蜻蜓膜翅前缘脉的纳米力学性能  

Property Tests of Nanoindentation on Membranous Wings of Dragonflies

作　　者：赵彦如[1] 佟金[2] 孙霁宇[2] 陈东辉[2] 张金 

机构地区：[1]河南理工大学机械与动力工程学院,河南焦作454000 [2]吉林大学地面机械仿生技术教育部重点实验室,长春130025 [3]上海联合汽车电子有限公司,上海200051

出　　处：《农机化研究》2009年第11期26-29,共4页Journal of Agricultural Mechanization Research

基　　金：国家自然科学基金项目(50675087;30600131);高等学校博士学科点专项科研基金项目(20060183067);国家杰出青年科学基金项目(50025516);河南理工大学博士基金项目(B2008-74)

摘　　要：利用纳米力学测试系统对3种蜻蜓膜翅的纳米力学性能进行了测试。通过考察不同加载速率和保压时间对样品约化模量和纳米硬度的影响,确定最佳保压时间为20s,加载速率为53μN/s。纳米力学试验过程中,对大小在0.075mm×0.01mm范围内的所有测试部位分别进行6次纳米压痕试验,6次压痕试验的平均值即为每个被测部位的纳米压痕性能。对碧伟蜓、黄蜻和条斑赤蜻3种蜻蜓在体样品前后翅前缘脉的纳米力学性能进行了测试,发现碧伟蜓、黄蜻约化模量和纳米硬度的最大值出现在其膜翅长度的0.7L处;条斑赤蜻约化模量和纳米硬度的最大值出现在其膜翅长度的0.5L处。The nano - mechanical behavior of dragonfly membranous wings was investigated with a nano - indenter. The holding time and the loading rate were selected 20s and 53 μN/s by the method of test optimization. In nano - indentation experiment, 6 indentation measurements were done in an area of 0. 075mm × 0.01 mm and then took the mean value as the nano - mechanical parameter of this position. It was shown that the maximums of the reduced modulus and the hardness of the living dragonfly anax parthenope julius brauer and pantala flavescens fabricius are about at position of 0.7L of their wings, where L is the total length of their wings. The maximums of the reduced modulus and the hardness of the dragonfly sympetrum striolatum charpentier are at position of 0.5 L of its wing, where L is the total length of the wing. The reduced modulus and the hardness of the dragonfly anax parthenope julius Brauer are maximum on the corresponding parts among the three dragonflies, related to the large somatotype.

关 键 词：碧伟蜓 黄蜻 条斑赤蜻 膜翅 纳米力学性能 

分 类 号：O344[理学—固体力学] Q969.22[理学—力学]