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基于坐標(biāo)變換的玉米根茬三維模型建立
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國家高技術(shù)研究發(fā)展計(jì)劃(863計(jì)劃)資助項(xiàng)目（2009AA043604）


3-D Modeling of Corn Root Based on the Coordinate Transformation
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    摘要:

    提出了一種將玉米根茬結(jié)構(gòu)離散化為多段根節(jié)，根據(jù)實(shí)測統(tǒng)計(jì)參數(shù)，以坐標(biāo)變換為理論基礎(chǔ)創(chuàng)建玉米根茬隨機(jī)三維模型的方法。創(chuàng)建模型過程中，采用NURBS曲線擬合的方法處理實(shí)測數(shù)據(jù)，分別以NURBS曲線和NURBS曲面進(jìn)行形態(tài)創(chuàng)建和表面創(chuàng)建。以Matlab軟件、三維CAD軟件為工具，以IGES文件為接口將創(chuàng)建的玉米根茬模型導(dǎo)入三維CAD軟件和有限元分析軟件。所建模型可用于玉米根茬力學(xué)性能分析研究。

    Abstract:

    Corn root is separated into a series of root elements. According to the statistical measured parameters, the random 3-D model of corn root was constituted based on coordinate transformation. In the model building, the measured data was fitted to NURBS curve, shape and surface of the model were expressed by NURBS curve and NURBS surface respectively. Matlab and 3-D CAD software were used as main tools. The model was saved in IGES file format which can be import into 3-D CAD software and FEA software for further analysis of mechanical properties of the corn root. The corn root modeling method is different in principle from the other existed methods and has great significance for mechanical analysis of the root system in the crop root treatment, plants reinforcement of soil and etc.

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王繼利,賈慶祥,楊新義.基于坐標(biāo)變換的玉米根茬三維模型建立[J].農(nóng)業(yè)機(jī)械學(xué)報(bào),2011,42(11):158-163. Wang Jili, Jia Qingxiang, Yang Xinyi.3-D Modeling of Corn Root Based on the Coordinate Transformation[J]. Transactions of the Chinese Society for Agricultural Machinery,2011,42(11):158-163.

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