Development of a model for predicting dynamic response of a sphere at viscoelastic interface: A dynamic Hertz model

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Koruk, H. (2021). Development of a model for predicting dynamic response of a sphere at viscoelastic interface: A dynamic Hertz model. IOP Conference Series: Materials Science and Engineering, 1150(1), 012015. https://doi.org/10.1088/1757-899x/1150/1/012015 Abstract
A model for predicting the dynamic response of a sphere at viscoelastic interface is
presented. The model is based on Hertz contact model and the model for a sphere in a medium.
In addition to the elastic properties of medium and the size of sphere, the model considers the
density of sphere, the density and viscosity of medium, and damping of oscillations of sphere
due to radiation of shear waves. The model can predict not only the effects of the mechanical
properties of medium, the physical properties of sphere, and the amplitude of excitation force
on sphere displacement, but also the effects of these parameters on shift of resonance
frequency. The proposed model can be used to identify the elastic and damping properties of
materials, and to understand the dynamic responses of spherical objects at viscoelastic
interfaces in practical applications.
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1150URI
https://doi.org/10.1088/1757-899x/1150/1/012015https://hdl.handle.net/20.500.11779/1502
https://iopscience.iop.org/article/10.1088/1757-899X/1150/1/012015
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