Design optimisation of automobile welds. (20th February 2004)

• Record Type: Journal Article
• Authors: Wang, Liangsheng; Basu, Prodyot K.; Leiva, Juan Pablo
• Is Part Of: International journal of vehicle design. Volume 31:Number 4(2003)
• Page Start: 377
• Page End: 391
• Publication Date: 2004-02-20
• Subjects: design optimisation -- optimal weld design -- rigidity -- sizing optimisation -- spot weld -- automobile welds; Motor vehicles -- Design and construction -- Periodicals; 629.231
• Languages: English
• ISSNs: 0143-3369

Abstract

This paper presents the design optimisation procedure for the automobile welds based on the sizing optimisation technique. The purpose is to reduce the number of welds and save the cost, while the rigidity requirements are satisfied. A special element is proposed to model the spot weld by a serial combination of a rigid element and a 3-dimensional elastic element. Through the innovative utilisation of optimisation techniques, the optimal weld design is obtained. Furthermore, by using different weld reduction constraints to study critical areas, the relationship between the overall rigidity of an automobile body and the quantity of weld is determined. It is concluded that by using appropriate optimisation schemes as presented, the quantity of weld of an automobile body can be substantially reduced and cost savings can be achieved. The proposed method can be used as guidance in optimising existing or new designs of automobile welds.