd International Conference on Sustainable Engineering Techniques (ICSET 2019)6–7 March 2019, Baghdad, Iraq, Institute of Physics (IOP), 2019, Vol. 3, artikel-id 032061Konferensbidrag, Publicerat paper (Refereegranskat)
Abstract [en]

A numerical study of the adhesive joint 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 major effect 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.

Ort, förlag, år, upplaga, sidor
Institute of Physics (IOP), 2019. Vol. 3, artikel-id 032061
Serie
IOP Conference Series: Materials Science and Engineering, ISSN 1757-8981, E-ISSN 1757-899X ; 518
Nyckelord [en]
Composites, Adhesive joints, Stress distribution, Thermo-mechanical load, Residual thermal stresses, Numerical analysis
Nationell ämneskategori
Kompositmaterial och -teknik Teknisk mekanik
Forskningsämne
Polymera konstruktionsmaterial; Polymera kompositmaterial
Identifikatorer
URN: urn:nbn:se:ltu:diva-74901DOI: 10.1088/1757-899X/518/3/032061ISI: 000489098300149Scopus ID: 2-s2.0-85067803354OAI: oai:DiVA.org:ltu-74901DiVA, id: diva2:1329227
Konferens
2nd International Conference on Sustainable Engineering Techniques (ICSET 2019); 6–7 March 2019; Baghdad, Iraq
Tillgänglig från: 2019-06-24 Skapad: 2019-06-24 Senast uppdaterad: 2020-02-07Bibliografiskt granskad

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Förlagets fulltextScopushttps://iopscience.iop.org/article/10.1088/1757-899X/518/3/032061/pdf

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Al-Ramahi, NawresJoffe, RobertsVarna, Janis

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