一种修正金属材料S-N曲线的新方法探讨
Study on New Correction Method of S-N Curve for Metallic Material
王 帅, 吴运新, 滑广军, 唐宏宾
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作者单位:(中南大学 机电工程学院, 湖南 长沙 410083)
中文关键字:非概率集合理论; 区间分析方法; S-N曲线
英文关键字:no-probability coalition theory; region analysis method; S-N curve
中文摘要:为了准确估算机械结构的疲劳寿命,基于非概率集合理论,提出了修正金属材料S-N曲线的新方法,与经验公式方法和实验概率统计方法相比,新方法客服了概率统计方法需要预先知道大量统计数据的缺点,且计算量小。并利用典型的数值算例进行了计算,结果表明利用新方法修正材料S-N曲线快速,准确。
英文摘要:In order to calculate the exactly fatigue life of mechanical structure, a new correction method of S-N curve of metallic material was discussed based on no-probability coalition theory. Compared with experience formula method and probability statistics method, the new method can overcome the shortcoming of probability statistics witch needs a lot of data, and be calculated simply. An example illustrates that the new method is fast and accuracy.