3451 スポット溶接構造の公称構造応力算出法 : 変位境界条件データ取得法の検討(G03-9 継手・溶接,G03 材料力学)

抄録

To improve the fatigue life prediction technology by CAE, authors proposed the new method to calculate an accurate nominal structural stress value of the spot welding. This method can calculate the nominal structural stress value by using the plate theory when displacements around the spot-welding are given as the boundary condition. However, about the structure spot-welded at corner of plate, the problem that some displacements around the spot-welding cannot be obtained is caused in this method. In this study, in order to solve this problem, the accuracy of the stress solution obtained by this method was studied using the structure to extend the plate.