Design and Analysis of Electromagnetic Quasi-zero Stiffness Vibration Isolator
نویسندگان
چکیده
Abstract Introduction To improve the low frequency isolation capability of vibration system, a kind electromagnetic quasi-zero-stiffness (QZS) isolator was designed. Materials and methods The negative stiffness spring paralleled with linear positive to achieve state QZS. nonlinear dynamic model established. Through combination theoretical formula simulation analysis, force expression obtained. amplitude-frequency responsecharacteristics transmissibility solved by harmonic balance method, effects system parameters on amplitude - characteristics analyzed. Conclusion results show that new has better performance than decreased damping ratio excitation make superior.
منابع مشابه
Analysis and wafer-level design of a high-order silicon vibration isolator for resonating MEMS devices
This paper presents the analysis and preliminary design, fabrication, and measurement for mechanical vibration-isolation platforms especially designed for resonating MEMS devices including gyroscopes. Important parameters for designing isolation platforms are specified and the first platform (in designs with cascaded multiple platforms) is crucial for improving vibration-isolation performance a...
متن کاملVariable stiffness and damping MR isolator
This paper presents the development of a magnetorheological (MR) fluid-based variable stiffness and damping isolator for vibration suppressions. The MR fluid isolator used a sole MR control unit to achieve the variable stiffness and damping in stepless and relative large scope. A mathematical model of the isolator was derived, and a prototype of the MR fluid isolator was fabricated and its dyna...
متن کاملPlanar analysis of a quasi-zero stiffness mechanism using inclined linear springs
Negative stiffness mechanisms have seen renewed attention in recent years for their ability to reduce the resonance frequency of a structure without impeding their load-bearing ability. Such devices are often described as having quasi-zero stiffness when the negative stiffness is tuned to reduce the overall stiffness of the system as close to zero as possible without creating an instability. Th...
متن کاملFree Vibration Analysis of Variable Stiffness Composite Laminates with Flat and Folded Shapes
In this article, free vibration analysis of variable stiffness composite laminate (VSCL) plates with flat and folded shapes is studied. In order to consider the concept of variable stiffness, in each layer of these composite laminated plates, the curvilinear fibers are used instead of straight fibers. The analysis is based on a semi-analytical finite strip method which follows classical laminat...
متن کاملBase isolator with variable stiffness and damping: design, experimental testing and modelling
Vulnerability in base isolation system of civil structures originated from passive nature of the rubber material raises the urgency of developing smart base isolation system with adaptive and controllable properties, i.e. variable stiffness and damping. To address this issue, this paper presents comprehensive investigations on a novel adaptive base isolator, including design, experimental testi...
متن کاملذخیره در منابع من
با ذخیره ی این منبع در منابع من، دسترسی به آن را برای استفاده های بعدی آسان تر کنید
ژورنال
عنوان ژورنال: Journal of vibration engineering & technologies
سال: 2022
ISSN: ['2523-3920', '2523-3939']
DOI: https://doi.org/10.1007/s42417-022-00569-x