经高频机械冲击处理的预疲劳焊接 Q235 钢对接接头的疲劳寿命预测

IF 1.1 4区工程技术 Q3 CONSTRUCTION & BUILDING TECHNOLOGY

International Journal of Steel Structures Pub Date : 2024-06-24 DOI:10.1007/s13296-024-00861-4

Tao Li, Chao Zhang, Guotai Huang, Liuyang Feng

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引用次数: 0

摘要

疲劳试验研究了疲劳预载对经过高频机械冲击（HFMI）处理的 Q235B 钢焊接对接接头疲劳寿命的影响。然后，研究了连续两次高频机械冲击处理对提高预疲劳焊接对接接头疲劳寿命的影响。随着疲劳预载循环次数的增加，预疲劳试样的总疲劳寿命降低，而重复两次 HFMI 处理对进一步提高预疲劳试样的疲劳寿命影响不大。最后，根据实验结果，提出了一种双参数方法来估算受冲击预疲劳对接接头的总疲劳寿命。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

Fatigue Life Prediction of Prefatigued Welded Q235 Steel Butt-Joints Treated by High Frequency Mechanical Impact

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Fatigue Life Prediction of Prefatigued Welded Q235 Steel Butt-Joints Treated by High Frequency Mechanical Impact

Fatigue tests were performed to investigate the effect of fatigue preloads on the fatigue life of welded Q235B steel butt-joints treated with high-frequency mechanical impact (HFMI). Then, the effect of two consecutive HFMI treatments on the fatigue life enhancement of prefatigued welded butt joints was investigated. The total fatigue life of prefatigued specimens decreases as the fatigue preload cycles increase and two repeated HFMI treatments have an insignificant effect further to enhance the fatigue life of the prefatigued specimens. Finally, based on the experimental results, a two-parameter approach is proposed to estimate the total fatigue life of the impacted prefatigued butt joints.

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来源期刊

International Journal of Steel Structures 工程技术-工程：土木

CiteScore

2.70

自引率

13.30%

发文量

122

审稿时长

12 months

期刊介绍： The International Journal of Steel Structures provides an international forum for a broad classification of technical papers in steel structural research and its applications. The journal aims to reach not only researchers, but also practicing engineers. Coverage encompasses such topics as stability, fatigue, non-linear behavior, dynamics, reliability, fire, design codes, computer-aided analysis and design, optimization, expert systems, connections, fabrications, maintenance, bridges, off-shore structures, jetties, stadiums, transmission towers, marine vessels, storage tanks, pressure vessels, aerospace, and pipelines and more.