Resonance Frequencies

resonance in granite and sandstone

“…the natural frequency of the rock increases with the change of vibration mode. For the same kind of rock, the resonance frequency is inversely proportional to mass, while for the different kinds of rocks, the mechanical parameters, such as density, elastic modulus, and Poisson’s ratio, determine the resonance frequency of the rock together. Besides, the shape of the rock is also one of the main factors affecting its resonance frequency.”

from Research on the Resonance Characteristics of Rock under Harmonic Excitation, by Siqi Li, Shenglei Tian, Wei Li , Tie Yan, and Fuqing Bi , Hindawi
 Shock and Vibration, Volume August 2019

Thanks to Jasmine Hirst for research

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