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基于分形理論的結(jié)合面改進(jìn)接觸模型
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國家自然科學(xué)基金資助項(xiàng)目(50775153)和山西省回國留學(xué)人員科研資助項(xiàng)目(2011-076)


Modified Contact Model of Joint Interfaces Based on Fractal Theory
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    摘要:

    提出了一種基于分形理論的結(jié)合面改進(jìn)接觸模型，并通過對(duì)所建模型的仿真，直觀地揭示了結(jié)合面法向接觸剛度與結(jié)合面法向載荷、結(jié)合面分形維數(shù)D、結(jié)合面分形特征尺度參數(shù)G之間復(fù)雜的非線性關(guān)系。仿真結(jié)果表明，法向接觸剛度隨著法向載荷增大而增大，隨著G的增大而減小，隨著D的變化規(guī)律比較復(fù)雜，同時(shí)表明該模型可以用于結(jié)合面法向接觸載荷和法向接觸剛度的分析與計(jì)算。

    Abstract:

    A modified contact model of joint interfaces based on fractal theory was proposed. Furthermore, numerical simulation was carried out to obtain the complicated nonlinear relations between normal contact stiffness and the normal contact load、the fractal dimension D and the fractal characteristic length scale parameter G. The results showed that the normal contact stiffness increased with the normal load, decreased with G but complicatedly with D. The results showed that the contact model could be used to calculate the normal contact stiffness and the normal load.

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蘭國生,張學(xué)良,丁紅欽,溫淑花,張宗陽,盧青波.基于分形理論的結(jié)合面改進(jìn)接觸模型[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(10):217-223,229. Lan Guosheng, Zhang Xueliang, Ding Hongqin, Wen Shuhua, Zhang Zongyang, Lu Qingbo. Modified Contact Model of Joint Interfaces Based on Fractal Theory[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(10):217-223,229.

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