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結(jié)合部法向載荷解析解修正與定量實驗驗證
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三峽大學(xué)青年科學(xué)基金資助項目(ZJX200605)


Modification of Normal Load’s Analytic Solutions for Joint Interface and Quantitative Experimental Verification
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    摘要:

    給出了識別結(jié)合部的2個重要表征參數(shù)(分形維數(shù)和分形粗糙度)的方法，修正了結(jié)合部法向總載荷公式。以XHK5140型自動換刀計算機數(shù)控立式鏜銑床上的結(jié)合部為研究對象，以測試試件的實驗結(jié)果為基準(zhǔn)，按照振型相似定性比較、固有頻率定量比較的原則，對結(jié)合部法向與切向接觸剛度的理論解進行了驗證。理論模型的振型與實驗的振型皆一致，理論與實驗固有頻率的相對誤差在-9%~9%之間。

    Abstract:

    A method to identify such two important characteristic parameters of joint interfaces as fractal dimension and fractal roughness was given. The expression of normal total load in joint interface was modified. A joint interface was selected as an example in XHK5140 automatic tool-changing CNC vertical boring and milling machine tool on the basis of the experimental results about test specimen, the theoretical solutions for normal and tangential contact stiffness were verified in terms of qualitative comparison principle of resembling mode shape and quantitative comparison principle of natural frequencies. The theoretical mode shapes agreed well with the experimental results. The relative errors between the theoretical natural frequencies and the experimental ones are between -9% and 9%.

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田紅亮,朱大林,秦紅玲,林衛(wèi)共.結(jié)合部法向載荷解析解修正與定量實驗驗證[J].農(nóng)業(yè)機械學(xué)報,2011,42(9):213-218. Tian Hongliang, Zhu Dalin, Qin Hongling, Lin Weigong. Modification of Normal Load’s Analytic Solutions for Joint Interface and Quantitative Experimental Verification[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(9):213-218.

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