本文選題：球軸承 + 局部故障��； 參考：《振動(dòng).測(cè)試與診斷》2017年04期

【摘要】：在分析球與不同邊緣形態(tài)的局部故障之間接觸關(guān)系的基礎(chǔ)上,根據(jù)赫茲接觸理論建立了球與局部故障光滑圓柱型邊緣之間的接觸剛度模型,以及球進(jìn)入故障區(qū)域時(shí)的時(shí)變位移激勵(lì)模型�？紤]彈性流體動(dòng)力潤(rùn)滑油膜的影響,提出時(shí)變沖擊激勵(lì)耦合的球軸承圓弧邊緣型局部故障動(dòng)力學(xué)模型。該模型考慮了故障邊緣形態(tài)特征變化引起的球進(jìn)入故障時(shí)的時(shí)變額外位移激勵(lì),以及球與故障邊緣之間的時(shí)變接觸剛度。研究滾道表面圓弧型邊緣型局部故障激勵(lì)下的球軸承振動(dòng)響應(yīng)特征,并分析故障邊緣形態(tài)變化對(duì)球軸承振動(dòng)響應(yīng)特征的影響規(guī)律,解決了尖銳邊緣型局部故障模型無法描述其邊緣形態(tài)變化的問題,為獲得可靠的局部故障球軸承的動(dòng)力學(xué)響應(yīng)特征提供新的手段和方法,也為球軸承局部故障的準(zhǔn)確識(shí)別與定量診斷提供一定的理論依據(jù)。
[Abstract]:Based on the analysis of the contact relationship between the ball and the local faults with different edge shapes, the contact stiffness model between the sphere and the smooth cylindrical edge of the local fault is established according to Hertz contact theory. And the time-varying displacement excitation model when the ball enters the fault area. Considering the influence of elastic hydrodynamic lubricating oil film, a local fault dynamic model of circular arc edge of ball bearing is proposed. The model takes into account the time-varying extra displacement excitation when the ball enters the fault and the time-varying contact stiffness between the ball and the fault edge caused by the change of the shape characteristics of the fault edge. The vibration response characteristics of ball bearing subjected to local fault excitation of raceway surface arc type edge type are studied, and the influence of fault edge shape change on ball bearing vibration response characteristics is analyzed. It solves the problem that the sharp edge local fault model can not describe the change of its edge shape, and provides a new method and method for obtaining reliable dynamic response characteristics of local fault ball bearings. It also provides some theoretical basis for accurate identification and quantitative diagnosis of local faults of ball bearings.
【作者單位】： 重慶大學(xué)機(jī)械傳動(dòng)國(guó)家重點(diǎn)實(shí)驗(yàn)室;重慶大學(xué)機(jī)械工程學(xué)院;
【基金】：國(guó)家自然科學(xué)基金資助項(xiàng)目(51605051,51475053) 中央高校基本科研業(yè)務(wù)費(fèi)專項(xiàng)資金資助項(xiàng)目(106112015CDJXY110007)
【分類號(hào)】：TH133.33

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本文編號(hào)：1962321