In class, we have derived Voigt model for polymeric materials. Please derive the loss tangent, tan() as a function of frequency, w, shear modulus, G and viscosity, nin a dynamic shear experiment.

 

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20 Strain, y = sin (at + 5) y=% sin (wt). 0 wt = /2 wt = F0 Stress at = 3/2 wt = 2 Time x frequency, at 20 Strain, y = sin (at + 5) y=% sin (wt). 0 wt = /2 wt = F0 Stress at = 3/2 wt = 2 Time x frequency, at