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Fatigue Design of Gas Welded Joint for the Railroad Car Body Using the Hot Spot Stress

机译:基于热点应力的铁路车体气焊接头疲劳设计

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摘要

In order to establish a reasonable and integrated fatigue design criterion for the long life design of the gas welded body structure, stress distribution around the gas welded joints subjected to tensile load was numerically analyzed. And also, the △P-N_f curves were obtained by fatigue tests. By using these results, △P-N_f curves were rearranged in the △σ-N_f relation with the hot spot stress at the welded joint. And a guideline for fatigue design of gas welded joints was proposed.
机译:为了建立合理的综合疲劳设计准则,以对气焊车身结构进行长寿命设计,数值分析了承受拉伸载荷的气焊接头周围的应力分布。并且,通过疲劳试验获得了△P-N_f曲线。利用这些结果,将△P-N_f曲线与焊接接头处的热点应力按△σ-N_f关系重新排列。提出了气焊接头疲劳设计的指导原则。

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