Fatigue Life Evaluation of Spot Weldment Using GA and FEM
HS40R and EZNCEN are extensively used as components of vehicle bodies because they satisfy environmental standards and improve fuel ratio. Because vehicle body sheets are becoming thinner and stronger, it is difficult to satisfy the design standards of spot welding joints. This research presents the optimization of the welding condition for various welding variables of a spot welding specimen by genetic algorithm (GA). After obtaining the optimum welding condition by use of the genetic algorithm, the fatigue properties of HS40R and EZNCEN spot welded joints are evaluated by using the finite element method (FEM) to determine the durability and stability of a structure.
Wei Yang, Mamtimin Geni, Tiejun Wang and Zhuo Zhuang
J. K. An et al., "Fatigue Life Evaluation of Spot Weldment Using GA and FEM", Advanced Materials Research, Vols. 33-37, pp. 157-162, 2008