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結(jié)合部靜摩擦因數(shù)修正與定量實(shí)驗(yàn)驗(yàn)證
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國家自然科學(xué)基金資助項(xiàng)目(51275273、51075234)和三峽大學(xué)博士科研啟動(dòng)基金資助項(xiàng)目(KJ2012B013)


Correction of Static Friction Coefficient for Joint Interface and Quantitative Test Confirmation
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    摘要:

    根據(jù)結(jié)構(gòu)函數(shù)給出了分形維數(shù)、分形粗糙度的嚴(yán)密解析解，修正結(jié)合部靜摩擦因數(shù)相關(guān)公式。編寫求解域擴(kuò)展因子的通用Matlab程序，詳細(xì)推導(dǎo)自相關(guān)函數(shù)、功率譜密度函數(shù)和結(jié)構(gòu)函數(shù)的精確解析解。以YK31320型普通滾齒機(jī)上的結(jié)合部為研究對(duì)象，以液體靜壓導(dǎo)軌的實(shí)驗(yàn)結(jié)果為基準(zhǔn)，對(duì)結(jié)合部靜摩擦因數(shù)的理論解進(jìn)行定量驗(yàn)證。驗(yàn)證結(jié)果表明：理論靜摩擦因數(shù)與實(shí)驗(yàn)的絕對(duì)誤差在-0.04502～0.00966之間，理論靜摩擦因數(shù)與實(shí)驗(yàn)的相對(duì)誤差在-30.78%～9.762%之間。

    Abstract:

    The exact analytical solutions to fractal dimension and fractal roughness were put forward through structure function. Some formulas relating to static friction coefficient in joint interface were revised. A universal Matlab program was compiled to attain the domain extension factor. The rigorous analytical expressions for the autocorrelation function, power spectrum density function and structure function were given in detail. Taking a joint interface for example in YK31320 common gear-hobbing machine according to the experimental findings about hydrostatic guideway, the theoretical solution for static friction coefficient in joint interface was quantitatively confirmed. The confirmation results showed that the absolute windage between the theoretical static friction coefficients and the experimental ones fluctuated from -0.04502 to 0.00966, while the relative error between them distributed from-30.78% to 9.762%. 

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田紅亮,劉芙蓉,方子帆,趙春華,朱大林,張發(fā)軍.結(jié)合部靜摩擦因數(shù)修正與定量實(shí)驗(yàn)驗(yàn)證[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2013,44(10):282-293. Tian Hongliang, Liu Furong, Fang Zifan, Zhao Chunhua, Zhu Dalin, Zhang Fajun. Correction of Static Friction Coefficient for Joint Interface and Quantitative Test Confirmation[J]. Transactions of the Chinese Society for Agricultural Machinery,2013,44(10):282-293.

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  • 在線發(fā)布日期: 2013-10-14
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