NiTi形状记忆合金弹簧电热驱动特性研究  

Study on Electrothermal Driving Characteristics of NiTi Shape Memory Alloy Spring

作　　者：李珺[1] 陈永正 LI Jun;CHEN Yong-zheng(College of Mechanical and Electrical Engineering,Northeast Forestry University,Harbin 150040,China)

机构地区：[1]东北林业大学机电工程学院,黑龙江哈尔滨150040

出　　处：《机械工程与自动化》2024年第6期1-3,6,共4页Mechanical Engineering & Automation

基　　金：国家自然科学基金资助项目(52071074)。

摘　　要：在对NiTiSMA弹簧致动原理分析的基础上,基于所设计的测试方案和实验平台对NiTiSMA弹簧的变形速度、收缩力以及疲劳性能进行了研究。揭示了激励电流、外部负载以及拉伸长度对NiTiSMA弹簧变形速度的影响;得出实验所用弹簧的最佳拉伸范围为60 mm~90 mm以及最大拉伸长度为110 mm。实验结果表明,随着外部负载的增大,NiTiSMA弹簧的可循环使用次数显著下降。In this paper,based on the analysis of the actuating principle of NiTiSMA spring,the deformation velocity,shrinkage force and fatigue performance of NiTiSMA spring were studied based on the designed test scheme and experimental platform.The influences of excitation current,external load and tensile length on the deformation velocity of NiTiSMA spring are revealed.It is concluded that the best stretching range of the spring used in the experiment is 60 mm~90 mm and the maximum stretching length is 110 mm.The experimental results show that the number of cycles of NiTiSMA spring decreases significantly with the increase of external load.

关 键 词：形状记忆合金 电热驱动 弹簧 疲劳失效 

分 类 号：TG139.6[一般工业技术—材料科学与工程]