基于全周期分段步加的极小子样加速实验方法
发布时间：2018-07-17 14:41
【摘要】：针对滚动功能部件在其使用过程中的磨损失效等将直接影响其服役性能的问题,为方便高效地获得滚动功能部件不同时间历程下的在线监测和离线状态数据,提出了一种基于全周期分段步加策略的极小子样滚动功能部件加速实验方法.将滚动功能部件沿轴线方向分成n+1个子段,从子段1开始在加载力Fi作用下以速度vi自子段i至子段n往复跑合zi次,建立了各分段的等效加载力、等效跑合速度、第i个子段单位长度上正常应力水平下总的服役时间Ti的计算模型,并搭建了滚动功能部件服役性能加速实验台.该加速实验方法可应用于细长轴类零件的服役性能和失效演变机理分析及其寿命和可靠性的预测评估.
[Abstract]:The wear and tear failure of the rolling functional components will directly affect the service performance of the rolling functional components. In order to obtain the on-line monitoring and off-line state data of the rolling functional components in different time history conveniently and efficiently, an accelerated experiment side for the minimal subsample rolling functional components based on the full cycle piecewise stepping strategy is proposed. Method. The rolling functional components are divided into n+1 subsections along the axis direction. From the sub section 1, the speed VI from the sub segment I to the subsection n is run and Zi under the loading force Fi, and the equivalent loading force, the equivalent running speed, the total service time Ti of the normal stress in the unit length of the subsection of the I sub section are set up, and the construction of the calculation model of the total service time is set up. This method can be applied to the analysis of the service performance and failure evolution mechanism of slender shaft parts and the prediction and evaluation of life and reliability.
【作者单位】： 南京理工大学机械工程学院;
【基金】：国家自然科学基金资助项目(51475244) 江苏省“六大人才高峰”资助项目(2014-ZBZZ-006) 南京理工大学“卓越计划”“紫金之星”资助项目(2015-zijin-07)
【分类号】：TG502.3
，
本文编号：2129962
[Abstract]:The wear and tear failure of the rolling functional components will directly affect the service performance of the rolling functional components. In order to obtain the on-line monitoring and off-line state data of the rolling functional components in different time history conveniently and efficiently, an accelerated experiment side for the minimal subsample rolling functional components based on the full cycle piecewise stepping strategy is proposed. Method. The rolling functional components are divided into n+1 subsections along the axis direction. From the sub section 1, the speed VI from the sub segment I to the subsection n is run and Zi under the loading force Fi, and the equivalent loading force, the equivalent running speed, the total service time Ti of the normal stress in the unit length of the subsection of the I sub section are set up, and the construction of the calculation model of the total service time is set up. This method can be applied to the analysis of the service performance and failure evolution mechanism of slender shaft parts and the prediction and evaluation of life and reliability.
【作者单位】： 南京理工大学机械工程学院;
【基金】：国家自然科学基金资助项目(51475244) 江苏省“六大人才高峰”资助项目(2014-ZBZZ-006) 南京理工大学“卓越计划”“紫金之星”资助项目(2015-zijin-07)
【分类号】：TG502.3
，
本文编号：2129962
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