Fixture layout optimisation based on a non-domination sorting social radiation algorithm for auto-body parts

Yanfeng Xing, Min Hu, He Zeng and Yansong Wang

International Journal of Production Research, 2015, vol. 53, issue 11, 3475-3490

Abstract: Auto-body compliant parts are easily deformed during clamping and welding, and fixture layout is very important to the final product quality. However, it is very difficult to design fixture layout because it needs to synchronously satisfy the requirements of assembly tolerance and gravity deformation, which are calculated by finite element analysis. This paper proposes a new method to optimise fixture scheme by a non-domination sorting social radiation algorithm (NSSRA). Firstly, unfeasible nodes are eliminated by four rules according to manufacturing experiences. Afterwards, a few groups are divided based on positions of all feasible nodes. N groups are optimised using NSSRA. Finally, the best fixture layout is generated by selecting the feasible points among the optimal groups in last step. A case study of inner hood is used to illustrate the proposed method, and the results suggest that NSSRA has better efficiency and higher accuracy than NSGA-II.

Date: 2015
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DOI: 10.1080/00207543.2014.1003662

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