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강문호(Munho Kang),서찬욱(Chanwook Seo),한태경(Taekyung Han),이경식(Gyungsik Lee) 한국자동차공학회 2008 한국자동차공학회 지부 학술대회 논문집 Vol.2008 No.11
The stiffness and the fatigue endurance of lightweight cart for carrying on automotive side panel were examined by investigating the displacement and the stress distribution caused by the force during spot welding. The cart was modeled with Hypermesh and analyzed with ABAQUS. The displacements and stress distributions for six loading conditions, which were determined by combining the forces acting on four different places, were investigated. Some structures whose stiffness was improved by reinforcing the weak point were also proposed. By comparing the fatigue strength data for the welded structures with the stress distributions calculated in this study, the fatigue endurance of the cart was examined.