若已知n=4,当与裂纹平面垂直的应力为300MPa时,相应的寿命为15 000次。根据Paris定理,在其他条件不变的情况下,求当与裂纹平面垂直的应力增加...

作者: rantiku 人气: - 评论: 0
问题 若已知n=4,当与裂纹平面垂直的应力为300MPa时,相应的寿命为15 000次。根据Paris定理,在其他条件不变的情况下,求当与裂纹平面垂直的应力增加到500MPa时相
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解析 根据Paris定理可知:

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