Metal and composite plates can be bonded together to form a joint known as the "single-lap" joint. The single-lap joint is studied under two different loading conditions: (i) out-of-plane load (bending) and (ii) in-plane load (tension). The different joint configurations are studied analytically and experimentally in order to achieve the optimum design. In configurations such as lap joints, the presence of stress singularities eliminates the possibility of using any stress-based failure criteria. A strain energy method is used to predict the strength of adhesively bonded joints because of its convergence with mesh refinement and it is found to be in good agreement with experimental results. Failure of single-lap joints is governed by the load case under consideration and the way in which the stress distribution varies at the joint ends. Failure varies with the taper angle (inner and outer), with or without additional epoxy beads. It is observed that designing the joint for one kind of load will not always be satisfactory because, for other load cases, different parameters will govern the design. It is shown that the optimum design for the single lap joint under bending loads will not be the optimum design for the tension case. Therefore, the optimum design can be chosen in a way that satisfies both loading conditions.
| Identifer | oai:union.ndltd.org:LACETR/oai:collectionscanada.gc.ca:QMM.30245 |
| Date | January 2000 |
| Creators | Golubovic, Adnan. |
| Contributors | Lessard, Larry B. (advisor) |
| Publisher | McGill University |
| Source Sets | Library and Archives Canada ETDs Repository / Centre d'archives des thèses électroniques de Bibliothèque et Archives Canada |
| Language | English |
| Detected Language | English |
| Type | Electronic Thesis or Dissertation |
| Format | application/pdf |
| Coverage | Master of Engineering (Department of Mechanical Engineering.) |
| Rights | All items in eScholarship@McGill are protected by copyright with all rights reserved unless otherwise indicated. |
| Relation | alephsysno: 001762187, proquestno: MQ64221, Theses scanned by UMI/ProQuest. |
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