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采用基于断裂力学的Walker裂纹扩展公式代替Verity方法中的Paris公式，得到一种新的考虑了平均应力影响的等效结构应力Sg.焊接结构中存在着高值残余应力，平均应力对于焊接接头的疲劳寿命影响不显著，但对于非焊接缺口件，平均应力的影响是显著的.
铝合金缺口件疲劳寿命预测新方法研究
【摘 要】
：
采用基于断裂力学的Walker裂纹扩展公式代替Verity方法中的Paris公式，得到一种新的考虑了平均应力影响的等效结构应力Sg.焊接结构中存在着高值残余应力，平均应力对于焊接接头的疲劳寿命影响不显著，但对于非焊接缺口件，平均应力的影响是显著的.
【机 构】
：
大连交通大学交通运输学院,大连116028
【出 处】
：
2013年国际焊接结构疲劳断裂学术会议
【发表日期】
：
2013年1期
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