| 给定置信度下的三参数P-S-N曲线 |
| |
| 引用本文： | 匡卫红,倪侃,张圣坤.给定置信度下的三参数P-S-N曲线[J].上海交通大学学报,2002,36(11):1583-1586. |
| |
| 作者姓名： | 匡卫红 倪侃 张圣坤 |
| |
| 作者单位： | 上海交通大学,船舶与海洋工程学院,上海,200030 |
| |
| 基金项目： | 国家自然科学基金资助项目 (5 960 5 0 10 5 99790 15 ) |
| |
| 摘 要： | 等幅疲劳P-S-N曲线采用三参数幂函数方程形式，利用对数疲劳寿命符合正态分布的特性，可靠度一定时，可借助单侧容限系数给出具有置信度r的对数疲劳寿命，通过最小二乘法拟合来确定P-S-N曲线参数，并采用割线法进行迭代求解，该方法具有迭代收敛快、拟合精度高的特点。
|
| 关 键 词： | 疲劳可靠性 等幅P－S－N曲线 割线法 置信度 |
| 文章编号： | 1006-2467(2002)11-1583-04 |
| 修稿时间： | 2001年11月7日 |
Optimization Method for Fitting Three-Parameters of P-S-N Curve with the Given Confidence under Constant Amplitude Loading |
| |
| KUANG Wei hong,NI Kan,ZHANG Sheng kun.Optimization Method for Fitting Three-Parameters of P-S-N Curve with the Given Confidence under Constant Amplitude Loading[J].Journal of Shanghai Jiaotong University,2002,36(11):1583-1586. |
| |
| Authors: | KUANG Wei hong NI Kan ZHANG Sheng kun |
| |
| Abstract: | An optimization method for fitting the three parameter equation of constant amplitude P-S-N curve was presented. According to the fatigue logarithm life tallys with normal distribution, once given the reliability, the one side tolerance factor can be used to solve the fatigue logarithm life with the confidence level r . The parameters of P-S-N curve can be decided by fitting the data with least square method(LSM), then the solution is got using the iterative secant procedure. It is showed that this new method is accurate as well as fast in convergence. |
| |
| Keywords: | fatigue reliability P-S-N curve secant method confidence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
