種々の1自由度系の共振周波数と損失係数について

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概要

• 論文の詳細を見る

• 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 system, some cares must be taken how to interpret the loss factor.

• 社団法人日本音響学会の論文

著者

• Suzuki Hideo

  Ono Sokki Co. Ltd.

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