基于虾夷扇贝体表结构的玉米茬根捡拾器仿生设计

doi:10.13229/j.cnki.jdxbgxb201704025

吉林大学学报(工学版) ›› 2017, Vol. 47 ›› Issue (4): 1185-1193.doi: 10.13229/j.cnki.jdxbgxb201704025

基于虾夷扇贝体表结构的玉米茬根捡拾器仿生设计

陈东辉^{1, 2}, 刘伟^{1, 2}, 吕建华^{1, 2}, 常志勇^{1, 2}, 吴婷^{1, 2}, 慕海锋^{1, 2}

1.吉林大学生物与农业工程学院,长春 130022;
2.吉林大学工程仿生教育部重点实验室,长春 130022

收稿日期:2016-08-24 出版日期:2017-07-20 发布日期:2017-07-20
通讯作者: 常志勇(1980-),男,在站博士后,高级工程师.研究方向:农业机械化工程.E-mail:zychang@jlu.edu.cn
作者简介:陈东辉(1961-),男,教授,博士.研究方向:农业机械化工程与表面摩擦学.E-mail:dhchen@jlu.edu.cn
基金资助:
国家重点研发计划项目(2016YFD0701102); 中国博士后科学基金项目(2015M571367); 吉林省科技发展计划项目(20150520075JH); 吉林省省级产业创新专项项目(2016C029); 吉林省教育厅“十三五”科学技术研究项目(吉教科合字[2016]442号).

Bionic design of corn stubble collector based on surface structure of Patinopecten yessoensis

CHEN Dong-hui^{1, 2}, LIU Wei^{1, 2}, LYU Jian-hua^{1, 2}, CHANG Zhi-yong^{1, 2}, WU Ting^{1, 2}, MU Hai-feng^{1, 2}

1.College of Biological and Agricultural Engineering, Jilin University, Changchun 130022,China;
2.Key Laboratory of Bionic Engineering, Ministry of Education, Changchun 130022,China

Received:2016-08-24 Online:2017-07-20 Published:2017-07-20

摘要/Abstract

摘要： 针对收获过程中玉米根茬捡拾的难题,设计了一种新型的仿生玉米根茬捡拾器。通过开展捡拾器捡拾过程的运动学分析以及玉米根茬的运动学分析,对捡拾齿的几何结构做了优化设计。以虾夷扇贝体表棱纹轮廓为仿生原型,通过逆向工程技术,对虾夷扇贝体表轮廓进行拟合,得到其拟合函数。以正弦函数数学模型y=1.5sin(πx/4)为棱纹轮廓对捡拾器的工作曲面进行棱纹型仿生几何结构设计,其中,x的取值范围为[0,4]。利用有限元分析软件ANSYS分析捡拾齿与玉米根茬之间不同的摩擦因数和不同的捡拾位置对捡拾效果的影响。结果表明:捡拾齿工作面表面的仿生棱纹几何结构有利于增大捡拾器与玉米根茬之间的摩擦因数,从而促进玉米根茬的捡拾;在捡拾过程中,捡拾位置越低,越有利于玉米根茬的捡拾。

关键词: 工程仿生学, 捡拾器, 运动学分析, 结构优化, 虾夷扇贝, 仿生设计, 有限元分析

Abstract: In corn stubble harvesting, in order to solve the difficulty of corn stubble picking-up, a new corn stubble collector was designed. First, the kinematics of the stubble picking-up process was carried out. Then, the picking-up finger was designed. Further, reverse engineering method was employed to examine the contour of the surface of Patinopecten yessoensis as a bionic model. The cloud points of the contour to the ridges on the surface were fitted. The bionic ribbed surface of the picking-up finger was designed with a sinusoidal function y = 1.5·sin(πx/4) to present the ribbed contour, where x ranges from 0 to 4. For three different bionic corn stubble collectors, finite element software ANSYS was used to investigate the effects of friction coefficient between the picking-up finger and corn stubble, and the picking-up location on the performance of the collectors. Results show that the bionic ribbed surface of the picking-up finger contributes to the increase of the friction between the finger and the corn stubble, which enhances the corn stubble picking-up effect. Lower picking-up position benefits the corn stubble picking-up process.

Key words: bionic engineering, corn stubble collector, kinematic analysis, structure optimization, Patinopecten yessoensis, bionic design, finite element analysis

中图分类号:

TH122

陈东辉, 刘伟, 吕建华, 常志勇, 吴婷, 慕海锋. 基于虾夷扇贝体表结构的玉米茬根捡拾器仿生设计[J]. 吉林大学学报(工学版), 2017, 47(4): 1185-1193.

CHEN Dong-hui, LIU Wei, LYU Jian-hua, CHANG Zhi-yong, WU Ting, MU Hai-feng. Bionic design of corn stubble collector based on surface structure of Patinopecten yessoensis[J]. 吉林大学学报(工学版), 2017, 47(4): 1185-1193.

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基于虾夷扇贝体表结构的玉米茬根捡拾器仿生设计

Bionic design of corn stubble collector based on surface structure of Patinopecten yessoensis

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