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軸-軸承系統(tǒng)動(dòng)力學(xué)摩擦學(xué)彈性力學(xué)耦合分析
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    摘要:

    采用動(dòng)力學(xué)仿真軟件ADAMS和有限元分析軟件ANSYS，結(jié)合手工編程的方法,，研究了變載荷作用下軸-軸承系統(tǒng)動(dòng)力學(xué),、摩擦學(xué)、彈性力學(xué)（軸的剛度和強(qiáng)度）耦合分析問(wèn)題,，重點(diǎn)討論正弦載荷作用下軸-軸承系統(tǒng)的共振響應(yīng)和考慮動(dòng)態(tài)油膜壓力分布時(shí)的軸頸表面動(dòng)應(yīng)力計(jì)算,。計(jì)算結(jié)果表明，動(dòng)應(yīng)力在軸頸表面沿軸向和周向的分布與油膜壓力沿軸向和周向的分布密切相關(guān),；動(dòng)應(yīng)力隨時(shí)間的變化與軸-軸承系統(tǒng)的動(dòng)力學(xué)響應(yīng)密切相關(guān),。

    Abstract:

    Multidisciplinary coupling among dynamics, tribology and elastic mechanics (strength and stiffness of shaft) on a shaft-bearing system with variable load, was studied in this paper. Special software (ADAMS and ANSYS) assisted with self-designed programs were applied to solve the problem. Dynamic responses of the shaft-bearing system were calculated on sine exciting force, and the relevant dynamic oil pressure distribution was obtained by solving Reynolds' equation according to the trajectories of shaft center. Dynamical stress on journal surface considering the dynamic oil pressure was calculated by the APDL (ANSYS parameter design language). Numerical results showed that dynamic stress distributing on the journey surface is related to the dynamic oil pressure and the variation of stress about time is determined by the dynamic response.

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何芝仙,桂長(zhǎng)林,李震,孫軍.軸-軸承系統(tǒng)動(dòng)力學(xué)摩擦學(xué)彈性力學(xué)耦合分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(9):116-121.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(9):116-121.

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