Simple rheological models
Viscoelastic materials - Reduction of noise and vibrations

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Simple rheological models


Viscoelastic materials - Reduction of noise and vibrations

Authors : Luigi GARIBALDI, Menad SIDAHMED

Publication date: October 10, 2007 | Lire en français

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2. Simple rheological models

The structural or hysteretic damping model [equation () ] does not always correspond to the actual behavior of materials, as η often depends on frequency and temperature η = η (ω, T ). What's more, it doesn't predict in particular the response to an impulse (which involves a wide range of frequencies). As a result, other models have been developed; they are made up of simple, well-known elements such as the spring and the viscous damper, which respectively give a force proportional to the strain and the strain rate (figures 4 a and b). The...

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