通过对这种具有“假想弹簧”的半闭口截面构件的研究，提出了一种分析点焊箱型截面薄壁构件的翘曲扭转的新方法。

After a study on this hypothesized spring beam, a method for analyzing warping torsion on spot-welded thin-walled box section beam has been presented.

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在设计汽车骨架等薄壁点焊结构时，必须对薄壁构件焊点的疲劳强度进行精确评估。

In the design of thin-walled spot welding structures such as the automobile body structure, it is necessary to evaluate the fatigue strength of spot welding at the good accuracy.

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