Resonance frequencies and loss factors of various single-degree-of-freedom systems

Acoustical Science and Technology

Hideo SUZUKI¹ 

[1] Ono Sokki Co.,Ltd.,1-16-1,Hakusan,Midori-ku,Yokohama,226-8507 Japan

关键词: SDOF systems;    Resonance frequency;    Loss factor;    Model analysis;   

DOI  :  10.1250/ast.21.163

学科分类：声学和超声波

来源: Acoustical Society of Japan

【 摘 要 】

References(2)Cited-By(2)A single-degree-of-freedom(SDOF) system with a mass(m), a spring(k), and a damping(c) is a basic mechanical system.It is well known that a complex mechanical system is represented by a combination of infinite number of SDOF systems.The modal analysis theory is based on this principle, but only one type among various types of SDOF systems is presently employed for a modeling of complex systems.When one needs to estimate m, k, and c of a SDOF system from the measurement of the resonance frequency and the loss factor, the relationships between them must be exactly known.Those relationships are known for commonly used SDOF systems, but those for rather unfamiliar types are not known.In this technical report, various types of SDOF systems and their equivalent electrical circuits are listed, and equations that relate the resonance frequencies to the undamped resonance(natural) frequencies and the loss factors are given.It is also shown that, for some type of SDOF systems, some cares must be taken how to interpret the loss factor.

【 授权许可】

Unknown