八连杆隔离器的结构及隔冲特性分析

PDF(2428 KB)

振动与冲击 ›› 2021, Vol. 40 ›› Issue (9) : 160-165.

论文

八连杆隔离器的结构及隔冲特性分析

张磊1,2，高鹏1,2，闫明1，杜志鹏1,2

作者信息 +

Analysis of structure and shock isolation characteristics of 8-bar isolator

ZHANG Lei1,2, GAO Peng1,2, YAN Ming1, DU Zhipeng1,2

Author information +

文章历史 +

摘要

为提高惯导设备隔离器的防护能力，基于Stewart平台理念，提出了一种能够大幅度卸载任意方向冲击载荷的八连杆隔离器，该抗冲击隔离器能够显著提高惯导设备的防护能力。首先分析了结构的刚度特性，得出静刚度与理论设计相符，并基于振动试验，得出该结构的固有频率满足设计要求，隔振效果较好；同时，在大量的冲击试验和仿真的基础上，通过分析设备响应峰值及隔离率，证明该结构具有较好的隔冲性能，且水平向更突出；进而利用仿真及试验数据绘制冲击响应谱，得出该结构频域上的隔冲能力同样显著。综上得出，在时域和频域内，八连杆隔离器的隔冲能力较强，该隔离器的结构和隔冲特性分析可为隔离器的优化设计提供参考。

Abstract

In order to improve the protective capability of isolator of inertial navigation equipment, based on the concept of Stewart platform, an 8-bar isolator was proposed to be able to greatly unload impact load in any direction.The isolator could significantly improve the protection ability of inertial navigation equipment.Firstly, stiffness characteristics of the structure were analyzed, and it was found that its static stiffness is consistent with the theoretical design value.Based on vibration tests, it was concluded that the natural frequency of the structure meets design requirements, and its vibration isolation effect is better.At the same time, based on large number of shock tests and simulation, through analyzing equipment response peaks and isolation rate, it was proved that the structure has better shock isolation performance, and its horizontal direction is more prominent.The simulation and test data were used to draw the structure’s shock response spectrum, it was concluded that the shock isolation ability of the structure in frequency domain is also significant.In summary, it was shown that in time domain and frequency domain, the 8-bar isolator has stronger shock isolation ability; the analysis of structure and shock isolation characteristics of the isolator can provide a reference for optimal design of the isolator.

导出引用

张磊1,2，高鹏1,2，闫明1，杜志鹏1,2. 八连杆隔离器的结构及隔冲特性分析[J]. 振动与冲击, 2021, 40(9): 160-165

ZHANG Lei1,2, GAO Peng1,2, YAN Ming1, DU Zhipeng1,2. Analysis of structure and shock isolation characteristics of 8-bar isolator[J]. Journal of Vibration and Shock, 2021, 40(9): 160-165

参考文献

［1］汪玉, 冯奇.舰船设备抗冲隔振系统建模理论及其应用［M］.北京: 国防工业出版社, 2006.
［2］钱安其, 嵇春艳, 王自力.水下爆炸载荷作用下水面舰艇设备冲击环境预报方法研究［J］.舰船科学技术, 2006, 28(4):43-47.
QIAN Anqi, JI Chunyan, WANG Zili.Prediction method of shock environment for equipments on water ship under water explosion ［J］.Ship Science and Technology, 2006, 28(4): 43-47.
［3］汪玉.实船水下爆炸冲击试验及防护技术［M］.北京: 国防工业出版社, 2010.
［4］沈荣瀛, 华宏星.舰船机械设备冲击隔离技术研究进展［J］.船舶力学, 2010, 20(5): 299-301.
SHEN Rongying, HUA Hongxing.Advances in study on shock isolation of naval quipment ［J］.Ship Mechanics, 2010, 20(5): 299-301.
［5］BALAJI P S, LEBLOUBA M, RAHMAN M E, et al.Static lateral stiffness of wire rope isolators［J］.Journal of Structural Mechanics, 2016, 44(4):462-475.
［6］BO C, LU X, ZHU X.Research of numerical simulation method on vertical stiffness of polycal wire rope isolator［J］.Journal of Mechanical Science & Technology, 2018, 32(6):2541-2549.
［7］单树军, 何琳.黏性阻尼在硬特性刚度隔冲系统中的作用［J］.振动与冲击, 2008, 27(6): 96-98.
SHAN Shujun, HE Lin.Effect of viscous damping on a hard rigidity shock isolation system ［J］.Journal of Vibration and Shock, 2008，27(6)：96-98．
［8］江国和, 沈荣瀛, 吴广明.舰船设备冲击隔离系统优化设计计算［J］.噪声与振动控制, 2003, 23(6): 25-28.

JIANG Guohe, SHEN Rongying, WU Guangming.Qptimal calculation on shock isolation of naval naval equipment ［J］.Noise and Vibration Control, 2003，23(6)：25- 28． 
［9］刘兴天, 黄修长, 张志谊, 等.激励幅值及载荷对准零刚度隔振器特性的影响［J］.机械工程学报, 2013,49(6)：90-94．
LIU Xingtian, HUANG Xiuchang, ZHANG Zhiyi, et al.Influence of excitation amplitude and load on the characteristics of quasi-zero stiffness isolator ［J］.Journal of Mechanical Engineering, 2013, 49(6): 90-94． 
［10］徐道临, 张月英, 周加喜,等.一种准零刚度隔振器的特性分析与实验研究［J］.振动与冲击, 2014, 33(11):209-213.
XU Daolin, ZHANG Yueying, ZHOU Jiaxi, et al.Characteristic analysis and experimental investigation for a vibration isolation with quasi-zero stiffness ［J］.Journal of Vibration and Shock, 2014, 33(11): 209-213.
［11］HOQUE M E, MIZUNO T, ISHINO Y, et al.A three-axis vibration isolation system using modified zero-power controller with parallel mechanism technique ［J］.Mechatronics, 2011, 21(6):1055-1062.
［12］HUANG X, LIAO Q, WEI S.Closed-form forward kinematics for a symmetrical 6-6 Stewart platform using algebraic elimination［J］.Mechanism & Machine Theory, 2010, 45(2):327-334.
［13］PREUMONTA A, HORODINCAA M, ROMANESCUA I, et al.A six-axis single-stage active vibration isolator based on Stewart platform ［J］.Journal of Sound and Vibration, 2007, 300(3):644-661.
［14］AFZALIFAR B , LIDSTRM P, NILSSON K.Parametric damped vibrations of Gough-Stewart platforms for symmetric configurations［J］.Mechanism & Machine Theory, 2014, 80(4): 52-69.
［15］TARI H , SU H J, HAUENSTEIN J D.Classification and complete solution of the kinetostatics of a compliant Stewart-Gough platform［J］.Mechanism & Machine Theory, 2012, 49(3): 177-186.
［16］黄真.论机构自由度［M］.北京: 科学出版社，2011.
［17］路立军.旋量理论概述［J］.机械工程师, 2012(4): 40-41.
LU Lijun.An overview of screw theory ［J］.Mechanical Engineer, 2012(4): 40-41.
［18］张春辉, 汪玉, 温肇东, 等.被动式Stewart隔冲平台刚度特性研究［J］.振动、测试与诊断,2015,35（2）:290-291.
ZHANG Chunhui, WANG Yu, WEN Zhaodong, et al.Research on stiffness characteristics of a passive Stewart shock isolation platform ［J］.Journal of Vibration, Measurement & Diagnosis, 2015, 35（2）: 290-291.
［19］徐杭田, 单树军.黏性阻尼在软特性刚度隔冲系统中的作用研究［J］.振动与冲击, 2010, 29(2):196-198.
XU Hangtian, SHAN Shujun.Effect of viscous damping in a soft stiffness shock isolation system ［J］.Journal of Vibration and Shock, 2010，29(2)：196-198．
［20］刘兴天, 张志谊, 华宏星.新型低频隔振器的特性研究［J］.振动与冲击, 2013, 32(5):161-164.
LIU Xingtian, ZHANG Zhiyi, HUA Hongxing.Characteristics of a novel low-frequency isolator ［J］.Journal of Vibration and Shock, 2013, 32(5):161-164.