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臭蜣螂唇基切土減阻的力學(xué)分析
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Mechanical Analysis of Clypeus Surface of Dung Beetle (Copris ochusMotschulsky) in Soil-cutting Resistance Reduction
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    摘要:

    對臭蜣螂頭部的激光三維掃描點云進行簡化處理，在三維坐標系中建立垂直平面截取部分唇基實體，并將其簡化為三面楔模型，進行不同運動方向的受力分析。結(jié)果表明，在臭蜣螂挖土打洞過程中唇基有利的挖土切割方式主要為滑移切割，這種切割方式基于唇基天然的優(yōu)化形狀，即半圓形的刃口形狀和特定的曲面變化。并發(fā)現(xiàn)唇基曲面形狀對減小挖掘阻力具有重要作用。最后分析了臭蜣螂唇基潛在的仿生應(yīng)用，其天然優(yōu)化的形狀和切割角的自動調(diào)節(jié)可指導(dǎo)地面機械的仿生設(shè)計。

    Abstract:

    The 3-D point data of the clypeus surface of the dung beetle (Copris ochus Motschulsky) were simplified, and a 3-section wedge model was used for analyzing the applied force of the half clypeus surface in several directions. It was found that the advantageous mode of the clypeus in soil cut is the sliding cutting as a result of the optimized geometrical configuration of the clypeus of the dung beetle, through evolution over millions of years, which plays an important role in cutting resistance reduction of the clypeus. The potential applications of the clypeus in bionic cutting resistance reduction were analyzed.

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吳娜,張伏,佟金.臭蜣螂唇基切土減阻的力學(xué)分析[J].農(nóng)業(yè)機械學(xué)報,2009,40(10):207-210.Mechanical Analysis of Clypeus Surface of Dung Beetle (Copris ochusMotschulsky) in Soil-cutting Resistance Reduction[J]. Transactions of the Chinese Society for Agricultural Machinery,2009,40(10):207-210.

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