| 结构系统疲劳可靠性分析的一阶和二阶混合方法 |
| |
| 引用本文： | 王平,胡毓仁,陈伯真.结构系统疲劳可靠性分析的一阶和二阶混合方法[J].中国造船,1999(4). |
| |
| 作者姓名： | 王平 胡毓仁 陈伯真 |
| |
| 作者单位： | 上海交通大学 |
| |
| 摘 要： | 本文提出了复杂结构系统疲劳可靠性分析的一阶和二阶混合方法。引进Ｈｏｈｅｎｂｉｃｈｌｅｒ等提出的并联系统可靠性分析的二阶渐近式计算失效途径的疲劳失效概率；利用并联系统等效线性安全余量的概念，形成由失效途径的等效失效单元组成的串联系统；并最终计算整个系统的疲劳失效概率。计算结果表明，这一方法能有效地提高结构系统疲劳失效概率的计算精度。
|
| 关 键 词： | 结构系统 疲劳 可靠性 混合方法 |
HYBRID FIRST-ORDER/SECOND-ORDER METHOD FOR FATIGUE RELIABILITY ANALYSIS OF STRUCTURAL SYSTEMS |
| |
| WANG Ping, HU Yuren , CHEN Bozhen.HYBRID FIRST-ORDER/SECOND-ORDER METHOD FOR FATIGUE RELIABILITY ANALYSIS OF STRUCTURAL SYSTEMS[J].Shipbuilding of China,1999(4). |
| |
| Authors: | WANG Ping HU Yuren CHEN Bozhen |
| |
| Institution: | Shanghai Jiaotong University |
| |
| Abstract: | A hybrid first--order/second--order method is proposed for fatigue reliability analysis of complicated structural systems. The second order asymptotic formulation for reliability analysis of parallel systems is employed in calculating the fatigue failure probability of the failure path of the system. An equivalent failure element is derived for a failure path by using the concept of equivalent linear safety magin of the parallel system. Fatigue failure probability of the whole system is calculated by modeling the system as a series system combined of equivalent failure elements. Results show that the proposed hybrid method can effectively improve the accuracy of the calculation. |
| |
| Keywords: | Structural system Fatigue Reliability Hybrid method |
| 本文献已被 CNKI 等数据库收录！ |
