| 具有局部应力集中的机械零件结构可靠性分析 |
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| 引用本文： | 郑建校,张义民,原思聪. 具有局部应力集中的机械零件结构可靠性分析[J]. 机械设计与制造, 2011, 0(7) |
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| 作者姓名： | 郑建校 张义民 原思聪 |
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| 作者单位： | 1. 西安建筑科技大学,机电工程学院,西安,710055
2. 东北大学,机械工程与自动化学院,沈阳,110004 |
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| 基金项目： | 陕西省自然科学基金资助项目(2007E218) |
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| 摘 要： | 针对具有局部应力集中的机械零件对实际工程结构的损害问题,采用神经网络技术模拟基本随机变量和应力集中系数之间的关系,能够直接获得应力集中系数的显性表达式。在这个基础上,将神经网络技术获得的应力集中系数的显性表达式和可靠性理论相结合,解决应力集中情况下的机械零件结构可靠性问题。结果表明:模拟得到的应力集中系数显性表达式能够直接应用到机械零件的可靠性分析中,获得可靠性计算结果。这将为工程结构的可靠性分析提供了理论依据,而且提出了机械零件结构可靠性分析的新方法。
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| 关 键 词： | 局部应力集中 神经网络 可靠性理论 应力集中系数 显性表达式 可靠性分析 理论依据 |
Structure reliability analysis for mechanical components with local stress concentrations |
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| ZHENG Jian-xiao,ZHANG Yi-min,YUAN Si-cong. Structure reliability analysis for mechanical components with local stress concentrations[J]. Machinery Design & Manufacture, 2011, 0(7) |
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| Authors: | ZHENG Jian-xiao ZHANG Yi-min YUAN Si-cong |
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| Affiliation: | ZHENG Jian-xiao1,ZHANG Yi-min2,YUAN Si-cong1(1Mechanical and Electrical College,Xi'an university of Architecture and Technology,Xi'an 710055,China)(2School of Mechanical Engineering &Automation,Northeastern University,Shenyang 110004,China) |
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| Abstract: | Aimed at the damage problem of the practical engineering structure brought by mechanical components with local stress concentrations,neural network(NN)technique has been adopted to simulate the relationship between the basic random variables and the stress concentration factors(SCF)so that an explicit expression of the stress concentration factors can be obtained directly.On the basis of this,the explicit expression of the stress concentration factors given by NN technique is combined with the reliability t... |
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| Keywords: | Local stress concentration Neural network Reliability theory Stress concentration factors Explicit expression Reliability analysis Theoretical foundation |
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