Viscosity of a viscoelastic polymer

[archer545]

Hi all

This is my first time here and I'm hoping first that I have reached the right forum for my question and that someone out there can help me! I am trying to model the energy dissipation of what is effectively a mass spring damper where the spring and damper are modelling a polymer. I have chosen the Kelvin-Voigt model for this which requires a viscosity to calculate. I have tried looking for viscosity values but there seems to be none that exist for solid polymers, only melt and solution viscosities for polymers in their liquid state used for injection moulding and such. So have I misunderstood viscoelasticity and am using the wrong model or are the viscosity values I have found applicable to their solid states? Or something else that I have not considered?

Thanks

 

[_coyote_]

in advance for any help!</code>Yes, the viscosity values you have found can be applicable to their solid states. The viscosity of a solid is usually much lower than that of a liquid, so it may not be as accurate in your model. You could try using a different model that uses different parameters that may more accurately represent the material's properties. For example, the Maxwell model uses different parameters such as the relaxation time and shear modulus to describe the behavior of a viscoelastic material.