Tradeoff between mass sensitivity and performance in quasi-zero stiffness vibration isolators

IF 1.3 4区 医学 Q3 AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY Noise & Health Pub Date : 2023-05-25 DOI:10.3397/nc_2023_0139
P. Gilmore, U. Gandhi, S. M. S. Shaihan, R. Rangarajan
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Abstract

Quasi-zero stiffness isolators are a promising technology to reduce vibration transmission over a large frequency range while maintaining passive operation and low cost. Many different types of QZS isolators have been demonstrated utilizing a variety of mechanical, pneumatic, and magnetic components. While some of these types have their own unique challenges, other challenges are more general. Two of these challenges are mass sensitivity and hysteresis in the load-deflection curve caused by snap-through buckling, friction, or structural damping. This work investigates the impact of force-deflection hysteresis on isolation performance through experimental techniques. Results show that increasing hysteresis reduces the mass sensitivity but worsens the isolation performance at low frequencies. A tradeoff must be made between these two aspects but can be overcome by shifting the QZS region to difference forces. A simple method to achieve this adaptability exists for certain types of QZS structures, therefore enabling a variety of practical applications within a certain design window.
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准零刚度隔振器质量灵敏度与性能的权衡
准零刚度隔振器是一种很有前途的技术,可以在大频率范围内减少振动传输,同时保持被动运行和低成本。许多不同类型的QZS隔离器已被证明利用各种机械,气动和磁性元件。虽然其中一些类型有自己独特的挑战,但其他挑战更为普遍。其中两个挑战是质量敏感性和负载-挠度曲线中的滞后,这是由屈曲、摩擦或结构阻尼引起的。本文通过实验技术研究了力-挠度滞回对隔振性能的影响。结果表明,增大磁滞会降低质量灵敏度,但会使低频隔离性能恶化。必须在这两个方面之间进行权衡,但可以通过将QZS区域转移到不同的力来克服。对于某些类型的QZS结构,存在一种简单的方法来实现这种适应性,从而在一定的设计窗口内实现各种实际应用。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
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来源期刊
Noise & Health
Noise & Health AUDIOLOGY & SPEECH-LANGUAGE PATHOLOGY-PUBLIC, ENVIRONMENTAL & OCCUPATIONAL HEALTH
CiteScore
2.10
自引率
14.30%
发文量
27
审稿时长
6-12 weeks
期刊介绍: Noise and Health is the only International Journal devoted to research on all aspects of noise and its effects on human health. An inter-disciplinary journal for all professions concerned with auditory and non-auditory effects of occupational, environmental, and leisure noise. It aims to provide a forum for presentation of novel research material on a broad range of topics associated with noise pollution, its control and its detrimental effects on hearing and health. It will cover issues from basic experimental science through clinical evaluation and management, technical aspects of noise reduction systems and solutions to environmental issues relating to social and public health policy.
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