Reliability optimal design is an integrated approach widely adopted in engineering. The fuze components are designed by a BP neural network combined with an optimal design approach based on their multi-failure modes. ...Reliability optimal design is an integrated approach widely adopted in engineering. The fuze components are designed by a BP neural network combined with an optimal design approach based on their multi-failure modes. Their reliability probabilities in multi-failure modes are transformed into deterministic design parameters. The designed results by an example of optimizing the fuze spring under a certain reliability show that the integrated approach is practical and efficient.展开更多
针对车用发动机机械零部件在设计阶段的B10可靠寿命计算问题,分析车用发动机机械零部件的特点及其寿命建模方法,研究基于应力-强度干涉的车用发动机机械零部件失效行为表达方法;以车辆行驶里程为寿命度量指标,建立车用发动机机械零部件...针对车用发动机机械零部件在设计阶段的B10可靠寿命计算问题,分析车用发动机机械零部件的特点及其寿命建模方法,研究基于应力-强度干涉的车用发动机机械零部件失效行为表达方法;以车辆行驶里程为寿命度量指标,建立车用发动机机械零部件的B10可靠寿命计算模型,推导机械零部件的可靠度函数、失效率函数、寿命累积分布函数和寿命概率密度函数以及平均失效里程(Mean kilometer to failure,MKTF)计算模型。研究表明,运用建立的方法及模型,能够结合车用发动机的工作剖面,利用零部件的应力、强度等参数,计算出车用发动机机械零部件的B10可靠寿命、可靠度与失效率随寿命变化规律、寿命概率分布特征以及平均失效里程,可以更好地指导发动机机械零部件的设计、试验、使用等。展开更多
文摘Reliability optimal design is an integrated approach widely adopted in engineering. The fuze components are designed by a BP neural network combined with an optimal design approach based on their multi-failure modes. Their reliability probabilities in multi-failure modes are transformed into deterministic design parameters. The designed results by an example of optimizing the fuze spring under a certain reliability show that the integrated approach is practical and efficient.
文摘针对车用发动机机械零部件在设计阶段的B10可靠寿命计算问题,分析车用发动机机械零部件的特点及其寿命建模方法,研究基于应力-强度干涉的车用发动机机械零部件失效行为表达方法;以车辆行驶里程为寿命度量指标,建立车用发动机机械零部件的B10可靠寿命计算模型,推导机械零部件的可靠度函数、失效率函数、寿命累积分布函数和寿命概率密度函数以及平均失效里程(Mean kilometer to failure,MKTF)计算模型。研究表明,运用建立的方法及模型,能够结合车用发动机的工作剖面,利用零部件的应力、强度等参数,计算出车用发动机机械零部件的B10可靠寿命、可靠度与失效率随寿命变化规律、寿命概率分布特征以及平均失效里程,可以更好地指导发动机机械零部件的设计、试验、使用等。
