SMA-MR材料减振器温度力学特性研究  

Study on Temperature Mechanical Properties of SMA-MR Material Dampers

作　　者：闫辉[1] 阎旭 赵亚磊 苏海洋 姜洪源[1] 杨东升[1] Yan Hui;Yan Xu;Zhao Yalei;Su Haiyang;Jiang Hongyuan;Yang Dongsheng(Harbin Institute of Technology,Harbin 150001,China)

机构地区：[1]哈尔滨工业大学,黑龙江哈尔滨150001

出　　处：《稀有金属材料与工程》2020年第4期1140-1143,共4页Rare Metal Materials and Engineering

基　　金：Shanghai Aerospace Science and Technology Innovation Fund(SAST2017-031,SAST2017-018)。

摘　　要：以某型号飞行器用减振器性能研究为背景,设计了一种由NiTi合金丝经卷簧编织、冷冲压成型、后处理得到的新型记忆合金金属橡胶(SMA-MR)阻尼减振器。通过对SMA-MR减振器进行理论和试验研究,分析其在20~90℃温度环境下的等效刚度与能量耗散系数的变化情况,研究SMA-MR减振器的力学特性随温度变化的规律,利用试验结果,分析等效刚度、能量耗散系数与温度的关系。研究结果表明SMA-MR减振器的等效刚度随温度升高而升高,而能量耗散系数随温度升高而降低。分析结果为SMA-MR减振器的设计及特种环境下的减振应用提供理论依据与数据参考。Against the background of the research on the performance of dampers for a certain type of spacecraft,a new type of shape memory alloy metal rubber(SMA-MR)damper which was made of Ni-Ti alloy wire processed by coil spring,cold stamping and post-treatment was designed.Through theoretical and experimental research on SMA-MR dampers,the equivalent rigidity and energy dissipation coefficient of the damping system in the temperatures range of 20~90℃were analyzed.The law of mechanical properties of SMA-MR material with temperature was studied.The relationship between equivalent rigidity,energy dissipation coefficient and temperature were analyzed using the experimental results.The results show that the equivalent rigidity of SMA-MR dampers increases with the increase of temperature while the energy dissipation coefficient of SMA-MR dampers decreases.The analysis results provide theoretical basis and data reference for the design of SMA-MR dampers and their application under extreme environment.

关 键 词：SMA-MR 等效刚度 能量耗散系数 试验研究 

分 类 号：V414[航空宇航科学与技术—航空宇航推进理论与工程]