运载火箭在发射过程中会经历复杂的动力学环境，而普通的隔振器无法做到对高频冲击振动进行抑制的同时避免对低频振动的放大。利用形状记忆合金（SMA）作为驱动器，结合金属橡胶的刚度对形变量敏感的特点，设计了一种可改变自身固有频率的隔振器。在实验研究不同参数的金属橡胶隔振特性的基础之上，选用合适的金属橡胶作为可变频隔振器的隔振元件，并通过实验对比隔振器变频前后的共振频率差异。实验结果表明，所设计的可变频隔振器的固有频率从60Hz以下提高到110Hz以上，满足设计要求。
Abstract
Launch vehicles undergo complex dynamic environment, and ordinary vibration isolator cannot afford to carry on the suppression of the high-frequency vibration and avoid the low-frequency vibration amplification. Using shape memory alloy (SMA) as a drive and metal rubber as damping elements, a novel design of vibration isolator was proposed. After experimental research on different parameters of the metal rubber, suitable metal rubbers were selected as the frequency tunable vibration isolator components. The experimental result shows that natural frequency of the frequency tunable vibration isolator can change from 60 Hz to 110 Hz, which meets the design requirements.
{{custom_sec.title}}
{{custom_sec.title}}
{{custom_sec.content}}
参考文献
[1] 刘天雄, 林益明, 王明宇,等. 航天器振动控制技术进展[J]. 宇航学报, 2008, 29(1):1-12.
LIU Tian-xiong, LIN Yi-min, WANG Ming-yu, et al. Review of the Spacecraft Vibration Control Technology.[J]. Journal of Astronautics, 2008, 29(1):1-12.
[2] 涂凡凡. 人工神经网络在压电主动减振系统中的应用研究[D]. 南京航空航天大学, 2013.
TU Fan-fan. Research on Artificial Neural Network Application in Active Damping System using Piezoelectric actuators[D]. Nanjing University of Aeronautics and Astronautics, 2013.
[3] Badel A, Sebald G, Guyomar D, et al. Piezoelectric vibration control by synchronized switching on adaptive voltage sources: Towards wideband semi-active damping[J]. Journal of the Acoustical Society of America, 2006, 119(5):2815-2825.
[4] 季宏丽, 裘进浩, 赵永春,等. 基于压电元件的半主动振动控制的研究[J]. 振动工程学报, 2008, 21(6):614-619.
JI Hong-li , QIU Jin-hao , ZHAO Yong-chun, et al. Semi-active vibration control using piezoelectric elements.[J]. Journal of Vibration Engineering, 2008, 21(6):614-619.
[5] 梅胜敏, 秦太验, 陶宝祺. SMA用于振动主动控制的方法初探[J]. 力学与实践, 1995, 17(4): 16-19.
MEI Sheng-tai, QIN Tai-yan, TAO Bao-qi. SMA used in active vibration control.[J], Mechanics in Engineering, 1995, 17(4): 16-19.
[6] Liang C, Rogers C A. Design of shape memory alloy springs with applications in vibration control. ASME Journal of Vibration and Acoustics, 1993, 115(1): 129-135
[7] 陶宝祺. 智能材料结构[M] . 北京 :国际工业出版社 ,1997
[8] Tanaka K. A Phenomenological Description on Thermomechanical Behavior of Shape Memory Alloys. [D]. Journal of Pressure Vessel Technology, 1990, 112: 158-163.
[9] 王瑞瑞. 金属丝网橡胶阻尼材料的静动态力学特性试验研究[D]. 哈尔滨工程大学, 2012.
WANG Rui-rui. An Investigation on the Static and Dynamic Performance for the Metal-net Rubber Damping Material. [D]. Harbin Engineering University, 2012.
[10] 张步云, 陈怀海, 贺旭东. 多输入多输出正弦扫频试验控制新方法[J]. 振动与冲击, 2015(8):198-202.
ZHANG Bu-yun, CHEN Huai-hai, HE XUudong. New control method for MINO swept-sine test. Shock and Vibration, 2015(8):198-202.
{{custom_fnGroup.title_cn}}
脚注
{{custom_fn.content}}
PDF(1194 KB)
