| DY共轭梯度法在工程可靠度分析中的应用 |
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| 引用本文： | 姜袁,王乾峰.DY共轭梯度法在工程可靠度分析中的应用[J].三峡大学学报(自然科学版),2006,28(4):309-311. |
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| 作者姓名： | 姜袁 王乾峰 |
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| 作者单位： | 三峡大学,土木水电学院,湖北,宜昌,443002 |
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| 摘 要： | 基于可靠度指标的几何涵义,建立可靠度指标优化模型的目标函数;应用DY共轭梯度法在标准Wolf线搜索条件下全局收敛的特点,计算可靠度指标和验算点;该方法解决了传统方法容易陷入局部最小值的缺点.算例采用自行编制的Matlab程序,并与其他方法的计算结果作了对比.实例表明该方法有效可行.
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| 关 键 词： | 可靠度指标 共轭梯度法 收敛 |
| 文章编号： | 1672-948X(2006)04-0309-03 |
| 修稿时间： | 2006年6月6日 |
Application of DY Conjugate Gradient Method to Reliability Analysis |
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| Jiang Yuan,Wang Qianfeng.Application of DY Conjugate Gradient Method to Reliability Analysis[J].Journal of China Three Gorges University(Natural Sciences),2006,28(4):309-311. |
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| Authors: | Jiang Yuan Wang Qianfeng |
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| Abstract: | Based on the geometric implication of the reliability index,the objective function for optimum design model of reliability index is ebtablished.That the DY conjugate gradient method converges globally provided the line search satisfies the stranded Wolf conditions,is applied to calculate the reliability index and the design calculation verification point.The method can avoid the local minimum value while using the traditional method.A Matlab program for calculating the examples is designed,and contrasting with other methods.The engineering example shows that this method is reliable and accurate. |
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| Keywords: | reliability index conjugate gradient method convergence |
| 本文献已被 CNKI 维普 万方数据 等数据库收录！ |
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