【摘要】：針對滾動功能部件在其使用過程中的磨損失效等將直接影響其服役性能的問題,為方便高效地獲得滾動功能部件不同時間歷程下的在線監(jiān)測和離線狀態(tài)數(shù)據(jù),提出了一種基于全周期分段步加策略的極小子樣滾動功能部件加速實驗方法.將滾動功能部件沿軸線方向分成n+1個子段,從子段1開始在加載力Fi作用下以速度vi自子段i至子段n往復(fù)跑合zi次,建立了各分段的等效加載力、等效跑合速度、第i個子段單位長度上正常應(yīng)力水平下總的服役時間Ti的計算模型,并搭建了滾動功能部件服役性能加速實驗臺.該加速實驗方法可應(yīng)用于細長軸類零件的服役性能和失效演變機理分析及其壽命和可靠性的預(yù)測評估.
[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.
【作者單位】： 南京理工大學(xué)機械工程學(xué)院;
【基金】：國家自然科學(xué)基金資助項目(51475244) 江蘇省“六大人才高峰”資助項目(2014-ZBZZ-006) 南京理工大學(xué)“卓越計劃”“紫金之星”資助項目(2015-zijin-07)
【分類號】：TG502.3
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本文編號：2129962