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鼴鼠爪趾幾何結(jié)構(gòu)量化特征分
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Characteristic Features of Geometric Structures of Claws of Mole Rat
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    摘要:

    土壤洞穴動(dòng)物鼴鼠具有極高的挖掘效率，前足爪趾是其主要挖掘器官,。分析了鼴鼠中重要種屬——麝鼴（Scaptochirus moschatus）具有優(yōu)良挖掘功能的前足爪趾的幾何結(jié)構(gòu)特征，重點(diǎn)分析了前足爪趾觸土面的幾何結(jié)構(gòu),。利用體視顯微鏡觀察分析前足爪趾的宏觀幾何結(jié)構(gòu),，通過逆向工程技術(shù)獲取爪趾三維數(shù)據(jù)點(diǎn)云進(jìn)行特征曲線量化分析，求得前足爪趾特征輪廓線的曲率及二階導(dǎo)數(shù)的變化規(guī)律：鼴鼠爪趾縱向輪廓曲率變化較小,，爪趾縱向表面平順,，保證了挖掘出的洞道內(nèi)壁的平整；橫向輪廓曲線曲率變化較大,，且橫向輪廓線尖端彎曲小,，中后端彎曲大，這種結(jié)構(gòu)使爪趾更易入土和擴(kuò)洞,。

    Abstract:

    Mole rat, as a typical soil-burrowing animal, has a high working efficiency in digging hole in earth,，its fore claws are main digging organ. The geometric characteristics of the claws of mole rats(Scaptochirus moschatus) was analyzed by stereoscopy, the quantitative analysis of geometrically characteristic features of the surfaces was performed by reverse engineering, and the second derivative and curvature of the surface profile curves were calculated. The curvature variation of longitudinal profile of claw changes gently and the longitudinal surface was smooth, which assures the tidiness of inner wall when mole rat dug holes. The curvature variation of transverse fitted curves shows a rapid change, and the bending of the transverse fitted curves increase from tip to rear, this kind of structure is easier for cutting in and hole-enlarging. The results provide some information for the design of the soil-cutting tools and excavation tools in energy-saving property and cutting efficiency.

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汲文峰,佟金,賈洪雷,陳東輝,劉財(cái)勇.鼴鼠爪趾幾何結(jié)構(gòu)量化特征分[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2010,41(4):193-198. Characteristic Features of Geometric Structures of Claws of Mole Rat[J]. Transactions of the Chinese Society for Agricultural Machinery,2010,41(4):193-198.

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