Here, in order to improve dynamic environment of a satellite in launching stage, a nonlinear energy sink device was introduced into the satellite adapter structure, it was coupled with the main structure of the satellite to realize the whole satellite system’s vibration suppression.For the equivalent lumped mass model of the whole satellite system after coupled, considering influences of the nonlinear energy sink’s gravity on nonlinear spring restoring force, using the 4th order Runge-Kutta method, vibration responses of the whole satellite system under harmonic excitation and impact excitation were solved.Results showed that vibration responses considering gravity are more accurate than those without considering gravity, their amplitudes are a bit smaller; to further lift the nonlinear energy sink device’s vibration suppression efficiency without changing original natural frequencies of the whole satellite system, a nonlinear energy sink device with the same mass and a two-stage series structure was adopted, and its nonlinear stiffness parameters were optimized based on the theory of target energy transfer.The analysis results showed that the nonlinear energy sink with 2-stage series structure can have better vibration reduction effect than the one with a single-stage structure can under impact excitation.
Key words
nonlinear energy sink /
whole satellite vibration suppression /
series NES /
vibration control
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References
[1] 马兴瑞, 于登云, 韩增尧, 邹元杰. 星箭力学环境分析与试验技术研究进展[J]. 宇航学报, 2006(03): 323-331.
MA Xing-rui, YU Deng-yun, HAN Zeng-yao. Research progress on environmental analysis and experimental technology of rocket mechanics [J]. Journal of Astronautics, 2006(03): 323-331.
[2] Remedia, M. Aglietti, G S. Richardson, G. Modelling the Effect of Electrical Harness on Micro-vibration Response of Structures[J]. Acta Astronautica, 2015, 109:88-102.
[3] 王现成, 郭蓬勃, 张益民. 用吸振器消除框架梁横向振动的可行性[J]. 振动与冲击, 2015, 34(14):179-182.
WANG Xian-cheng, GUO Peng-bo, ZHANG Yi-ming. The feasibility of eliminating transverse vibration of frame beam with vibration absorber[J]. Journal of Vibration and impact, 2015, 34(14):179-182.
[4] 杨飞, 杨智春, 王巍. 吸振夹层壁板颤振抑制的吸振器频率设计[J]. 振动与冲击, 2009, 28(07): 65-68+213.
YANG Fei, YANG Zhi-chun, WANG Wei. Frequency design of vibration absorber for vibration isolation of sandwich panel [J]. Journal of vibration and impact, 2009, 28(07): 65-68+213.
[5] 严浩, 熊夫睿, 姜乃斌.含非线性能量汇的简支输液管非线性振动控制研究[J].固体力学学报,2019,40(02):127-136.
YAN Hao, XIONG Fu-rui, JIANG Nai-bin. Nonlinear vibration control of simply supported infusion tube with nonlinear energy reservoir[J]. Journal of solid mechanics , 2019,
40(02):127-136.
[6] 陈恒,王扬渝,金江明.带控制截面机翼结构基于非线性能量阱的颤振抑制[J].动力学与控制学报,2017,15(05):459-466.
CHEN Heng, WANG Yang-yu, JIN Jiang-ming. Flutter suppression of wing structures with controlled cross-sections based on nonlinear energy Sink [J]. Journal of dynamics and control, 2017, 15(05):459-466.
[7] 陈勇, 徐羿. 基于非线性能量吸振器的高耸结构减振分析[J]. 振动与冲击, 2014, 33(09): 27-32+54.
CHEN Yong, XU Yi. Vibration reduction analysis of high-rise structure based on nonlinear energy absorber [J]. Vibration and impact, 2014, 33(09): 27-32+54.
[8] 孙敏,陈建恩,陈焕林.并联和串联非线性能量阱的吸振效能对比研究[J].哈尔滨工程大学学报,2018,39(10):1727-1732.
SUN Min, CHEN Jian-en, CHEN Huan-lin. Comparative study on vibration absorption efficiency of parallel and series nonlinear energy Wells [J]. Journal of Harbin Institute of Technology, 2018, 39(10): 1727-1732.
[9] 何伟. 并联非线性能量阱对热环境中简支梁的吸振作用研究[D].天津理工大学,2018.
He Wei. Research on the effect of parallel nonlinear energy sink on the energy absorption of simply supported beams in thermal environment [D]. Tianjin university of technology, 2018.
[10] 李继伟. 含非线性能量阱系统的动力学及吸振效果研究[D].兰州交通大学,2017.
LI Ji-wei. Research on dynamics and vibration absorption effect of a system with nonlinear energy trap [D]. Lanzhou jiaotong university, 2017.
[11] Chen Li-qun, Li Xiang, Lu Ze-qi. Dynamic effects of weight on vibration reduction by a nonlinear energy sink moving vertically[J]. Journal of sound and vibration, 2019, 451: 99-119.
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