| 适用于生物薄膜材料的压电驱动高精度疲劳试验机构 |
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| 引用本文： | 接勐,谢海峰,刘焱,李秀娟,杨志刚.适用于生物薄膜材料的压电驱动高精度疲劳试验机构[J].纳米技术与精密工程,2013(2):134-139. |
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| 作者姓名： | 接勐 谢海峰 刘焱 李秀娟 杨志刚 |
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| 作者单位： | [1]吉林大学机械科学与工程学院,长春130025 [2]吉林化工学院机电工程学院,吉林132022 [3]东北电力大学机械工程学院,吉林132012 [4]吉林大学工程仿生教育部重点实验室,长春130025 |
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| 基金项目： | 基金项目：国家自然科学基金资助项目（51075175）. |
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| 摘 要： | 为研究生物薄膜材料的疲劳行为及其机制，对其进行疲劳测试，利用压电振子作为疲劳试验机构的驱动力源，并基于系统共振方法设计了适用于昆虫薄膜材料的疲劳试验机构．首先，介绍压电驱动式疲劳试验机构的工作原理，然后建立动力学模型，获得机械系统的动态特性，并制作了样机．最后利用样机在蜻蜓翅翼上施加给定循环特性R=0．1的交变应力，通过对试验结果的观察，分析了蜻蜓翅翼由于疲劳破坏所引起的一系列裂纹产生、扩展的机理．制成的样机满足对生物薄膜材料进行疲劳试验所需的载荷小、加栽精度高、共振稳定可靠和抗干扰能力强等要求．
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| 关 键 词： | 压电 压电振子 疲劳试验机构 生物薄膜材料 蜻蜓翅翼 |
High Precision Piezoelectric Fatigue Testing Machine for Biofilm Materials |
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| Jie Meng,Xie Haifeng,Liu Yan,Li Xiujuan,Yang Zhigang.High Precision Piezoelectric Fatigue Testing Machine for Biofilm Materials[J].Nanotechnology and Precision Engineering,2013(2):134-139. |
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| Authors: | Jie Meng Xie Haifeng Liu Yan Li Xiujuan Yang Zhigang |
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| Affiliation: | 1. Mechanical Science and Engineering College, Jilin University, Changehun 130025, China; 2. College of Mechanical and Electricity Engineering, Jilin Institute of Chemical Technology, Jilin 132022, 3. School of Mechanical Engineering, Northeast Dianli University, Jilin 132012, China; 4. Key Laboratory of Bionic Engineering(Jilin University) of Ministry of Education, Changchun 130025, |
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| Abstract: | To study the fatigue mechanism and property of biofilm materials, this paper designed a novel fatigue testing machine driven by piezoelectric vibrator. First, the working principle of the fatigue testing machine for biofilm materials was introduced. Then the dynamic model of the machine was es- tablished to obtain its system dynamic characteristics. Finally, a prototype was manufactured. The fa- tigue test of dragonfly wings was carried out by the prototype with the alternating cycle load （cycle characteristic R=O.1 ）. The mechanism of initialization and propagation of cleft caused by fatigue failure was obtained. The prototype can meet the requirement of small load, high precision loading, steady resonance and high ability of anti-interference during the fatigue test. |
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| Keywords: | piezoelectric piezoelectric vibrator fatigue testing machine biofilm materials dragonflywings |
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