| 考虑模型性不确定性的应力-强度干涉模型 |
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| 引用本文： | 包洪兵,姚卫星. 考虑模型性不确定性的应力-强度干涉模型[J]. 力学学报, 2008, 40(6): 834-839. DOI: 10.6052/0459-1879-2008-6-2007-411 |
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| 作者姓名： | 包洪兵 姚卫星 |
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| 作者单位： | 南京航空航天大学 飞行器先进设计技术国防重点学科实验室南京航空航天大学 飞行器先进设计技术国防重点学科实验室 |
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| 摘 要： | 传统干涉模型未考虑设计变量的模型性不确定性影响. 通过讨论模型性不确定性的来源，以概率应力-强度干涉模型为基础引入描述模型性不确定性的随机变量H.分析了H的分布形式，并分别给出了大、小样本容量时H分布参数的计算方法，从而建立了考虑模型性不确定性的应力-强度干涉模型，同时给出了可靠性指标beta的算法. 分析结果表明该文提出的干涉模型可以很好地描述模型性不确定性.
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| 关 键 词： | 应力-强度干涉模型 模型性不确定性 贝叶斯法 最大熵原理 可靠性 |
| 收稿时间： | 2007-08-29 |
| 修稿时间： | 2008-02-26 |
STRESS-STRENGTH INTERFERENCE MODEL INCLUDING MODEL UNCERTAINTY |
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| Bao Hongbing , Yao Weixing. STRESS-STRENGTH INTERFERENCE MODEL INCLUDING MODEL UNCERTAINTY[J]. chinese journal of theoretical and applied mechanics, 2008, 40(6): 834-839. DOI: 10.6052/0459-1879-2008-6-2007-411 |
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| Authors: | Bao Hongbing Yao Weixing |
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| Abstract: | Model uncertainty of design variables is investigatedbased on traditional stress-strength interference model in this paper. Modeluncertainty source was first studied and a random variable H was introducedto describe the uncertainty. The distribution of parameter H and itscalculation method H corresponding to different sample sizes were given.Finally, an interval stress-strength interference model with modeluncertainty was developed with.the algorithm of reliability index beta .The results show that the proposed model in the present paper is suitablefor describing the model uncertainty. |
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| Keywords: | Stress strength interference model Model uncertainty Bayesian method Principle of maximum entropy reliability |
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