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不平整路面履帶車(chē)輛動(dòng)力傳動(dòng)系統(tǒng)扭轉(zhuǎn)隨機(jī)激勵(lì)研究
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Torsional Random Excitation of Tracked Vehicle Powertrain System Caused by Road Roughness
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    摘要:

    為計(jì)算分析履帶車(chē)輛傳動(dòng)系統(tǒng)扭轉(zhuǎn)隨機(jī)激勵(lì),，以標(biāo)準(zhǔn)路面不平度統(tǒng)計(jì)特征為基礎(chǔ),，實(shí)現(xiàn)路面激勵(lì)時(shí)頻轉(zhuǎn)換,。同時(shí)分析扭轉(zhuǎn)隨機(jī)激勵(lì)產(chǎn)生機(jī)理,，提出其理論計(jì)算公式,，并且通過(guò)對(duì)相關(guān)部件模型的數(shù)學(xué)抽象,，建立不同路面下履帶整車(chē)動(dòng)力學(xué)模型,。通過(guò)實(shí)例仿真得到某履帶車(chē)輛扭轉(zhuǎn)隨機(jī)激勵(lì)譜,，探討了路面不平度、車(chē)速和預(yù)張緊力對(duì)其產(chǎn)生的影響,。研究結(jié)果表明，路面不平度和車(chē)速是影響扭轉(zhuǎn)隨機(jī)激勵(lì)的主要因素,。

    Abstract:

    To analyze the torsional random excitation of tracked vehicle powertrain system, the road surface excitation was transferred from frequency region to time region based on given the statistical characteristics of road roughness. The root of torsional random excitation was investigated and theoretic calculating formula was proposed. Then the dynamics model of tracked vehicle was constructed under different road surface by abstracting each element of the vehicle mathematically. The torsional random excitation spectrum was numerically calculated. The effects of road roughness, vehicle velocity and pretension having on torsional random excitation were deeply studied. The investigated results indicated that the road roughness and tracked vehicle speed were the main factors to determine the value of torsional random excitation.

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劉輝,符升平,項(xiàng)昌樂(lè).不平整路面履帶車(chē)輛動(dòng)力傳動(dòng)系統(tǒng)扭轉(zhuǎn)隨機(jī)激勵(lì)研究[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(12):1-6. Liu Hui, Fu Shengping, Xiang Changle. Torsional Random Excitation of Tracked Vehicle Powertrain System Caused by Road Roughness[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(12):1-6.

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  • 收稿日期:2009-12-07
  • 最后修改日期:2010-02-05
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