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懸架橡膠件對(duì)汽車平順性影響的多體動(dòng)力學(xué)分析
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    摘要:

    應(yīng)用有限元分析了汽車減振器橡膠支撐件的彈性特性, 在此基礎(chǔ)上,應(yīng)用SIMPACK軟件建立了整車多體動(dòng)力學(xué)模型,分析了橡膠支撐件的剛度、阻尼對(duì)汽車行駛平順性的影響。分析結(jié)果表明:在車身共振區(qū),橡膠件對(duì)地板加速度功率譜影響較小,但在4~13 Hz中頻區(qū),即人體比較敏感的范圍內(nèi),橡膠件可以使地板加速度功率譜峰值減小6.5%~25.4%,因此懸架橡膠件對(duì)汽車行駛平順性有明顯的改善。此外,還得出對(duì)于剛度較大的橡膠件應(yīng)選取較小阻尼,對(duì)于較軟的橡膠件,可以忽略阻尼影響的結(jié)論。

    Abstract:

    Based on the analysis of elasticity of rubber elements with FEM, the multi-body dynamic model for whole car has been established by using SIMPACK software. The detailed analysis result showed that the stiffness and damping of rubber elements had less effectiveness on the PSD of floor vibration acceleration in body resonance range and reduced peak value of floor acceleration from 6.5% to 25.4% in frequency of 4~13 Hz, therefore, the rubber elements had noticeable improvement on ride comfort. In addition, the less damping should be elected for harder rubber elements and the damping could be neglected for soft rubber elements. 

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張立軍,李剛.懸架橡膠件對(duì)汽車平順性影響的多體動(dòng)力學(xué)分析[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2007,38(12):16-19.[J]. Transactions of the Chinese Society for Agricultural Machinery,2007,38(12):16-19.

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