驯鹿足底非规则特征形貌数学模型构建及验证

发布时间：2018-02-12 01:08

  本文关键词： 仿生 模型 计算机仿真 逆向工程 驯鹿足底特征　出处：《农业工程学报》2017年08期 　论文类型：期刊论文

【摘要】：为攻克常规防滑轮胎在冰面上通过性低的难题,以驯鹿足为仿生原型,对驯鹿足底特征形貌进行分析。该文通过逆向工程技术,将驯鹿足单个足底划分为内、外侧边缘曲线、脊线凹槽面和足跟凸冠面4个典型部位。运用1st Op软件和MATLAB软件对特征部位拟合并构建数学模型,利用X射线能谱仪对驯鹿足底特征部位进行元素分析。内、外侧边缘曲线方程的决定系数R~2分别为0.994、0.992;脊线凹槽面和足跟凸冠面曲面方程的R~2分别为0.96、0.98。通过模型验证发现,模型拟合值与实际值的相对误差均值在5%以下,实现了驯鹿足底特征形貌从生物模型到数学模型的转化。能谱分析结果表明驯鹿足底除含有大量的碳、氧及氮元素外,硫、硅、铁、铝、钙5种元素含量较高,并且不同部位的元素存在差别。该研究可为工程仿生技术应用于冰路面行驶车辆胎面设计提供新的研究方向和参考依据。
[Abstract]:In order to overcome the problem that the conventional non-skid tire has low transmissivity on the ice surface, the characteristic morphology of the sole of reindeer foot is analyzed by using reindeer foot as bionic prototype. In this paper, the single sole of reindeer foot is divided into inner and outer edge curves by reverse engineering. Four typical parts of ridge grooves and calcaneal protrusions were constructed using 1st Op software and MATLAB software to construct mathematical model of characteristic parts, and elemental analysis of characteristic parts of sole of reindeer was carried out by X-ray energy spectrometer. The determination coefficient of the lateral edge curve equation is 0.994 / 0.992, and the rout _ 2 of the ridge groove surface and heel crown surface equation is 0.96 ~ 0.98 respectively. It is found that the relative error between the model fitting value and the actual value is less than 5%, through the verification of the model, the relative error between the model fitting value and the actual value is less than 5%. The transformation of reindeer sole features from biological model to mathematical model was realized. The results of energy spectrum analysis showed that in addition to a large number of carbon, oxygen and nitrogen elements, sulfur, silicon, iron, aluminum and calcium were higher in the sole of reindeer. The research can provide a new research direction and reference for the application of Yu Bing pavement tread design.
【作者单位】： 吉林大学工程仿生教育部重点实验室;
【基金】：国家自然科学基金资助项目(51275199) 陆军及通用武器装备技术革新项目(2014220101001105)
【分类号】：TB17;U463.341
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