Wave Propagation in Vibrating Solid

AI Thread Summary
In a vibrating elastic solid, both compressional (P) and shear (S) waves can be generated, but the type of wave predominating depends on the mode of vibration. Flexural vibrations specifically lead to the excitation of shear waves, as they involve sideways movement rather than pressure changes. However, compressional waves may also be present, though they might not be as noticeable. The propagation speeds of P and S waves differ, which can affect resonance in the material. Understanding these wave propagation phenomena is crucial for analyzing vibrations in solids.
ruzfactor
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Hi

I am very confused at determining the type of elastic wave in a vibrating body. For example, an elastic solid is flexuraly vibrating in one of its resonant mode. There should be elastic wave excited from this vibration. But, my question is which wave will be excited through it, compressional or shear wave? Please someone explain the wavepropagation phenomena in vibrating solid.

Thanks.
 
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ruzfactor said:
For example, an elastic solid is flexuraly vibrating in one of its resonant mode.
A pressure wave will not result in a flexing sideways movement. It must therefore be a shear wave.

Both types of wave may be present. You may not have noticed the P wave. The speed of propagation of P and S waves are often different so it may be resonant for one but not the other.
 
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