仿豆天蛾幼虫充气薄膜管弯曲特性研究

发布时间：2018-02-15 03:23

本文关键词： 豆天蛾幼虫仿生设计充气管弯曲特性有限元分析　出处：《农业机械学报》2017年07期 　论文类型：期刊论文

【摘要】：受豆天蛾幼虫体壁结构有较强的抗弯稳定性启发,设计了仿生充气管,以提高其弯曲特性。制作豆天蛾幼虫体壁组织切片,观察其体壁与附近肌肉组织的连接方式以及肌肉组织的分布形式,以此为依据设计了加筋充气管。通过有限元仿真和试验分析了普通充气管和加筋充气管在不同压力下的弯曲特性,获得了不同充气压力下横向载荷-位移关系曲线以及充气管弯曲极限载荷与充气压力的关系曲线。结果表明:在所选压力范围内,充气管的极限载荷与充气压力呈正比,加强筋的存在提高了充气管的弯曲特性,同时仿真结果表明,45°加载时加筋充气管的抗弯能力较0°加载时更强,两者均高于无加强筋时的抗弯能力。
[Abstract]:Inspired by the strong bending stability of the wall structure of the larvae, a bionic inflatable tube was designed to improve its bending properties. The connection between the body wall and the nearby muscle tissue and the distribution of the muscle tissue were observed. Based on this, the reinforced inflatable tube is designed. The bending characteristics of common inflatable tube and reinforced inflatable tube under different pressures are analyzed by finite element simulation and test. The curves of transverse load-displacement relationship under different inflatable pressures and the relationship curves between the bending limit loads of inflatable tubes and the inflatable pressures are obtained. The results show that the limit loads of the inflatable tubes are proportional to the inflatable pressures in the selected pressure range. The bending characteristics of inflatable tubes are improved by the existence of stiffeners, and the results of simulation show that the flexural capacity of reinforced inflatable tubes is stronger than that of 0 掳loading, and both of them are higher than those without reinforcing tendons.
【作者单位】：吉林大学生物与农业工程学院;吉林大学工程仿生教育部重点实验室;
【基金】：国家重点研发计划项目(2016YFD0701102) 中国博士后科学基金第九批特别项目(2016T90256) 第57批中国博士后科学基金面上项目(2015M571367) 吉林省科技发展计划项目(20150520075JH)
【分类号】：TB17;TB391

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