| 国内外规范中S-N曲线对比分析 |
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| 引用本文： | 吴睿锋.国内外规范中S-N曲线对比分析[J].船舶工程,2017,39(1):55-58. |
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| 作者姓名： | 吴睿锋 |
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| 作者单位： | 海军装备研究院 |
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| 摘 要： | 各国船级社规范中通常采用S-N曲线法对船舶和海洋结构物的疲劳寿命进行计算,不同S-N曲线计算得出的疲劳寿命也有所差异。通过对比国内外船级社和焊接协会的S-N曲线,系统分析了S-N曲线的表达形式、参数、存活率、板厚修正方法及平均应力修正方法等方面的内容,对比了相同焊接型式在S-N曲线选择和疲劳寿命计算上的差异,可以看出不同规范计算所得的疲劳寿命差异较大。通过对相关规范中S-N曲线的共性规律和差异性的对比分析,以期为船舶结构疲劳强度计算提供参考依据。
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| 关 键 词： | S-N曲线 存活率 板厚修正 平均应力修正 |
| 收稿时间： | 2016/11/30 0:00:00 |
| 修稿时间： | 2017/1/4 0:00:00 |
Comparison and Analysis of S-N Curves in Different Standard |
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| Wu Ruifeng.Comparison and Analysis of S-N Curves in Different Standard[J].Ship Engineering,2017,39(1):55-58. |
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| Authors: | Wu Ruifeng |
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| Abstract: | Fatigue life is calculated using S-N curves method in the classification society standard, The fatigue life calculated from different S-N curves have a great difference. The S-N curves of classification society and welding society are compared and analyzed; the expression form, survival rate, plate thickness correction method and mean stress correction method of S-N curves were studied. The differences between the S-N curves and fatigue of the same welding form were compared, the difference is large when using different standard. |
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| Keywords: | S-N curve survival rate plate thickness correction mean stress correction |
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