考虑安装预载荷的结构应力概念焊接钢紧固件疲劳强度评定

IF 2.5 4区材料科学 Q2 METALLURGY & METALLURGICAL ENGINEERING

Welding in the World Pub Date : 2025-04-23 DOI:10.1007/s40194-025-02018-1

A. Jöckel, J. Baumgartner, B. Möller, M. Timmermann, H. T. Beier, P. Yadegari

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引用次数: 0

摘要

该文件对各种工程应用中使用的焊接紧固件，特别是螺栓和螺母的疲劳强度评估进行了全面的调查。建立了考虑安装预载荷和焊接过程残余应力影响的结构应力概念疲劳强度评估方法。利用开发的方法，所有被研究的变体的疲劳强度可以用1:2的散点来评估。试验结果表明，预载力的早期减小对疲劳强度有不利影响。虽然预载荷力可以提高疲劳强度，但必须避免在使用载荷期间预载荷的减少，以确保安全使用寿命。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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Fatigue strength assessment of welded steel fasteners using structural stress concept with consideration of the mounting pre-load

The document presents a comprehensive investigation into the fatigue strength assessment of welded fasteners, specifically bolts and nuts, used in various engineering applications. A fatigue strength assessment approach using a structural stress concept is established, accounting for the influence of mounting pre-loads and residual stresses from the welding process. With the developed approach, the fatigue strength of all investigated variants can be assessed with a scatter of 1:2. The experimental investigations showed that an early decrease in pre-load forces negatively affects the fatigue strength. While pre-load forces can enhance fatigue strength, a reduction in pre-load during service loading must be avoided to ensure a safe life.

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来源期刊

Welding in the World METALLURGY & METALLURGICAL ENGINEERING-

CiteScore

4.20

自引率

14.30%

发文量

181

审稿时长

6-12 weeks

期刊介绍： The journal Welding in the World publishes authoritative papers on every aspect of materials joining, including welding, brazing, soldering, cutting, thermal spraying and allied joining and fabrication techniques.