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基于簡(jiǎn)易輪胎試驗(yàn)?zāi)B(tài)測(cè)試的滾阻特性評(píng)價(jià)方法
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國家重點(diǎn)研發(fā)計(jì)劃項(xiàng)目(2017YFB0103704、2018YFB0104804)


Evaluation of Rolling Resistance Characteristics Based on Simple Tire Experimental Modal Test
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    摘要:

    通過對(duì)現(xiàn)階段評(píng)價(jià)輪胎滾阻特性的總結(jié)及對(duì)輪胎滾阻產(chǎn)生機(jī)理的分析,提出了一種基于簡(jiǎn)易輪胎試驗(yàn)?zāi)B(tài)測(cè)試的滾阻特性評(píng)價(jià)方法,利用半功率帶寬法對(duì)輪胎試驗(yàn)?zāi)B(tài)幅頻特性進(jìn)行計(jì)算,得到不同輪胎的阻尼比,以此評(píng)價(jià)其滾阻特性。試驗(yàn)結(jié)果表明,輪胎試驗(yàn)?zāi)B(tài)幅頻特性的半功率帶寬與其滾動(dòng)阻力有密切關(guān)系,且呈正相關(guān),其半功率帶寬越大,一階共振能量越分散,輪胎滾動(dòng)阻力系數(shù)就越大。該結(jié)果進(jìn)一步表明,不同輪胎的模態(tài)阻尼比與其滾動(dòng)阻力系數(shù)之間具有很好的一致性,輪胎的阻尼比越大,其滾動(dòng)阻力系數(shù)越大。本方法能夠定性評(píng)價(jià)輪胎滾阻特性,從而提高輪胎滾動(dòng)阻力測(cè)試效率,降低測(cè)試成本。

    Abstract:

    Tire rolling resistance has a great impact on the fuel economy of automobiles, accounting for about 20%~30% of the fuel consumption of automobiles. Evaluation of tire rolling resistance had become a difficult problem to solve for the industry. Aiming at the problem of tire rolling resistance testing at the present stage and the mechanism of tire rolling resistance caused by hysteresis effect, a tire rolling resistance evaluation method based on simple experimental modal was proposed. The rolling resistance characteristics of different tire modes were evaluated by calculating different tire modal damping characteristics by using half-power bandwidth method. The experimental results showed that the half-power bandwidth of the different tires amplitude frequency characteristics was closely related to their rolling resistance coefficient and kept positive correlation, the larger the half-power bandwidth of the tire mode amplitude frequency characteristic was, the more dispersed the energy of the first-order resonance energy was, and the larger the tire rolling resistance coefficient was. Furthermore, the experimental results showed that there was good consistency between the modal damping ratio of different tires and tires rolling resistance coefficient. The larger the tire damping ratio was, the larger the tire rolling resistance coefficient was. Therefore, it proved that the method can qualitatively evaluate the tire rolling resistance characteristics, which not only improved the efficiency of tire rolling resistance testing, but also reduced the cost of testing.

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朱成偉,劉洋,莊曄,高學(xué)亮,陳強(qiáng).基于簡(jiǎn)易輪胎試驗(yàn)?zāi)B(tài)測(cè)試的滾阻特性評(píng)價(jià)方法[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2019,50(6):371-378. ZHU Chengwei, LIU Yang, ZHUANG Ye, GAO Xueliang, CHEN Qiang. Evaluation of Rolling Resistance Characteristics Based on Simple Tire Experimental Modal Test[J]. Transactions of the Chinese Society for Agricultural Machinery,2019,50(6):371-378.

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  • 收稿日期:2018-11-22
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  • 在線發(fā)布日期: 2019-06-10
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