Stress Analysis of Thin Walled Box Section Beam by Spot Welding in Irregular Pitch Under Torsion

摘要

In this study, the theoretical analysis method of shearing force through the spot welding, stresses and deformations around the spot welding on irregular pitch spot welded box section beam which receives the torsion was proposed. In addition, bending-torsion finite element for the spot welded member was proposed using local warping got from the proposed method. Stress analysis and torsional rigidity analysis of adjacency spot welded member were carried out using these techniques. Stresses and torsional rigidity of adjacency spot welded member were clarified, while the effectiveness of this technique was shown by comparing with the results of experiment and finite element method.