摘 要：为了评估某客车焊接结构的疲劳性能，给出了基于IIW标准进行焊接结构疲劳损伤计算的方法和流程。该方法使用的S-N曲线考虑了焊接结构细节和工艺的影响。结果表明，损伤最大的测点出现在推力杆支座附近，对结构损伤最大的路面是振动路，与工程经验相符。
关键词：客车焊接结构；IIW标准；疲劳损伤
中图分类号：U461.7 文献标志码：A DOI：10.15917/j.cnki.1006-3331.2025.01.007
Fatigue Damage Analysis of Bus Welded Structure Based on IIW Standard
GUO Fusen
Abstract: To evaluate the fatigue performance of a bus's welded structure, the author presents a method and process for calculating the fatigue damage of the welded structure based on the IIW standard.This method employs the S-N curves which consider the effects of details and processes of the welded structure.The results indicate that the maximum fatigue damage occurs in the vicinity of the thrust rod supports and that vibrating road surfaces induce the most significant fatigue damage to the structure.These conclusions align with engineering experience.
Key words: bus welded structure; IIW standard; fatigue damage
