| 基于可靠性的含裂纹结构的风险评估方法 |
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| 引用本文： | 卢昊,朱丽莎,张义民.基于可靠性的含裂纹结构的风险评估方法[J].东北大学学报(自然科学版),2010,31(11):1599-1602. |
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| 作者姓名： | 卢昊 朱丽莎 张义民 |
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| 作者单位： | 东北大学,机械工程与自动化学院,辽宁,沈阳110004;东北大学,机械工程与自动化学院,辽宁,沈阳110004;东北大学,机械工程与自动化学院,辽宁,沈阳110004 |
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| 基金项目： | 国家科技重大专项课题，中央高校基本科研业务费资助项目 |
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| 摘 要： | 对于含不确定参数的工程结构,考虑了设计参数与可靠性的关系,根据目标可靠性要求对结构参数进行优化设计,提出了一种基于可靠性的含裂纹结构的风险评估方法.基于分项系数法,建立了设计参数关于目标可靠性指标的校验方程,使得所设计的参数满足需要的可靠性要求.进一步应用所述方法对裂纹扩展导致的结构可靠性问题进行了探讨
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| 关 键 词： | 分项系数 不确定性分析 强度退化 可靠性 裂纹 |
An Approach to Reliability-Based Risk Assessment of Crackable Structures |
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| LU Hao,ZHU Li-sha,ZHANG Yi-min.An Approach to Reliability-Based Risk Assessment of Crackable Structures[J].Journal of Northeastern University(Natural Science),2010,31(11):1599-1602. |
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| Authors: | LU Hao ZHU Li-sha ZHANG Yi-min |
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| Institution: | (1) School of Mechanical Engineering and Automation, Northeastern University, Shenyang 110004, China |
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| Abstract: | For the structures with uncertain parameters, it is essential to finding out the relationship between design parameters and reliability, so as to optimize the design parameters in accordance to the required target reliability index. An approach to the reliability-based risk assessment of crackable structures was therefore proposed. Based on the partial factors, a check formula was derived for the design parameters in relation to the target reliability index, thus enabling the parameters in design to meet the requirement of reliability. Further, the proposed method could be applied to the exploration of the structure reliability problem caused by crack propagation. |
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