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Geometrical optimization of the overlap in mixed adhesive lap joints

Bavi, O ; Sharif University of Technology | 2013

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  1. Type of Document: Article
  2. DOI: 10.1080/00218464.2013.782813
  3. Publisher: 2013
  4. Abstract:
  5. The aim of this research is to optimize the geometry of the overlap in mixed adhesive single-and double-lap joints using a modified version of Bees and Genetic Algorithms (BA and GA). Accounting for adherends Poisson's ratio in the deduced equilibrium equations, the proposed shear lag model gives a more accurate approximation of joint failure load in comparison with Volkersen's solution. The objective functions used in this work are used separately to maximize the load bearing capacity f and the specific strength (f/w) of the joint. This procedure is applied to optimize aeronautical adhesively bonded assemblies, while taking manufacturing constraints into account. The employed constraints are the application of yield criterion on adherends as well as geometrical constraint on the overlap length. The proposed straightforward procedure provides 18 optimal configurations amid a wide range of changes for optimization variables, among which the designer can take a choice, depending on his/her goal. The efficiency of the two employed algorithms, BA and GA, in searching for the optimum geometrical design of the mixed adhesive joints have also been investigated. The results show the more robust and efficient performance of the modified version of BA over GA in such kinds of engineering problems
  6. Keywords:
  7. Aerospace ; Bees algorithm ; Joint design ; Lap-Shear ; Mixed adhesive joints ; Optimization ; Bees algorithms ; Geometrical constraints ; Geometrical optimization ; Joint designs ; Lap shear ; Manufacturing constraint ; Optimization variables ; Adhesive joints ; Design ; Genetic algorithms ; Geometry
  8. Source: Journal of Adhesion ; Volume 89, Issue 12 , 2013 , Pages 948-972 ; 00218464 (ISSN)
  9. URL: http://www.tandfonline.com/doi/abs/10.1080/00218464.2013.782813#.Vf5--n2D4_4