Measurement of damping properties of damping material

Chenguang Cai; Qiao Sun

doi:10.1117/12.885843

28 December 2010 Measurement of damping properties of damping material

Chenguang Cai, Qiao Sun

Proceedings Volume 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation; 75440S (2010) https://doi.org/10.1117/12.885843
Event: Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 2010, Hangzhou, China

Abstract

An oblate solid cylinder damping material specimen is used to construct three damping systems with three different additional masses. The specimen is excited by an electromagnetic shaker in the vertical direction, and the specimen excites the additional mass vibrating. The damping properties of the damping material change as the additional mass and the exciting magnitude change. Not only the traditional damping properties, such as the damping ratio, the vibration transfer rate from excitation to additional mass, and resonant frequency, but also the nonlinear properties of the damping system with different masses are measured to evaluate the damping specimen. The magnitude-frequency characteristics of vibration transfer rate with different additional masses are measured under constant stable excitation and linear vibration state over a frequency range which includes the resonant frequency of the fundamental mode. The nonlinear vibration transfer properties with different additional masses are measured and investigated under higher vibration magnitude. Experiment results indicate that both linear and nonlinear damping properties of the damping system change as the exciting magnitude and the additional mass change.

Citation Download Citation

Chenguang Cai and Qiao Sun "Measurement of damping properties of damping material", Proc. SPIE 7544, Sixth International Symposium on Precision Engineering Measurements and Instrumentation, 75440S (28 December 2010); https://doi.org/10.1117/12.885843

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