Passive Vibration Isolation

Published on Jan 1, 2003
· DOI :10.1115/1.1849173
Eugene Rivin7
Estimated H-index: 7
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Last. Li-Qun Chen (SHU: Shanghai University)H-Index: 51
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Abstract null null Performance enhancement of vibration isolation of a circular ring by means of a shape memory alloy (SMA) wire rope is investigated. The restoring and the damping force of the SMA are approximated by two cubic polynomials. The ring with the SMA wire along the horizontal diametral line is mathematically modeled by two coupled nonlinear partial differential equations with the boundary conditions. The nonlinear partial differential equations are discretized via the Galerkin method...
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#1Tao Yang (NPU: Northwestern Polytechnical University)
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Last. Daniel J. Inman (UM: University of Michigan)H-Index: 91
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Limited by the structure, the high-efficiency vibration energy harvesting and vibration suppression have always been a theoretical bottleneck and technical challenge in this field. The nonlinear design of the new vibration structure is an indispensable link in the development of vibration energy harvesting and vibration suppression technologies. Nonlinear technologies not only have the potential to improve the efficiency of the energy harvesters by increasing the useful frequency bandwidth and o...
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#1Guilin Wen (GU: Guangzhou University)H-Index: 22
#2He Junfeng (GU: Guangzhou University)H-Index: 2
Last. Lin Yu (GU: Guangzhou University)
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Vibration isolation systems with quasi-zero stiffness (QZS) performance have been widely studied because of their characteristics: high static stiffness and low dynamic stiffness. However, the effective displacement range of QZS is usually so small that strongly limits its application existing in real engineering. Thus, this study’ main innovation is to attempt to expand the effective displacement range of the QZS system via a semi-active control strategy. We first present a novel quasi-zero sti...
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#1Zhuang Dong (UNNC: The University of Nottingham Ningbo China)
#2Dimitrios Chronopoulos (University of Nottingham)H-Index: 16
Last. Jian Yang (UNNC: The University of Nottingham Ningbo China)H-Index: 9
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Abstract This study investigates the wave dissipation properties of continuous metamaterial beam structures with embedded inerter-based devices and possible negative-stiffness elements. The vibration attenuation performance of using inerters is evaluated by examining the system frequency response functions and the propagating wave damping ratios. The results show that the response amplitude can be significantly reduced in the targeted frequency ranges. Additionally, anti-resonance frequencies an...
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#1O. V. Kendzera (NASU: National Academy of Sciences of Ukraine)H-Index: 2
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It is known that soil massifs can amplify or weaken seismic waves generated by earthquakes. Therefore, the problem of studying the impact of soil deposits on the passage of seismic waves is important in terms of the facilities in operation and the design of new earthquake-resistant objects. Soil deposits, which are allotted for building, are mainly layered. In addition, the materials in these layers are also significantly heterogeneous. To describe the dynamics of inhomogeneous soil massif, the ...
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#1Alexander D. Shaw (Swansea University)H-Index: 12
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Abstract In some applications, such as ground vibration testing in the aerospace industry, it is of interest to observe the modal behaviour of a slender structure while it is statically loaded. One way of statically loading such a structure is to suspend masses using very soft springs. If the springs are linear, then this results in an extremely large static deflection of the springs. This problem could be overcome by dynamically isolating the masses using quasi-zero stiffness (QZS) springs. Thi...
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#1Yue Qiu (NU: Northeastern University)H-Index: 2
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In this study, a novel criterion known as the comprehensive transmissibility is proposed to estimate the isolation performance of nonlinear isolation systems under complex loading excitations. A combined quasi-zero-stiffness (QZS) isolator is enumerated, and the comprehensive performance of other common isolator systems and the existing QZS system is analyzed. Based on the normalized differential equations of the isolation system, the isolation performances of different isolation systems are stu...
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#2Emiliano Pereira (University of Alcalá)H-Index: 11
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This work studies the influence of a vibration isolator on the response of a flexible base structure. Two strategies are compared: passive and active vibration isolation (PVI, AVI). Although the multiple advantages of AVI over PVI techniques are well known, their effect in the base structure has not to date been compared. This interaction has an important role in the performance of the general control system, especially when the vibration isolation system is not the only system on the base struc...
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#4Qi Zhou (HUST: Huazhong University of Science and Technology)
The hexagonal periodic structure of the honeycomb is a magic product of nature and shows great mechanical potential. In this work, a type of metamaterial vibration isolator with a honeycomb structure is proposed. The strain, deformation, and natural frequency of the vibration isolator are calculated by the two-dimensional plane finite element model and the simulation accuracies are validated by the experiments. As the design of the metamaterial vibration isolator involves time-consuming finite-e...
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#1Rong Zeng (Hunan University)H-Index: 2
#2Guilin Wen (Hunan University)H-Index: 11
Last. Gang Zhao (Hunan University)
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Vibration reduction has always been one of hot and important topics in mechanical engineering, especially for the special measurement instrument. In this paper, a novel limb-inspired bionic structure is proposed to generate negative stiffness and design a new quasi-zero stiffness isolator via torsion springs, distinguishing from the existing tension spring structures in the literature. The nonlinear mathematical model of the proposed structure is developed and the corresponding dynamic propertie...
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