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| 1 | Sealing Reliability and Sensitivity Analysis for a Premium Threaded Connection Based on Kriging Model显示文摘In order to analyze the sealing performance of a new designed premium threaded connection,this paper studies the sealing reliability and sensitivity of the premium threaded connection at its most dangerous load condition based on Kriging model.The load condition of premium threaded connection in deep well is so complex that the most dangerous load point of premium threaded connection under the typical series loads is studied by finite element analysis(FEA) method firstly.Since the FEA of the premium threaded connection is too time-consuming,Kriging model which is accurate and efficient for multidimensional and highly nonlinear problems is built to calculate the sealing reliability of the premium threaded connection at the most dangerous load point.Finally,the sealing sensitivity analysis of the premium threaded connection is performed by the method of variance-based global sensitivity analysis.The work in this paper could contribute for the analysis and further improvement of the premium threaded connection. | 郭伟 崔卫民 何勃 刘敬一 宋笔锋 | 2016 | Journal of Donghua University(English Edition)2016，33，5： | 2 |
| 2 | Reliability Analysis of Flexure Hinge Based on Kriging Method显示文摘The uncertainty widely exists in the engineering practice.Therefore,it is necessary to research the effect of uncertainty on the structural system. In this paper,the reliability and sensitivity of the flexure hinge, which is the key component of the compliant mechanisms,are investigated. The results of the reliability analysis can effectively guide the engineer to design and optimize the flexure hinge. In order to improve the calculating efficiency,the kriging method is introduced to estimate the failure probability and reliability sensitivity. | 李贵杰 徐佳 谢朝阳 胡盛勇 | 2016 | Journal of Donghua University(English Edition)2016，33，2： | 0 |
| 3 | Non-probabilistic Hydraulic Turbine Blade Vibration Reliability Research Based on Fuzzy Failure Criterion显示文摘In hydraulic turbine engineering,turbine blade vibration reliability assessment is of great significance. Based on the interval mathematical theory, the variables existing in hydraulic turbine blade are described as interval variables. Considering the fuzzy failure criterion of turbine blade distancing from resonance and vibration fatigue stress,fuzzy possibilistic reliability is expressed and analyzed qualitatively taking normal bathtub function as the membership function of blade resonance failure and deflection major type function as the membership function of the intensity failure. As a result,hydraulic turbine blade vibration reliability is analyzed based on the fuzziness of variables and failure criterion. A safer working environment is provided under possibility context by comparing with the qualitative conclusions in the past literature. | 庞煜 张翔 赖喜德 | 2016 | Journal of Donghua University(English Edition)2016，33，2： | 0 |
| 4 | 齿轮磨损和接触疲劳竞争失效可靠性模型显示文摘为了计算齿轮可靠度,针对磨损失效和疲劳失效2种常见的失效方式,分别建立了失效概率模型,在此基础上计算出可靠度,并考虑了服从泊松过程的冲击对磨损和接触应力的作用。磨损采用累积磨损的形式,建立了磨损-磨损阈值干涉模型。接触疲劳失效考虑随机强度退化,建立了动态强度-应力干涉模型。以某矿用挖掘机提升减速器中的齿轮为研究对象进行可靠性分析,对模型和方法进行验证,得到了考虑冲击作用的2种失效模式竞争的齿轮可靠度计算结果,分析了不同冲击参数下可靠度值。结果表明,模型对于估计寿命、材料选取等工程问题有一定的参考价值。 | 吕昊 姜雨良 金雄程 张义民 | 2023 | 振动.测试与诊断2023，43，3： | 0 |
| 5 | 公路桥梁车辆荷载与效应的统计分析显示文摘研究公路桥梁汽车荷载与效应的统计性质。应用K-S检验法,拟合车辆荷载的载口分布;根据极值分布理论,计算设计使用寿命期的车辆荷载最大值分布;根据结构力学原理,计算简支梁的跨中弯矩效应分布与等效均布荷载分布;计算这些分布的期望、标准差、变异系数和分位值,它们都是桥梁结构可靠度设计的重要统计参数。 | 陈庆华 张凌 | 2019 | 龙岩学院学报2019，37，2： | 0 |
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