学術雑誌論文

学術雑誌論文

text

Journal of Applied Physics. 2004, 95(12), p. 8366-8375

Vibration analysis of an elastic-sphere oscillator contacting semi-infinite viscoelastic solids in resonant ultrasound microscopy

American Institute of Physics

英語

text

2004-06-04

https://doi.org/10.1063/1.1737472

Tian J., Ogi H., Hirao M. "Vibration analysis of an elastic-sphere oscillator contacting semi-infinite viscoelastic solids in resonant ultrasound microscopy", Journal of Applied Physics, 95(12), 8366-8375 (2004) https://doi.org/10.1063/1.1737472.

Resonant-ultrasound microscopy evaluates local Young’s modulus of materials by the resonant-frequency shift of a vibrating oscillator. This study presents a dynamic-contact model to analyze free vibrations of an isotropic elastic-sphere oscillator contacting two semi-infinite viscoelastic solids, which sandwich the sphere. Assuming frictionless contacts and smaller vibrational amplitude, dynamic-contact pressure distributions are obtained with the linearized maximum contact pressure and contact radius. Combining the sphere oscillation and the solid motions through contact-displacement boundary conditions, resonant frequencies of the elastic sphere are obtained. Unlike the quasistatic model, this dynamic model agrees well with the measurements.

This article may be downloaded for personal use only. Any other use requires prior permission of the author and AIP Publishing. This article appeared in Journal of Applied Physics, 95(12), 8366-8375 (2004) and may be found at https://doi.org/10.1063/1.1737472.

84220

Vibration analysis of an elastic-sphere oscillator contacting semi-infinite viscoelastic solids in resonant ultrasound microscopy

American Institute of Physics

英語

2004-06-04

Journal of Applied Physics

95

12

8366

8375

https://doi.org/10.1063/1.1737472

https://hdl.handle.net/11094/84220