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首页> 外文期刊>Journal of Engineering & Applied Sciences >Reliability Estimation of Machine Parts with Complicated Geometry on a Base of Methods of Nonparametric Statistics
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Reliability Estimation of Machine Parts with Complicated Geometry on a Base of Methods of Nonparametric Statistics

机译：具有复杂几何的机器部件可靠性估计在非参数统计方法基础上的复杂几何

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摘要

The study considers the durability estimation task of details with complicated geometrical shape working in random regime at operation. The analytical dependences for stress-strain condition calculation of machines part and units do not exist, therefore estimation of the stresses and displacements of such objects is possible to carry out only by computer simulation with the help of numerical methods: Finish Element Method (FEM). External loads to details (pressure and temperature) are random values and generally aren't described by known laws of distribution. Researchers have developed the original algorithm for estimation of probability of no-failure operation of details based on use of the apparatus of nonparametric statistics. Adjustment of nonparametric generators of random numbers is realized by methods of nonparametric statistics in accordance with real samples of pressure and temperature. As a result of realization of multiple-factor, computer experiment for calculation the stress-strain condition of detail under random loading the functions approximating the stress variation in dangerous points depending on the loads level are determined. On the basis of these functions, the estimation of probability of no-failure operation in all dangerous points of a detail is carried out. The algorithm developed by researchers is shown on the example of durability estimation (probability of no-failure operation) of the body of wedge valve KZ13010-100.
机译：该研究考虑了在操作中随机制度工作的复杂几何形状细节的耐用性估算任务。对机器部件和单位的应力 - 应变条件计算的分析依赖性不存在，因此可以仅通过数值方法的帮助来执行这些物体的应力和位移，仅通过计算机模拟来执行：完成元件方法（FEM） 。对细节（压力和温度）的外部负载是随机值，并且通常不通过已知的分布定律来描述。基于使用非参数统计装置，研究人员开发了估计无限制的无故障操作概率概率算法。根据真正的压力和温度样本，通过非参数统计方法来实现随机数的非参数发生器的调整。作为实现多因素的结果，计算用于计算随机加载下细节的应力 - 应变条件的计算机实验，确定根据负载电平的危险点的应力变化的功能。在这些功能的基础上，进行了详细信息所有危险点中无故障操作的概率估计。研究人员开发的算法显示在楔形阀KZ13010-100主体的耐久性估计（无故障操作概率）的示例上。

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