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PASSIVE VIBRATION CONTROL OF SPACE STRUCTURE BY RECEPTANCE THEORY
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作者 严天宏 郑钢铁 黄文虎 《Applied Mathematics and Mechanics(English Edition)》 SCIE EI 2000年第4期471-478,共8页
The vibration of three-dimensional frame structures was studied as receptance motion. A receptance model was constructed for passive vibration reduction. First, the universal receptance computational method suitable t... The vibration of three-dimensional frame structures was studied as receptance motion. A receptance model was constructed for passive vibration reduction. First, the universal receptance computational method suitable to any combination of boundary conditions was given, and then the way of passive damping-damping elements was analyzed, and an iterative approach to select optimal damping positions, whose dissipated paver is larger than the others, was proposed bared on the results of receptance analysis. The results show that, the receptance model is very suitable for local modification and analysis of structures. 展开更多
关键词 passive vibration control mechanical receptance energy dissipate power damping elements
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Passive vibration control of truss-cored sandwich plate with planar Kagome truss as one face plane 被引量:5
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作者 GUO Xu JIANG Jun 《Science China(Technological Sciences)》 SCIE EI CAS 2011年第5期1113-1120,共8页
Kagome based high authority shape morphing structure is a kind of truss-cored sandwich metal plate with a planar Kagome truss as one of its face plane. The planar Kagome truss can achieve arbitrary in-plane nodal disp... Kagome based high authority shape morphing structure is a kind of truss-cored sandwich metal plate with a planar Kagome truss as one of its face plane. The planar Kagome truss can achieve arbitrary in-plane nodal displacements with minimal internal resistance when its rods are deformed. Moreover, the in-plane deflection of the planar Kagome truss may induce the lateral deflection of the whole sandwich plate. In this paper, the feasibility to enhance the damping of the truss-cored sandwich plate through the replacement of a very small portion of rods in the planar Kagome truss by cylindrical viscoelastic dampers is exploited. The Biot model is chosen to simulate the behavior of the viscoelastic material in the dampers, and the fraction of axial modal strain energy of the rods in the planar Kagome truss is adopted as the index to decide the positions of the dampers. Through complex modal analysis and time-domain simulation, it is shown that the passive vibration control approach is very effective for the vibration reduction of this kind of truss-cored sandwich plates. 展开更多
关键词 truss-cored sandwich plate passive vibration control cylindrical viscoelastic damper modal strain energy
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Design Methodology of a Passive Vibration Isolation System for an Optical System With Sensitive Line-of-Sight
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作者 Keqi QI Lei DAI +4 位作者 Shaoxin WANG Yongming YANG Yalin DING Chao FANG Chao LIN 《Photonic Sensors》 SCIE EI CSCD 2021年第4期435-447,共13页
The performance of an optical system with sensitive line-of-sight(LOS)is influenced by rotational vibration.In view of this,a design methodology is proposed for a passive vibration isolation system in an optical syste... The performance of an optical system with sensitive line-of-sight(LOS)is influenced by rotational vibration.In view of this,a design methodology is proposed for a passive vibration isolation system in an optical system with sensitive LOS.Rotational vibration is attributed to two sources:transmitted from the mounting base and generated by modal coupling.Therefore,the elimination of the rotational vibration caused by coupling becomes an important part of the design of the isolation system.Additionally,the decoupling conditions of the system can be obtained.When the system is totally decoupled,the vibration on each degree of freedom(DOF)can be analyzed independently.Therefore,the stiffness and damping coefficient on each DOF could be obtained by limiting the vibration transmissibility,in accordance to actual requirements.The design of a vibration isolation system must be restricted by the size and shape of the payload and the installation space,and the layout constrains are thus also discussed. 展开更多
关键词 Optical system with sensitive LOS passive vibration isolation system decoupling conditions TRANSMISSIBILITY
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Hybrid Passive/Active Vibration Control of a Loosely Connected Spacecraft System 被引量:3
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作者 Xin Wang Xiaokui Yue +1 位作者 Haowei Wen Jianping Yuan 《Computer Modeling in Engineering & Sciences》 SCIE EI 2020年第1期61-87,共27页
In this paper,a hybrid passive/active vibration(HPAV)controller of a loosely connected spacecraft consisting of a servicing satellite,a target and an X-shape structure isolator is first proposed to suppress vibrations... In this paper,a hybrid passive/active vibration(HPAV)controller of a loosely connected spacecraft consisting of a servicing satellite,a target and an X-shape structure isolator is first proposed to suppress vibrations of the system when subjected to the impulsive external excitations during the on-orbit missions.The passive dynamic response of the combined system can be adjusted appropriately to achieve the desired vibration isolation performance by tuning the structural parameters of the bio-inspired X-shape structure.Moreover,the adaptive control design through dynamic scaling technique is selected as the active component to maintain high vibration isolation performance in the presence of parameter uncertainties such as mass of the satellite platform,the damping and rotation friction coefficients of the X-shape structure.Compared with the pure passive system and the traditional spring-mass-damper(SMD)isolator,the HPAV strategy witnesses lower transmissibility,smaller vibration amplitude and higher convergence rate when subjected to the post-capture impact.Numerical simulations demonstrate the feasibility and validity of the proposed hybrid control scheme in suppressing vibrations of the free-floating spacecraft. 展开更多
关键词 Hybrid passive/active vibration control X-shape structure adaptive control on-orbit capture
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Vibration Suppression Analysis for Supporter with Constrained Layer Damping 被引量:2
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作者 杜华军 邹振祝 黄文虎 《Journal of Harbin Institute of Technology(New Series)》 EI CAS 2004年第2期231-236,共6页
By analyzing the correlation between modal calculations and modal experiments of a typical supporter, an effective finite element analysis( FEA)model of the actual aerospace supporter is created. According to the anal... By analyzing the correlation between modal calculations and modal experiments of a typical supporter, an effective finite element analysis( FEA)model of the actual aerospace supporter is created. According to the analysis of constrained viscoelastic damping, the strategies of PVC have been worked out, and the correlation between modal calculations and modal experiments of the supporter has also been computed, and then, an experiment has been designed based on the calculation results. The results of experiments verify that the PVC strategy can effectively suppress vibration. 展开更多
关键词 passive vibration control constrained damping structural optimization
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Keynote Summaries of the First International Symposium on Dynamics,Monitoring,and Diagnostics
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作者 JDMD Editorial Office Jérôme Antoni +5 位作者 P.Stephan Heyns Jing Lin Huajiang Ouyang Stephan Schmidt Wade A.Smith Daniel N.Wilke 《Journal of Dynamics, Monitoring and Diagnostics》 2022年第4期189-199,共11页
The first International Symposium on Dynamics,Monitoring,and Diagnostics was held in Chongqing,China,in April 2022.The Symposium,which was attended both virtually and in person,had an audience of 2000 and was aimed at... The first International Symposium on Dynamics,Monitoring,and Diagnostics was held in Chongqing,China,in April 2022.The Symposium,which was attended both virtually and in person,had an audience of 2000 and was aimed at enhancing the intelligence of condition monitoring for engineering systems.During the Symposium,five keynote addresses were delivered by world leading experts,and this paper is comprised of summaries of these addresses to ensure that the important messages of these speakers are properly on record and readily able to be referenced. 展开更多
关键词 Eigen-structure assignment gear wear gear diagnostics information theory intelligent diagnosis machinery maintenance passive vibration control PROGNOSTICS structural modification
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Bio-inspired polygonal skeleton structure for vibration isolation:Design,modelling,and experiment 被引量:10
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作者 YAN Ge WANG Sen +3 位作者 ZOU HongXiang ZHAO LinChuan GAO QiuHua ZHANG WenMing 《Science China(Technological Sciences)》 SCIE EI CAS CSCD 2020年第12期2617-2630,共14页
Inspired by the safe landing of a cat falling from a high altitude,a bio-inspired polygonal skeleton(BIPS) structure is proposed,and its nonlinear characteristics are systematically studied to explore its potential ap... Inspired by the safe landing of a cat falling from a high altitude,a bio-inspired polygonal skeleton(BIPS) structure is proposed,and its nonlinear characteristics are systematically studied to explore its potential application in the suppression of vibration. The polygon is formed by the skeleton structure of the cat’s entire body and the ground. The BIPS system consists of two symmetrical bionic legs with three robs(as skeleton) and four horizontal springs(as muscle). Two bionic legs are connected through the bearing platform(as spine),which could adjust the distance between the two bionic legs. A theoretical model is developed to characterize its stiffness nonlinearity through geometrical and mechanical analysis. Parameter analysis reveals that the BIPS structure has diverse stiffness,including nonlinear positive stiffness and negative stiffness. By imitating adjustment of leg posture and telescopic function of the spine(control the distance between legs),these flexible stiffness properties can be adjusted by structure parameters. In addition,the load capacity and working range can also be designed by the length of the bars,the initial angle,the mounting position,and the spring stiffness. The experimental setup is established,and the vibration isolation performance under various excitation is tested. The experimental results verify the accuracy of the dynamic model and also show that the proposed BIPS structure can suppress the vibration effectively under a variety of excitations. These peculiarities may provide potential possibility of an innovative approach to passive vibration control and isolation. 展开更多
关键词 bio-inspired polygonal skeleton structure nonlinear stiffness passive vibration isolator
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正弦激励下三磁铁磁悬浮动力吸振器的被动减振性能研究
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作者 陈潇雨 冷永刚 +3 位作者 孙菲 苏徐昆 孙帅令 许俊杰 《Acta Mechanica Sinica》 SCIE EI CAS CSCD 2023年第5期160-172,共13页
本本文设计了一种新型的三磁铁磁悬浮动力吸振器(TMSDVA),并进行了建模和测试首先建立了TMSDVA悬臂梁减振系统的等效动力学模型.基于等效磁化电流理论,建立了非线性磁悬浮力的计算模型,并分析了非线性磁悬浮力的特征.然后用Runge-Kutta... 本本文设计了一种新型的三磁铁磁悬浮动力吸振器(TMSDVA),并进行了建模和测试首先建立了TMSDVA悬臂梁减振系统的等效动力学模型.基于等效磁化电流理论,建立了非线性磁悬浮力的计算模型,并分析了非线性磁悬浮力的特征.然后用Runge-Kutta方法求解系统在正弦激励下的动力学响应.通过对仿真结果的分析发现,适当调整TMSDVA的阻尼系数不仅可以降低TMSDVA的减振效果对激励幅值的敏感性,还可以整体提高TMSDVA的减振效果.最后通过实验验证了理论分析的正确性.综合来看,TMSDVA在工程结构的被动减振方面具有潜在应用价值. 展开更多
关键词 Triple-magnet magnetic suspension dynamic vibration absorber DAMPING Excitation amplitude passive vibration reduction Sinusoidal excitation
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