So, it is the new method of researching welded structure fatigue damage process.

因此，它是一种研究焊接结构疲劳损伤过程的新途径。

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Optimization design method of welded structure was put forward with welded joint fatigue damage as constraints.

提出考虑焊接接头疲劳损伤约束的焊接结构抗疲劳优化设计方法。

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The fatigue damage cumulative rule plays a key role on the structure design against fatigue.

疲劳累积损伤分布规律是结构疲劳可靠性分析与设计的关键内容之一。

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