3. Amortization
3.1 Principles
The aim of damping vibro-acoustic loads is not only to reduce their ability to propagate, but also to dissipate them in the strict sense, i.e. degrade them into heat. In the case of cyclic quantities (displacements and vibratory stresses), this means introducing a hysteresis phenomenon into the dynamic elasticity law linking stresses and displacements, and thus making the overall Young's model of the medium complex.
The equation shows that :
the energy dissipated by a viscoelastic material is proportional to thevibratory acceleration ;
the energy dissipated by a viscous material is proportional to the vibration speed ;
the energy dissipated by the friction, subject to a threshold...
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Amortization
Static and dynamic stiffness
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"Noise and vibration"
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