1995 Volume 57 Issue 1 Pages 9-16
To clarify the dynamic viscoelastic properties of paddy field soil, the complex modulus and loss coefficient were measured placing small amount of excitation on the soil, and corresponding effects to the bulk density, frequency and moisture content were examined. It was observed that the complex moduli took higher values together with the increase of the bulk density and with the decrease of the moisture content. The loss coefficient tended to increase with the increase of bulk density, but the effect of moisture content to the loss coefficent did not show clear trend. Also, the higher frequency resulted in the higher complex modulus and loss coefficient. The viscoelastic constants of the Voigt model and the Maxwell model were evaluated, and it was found that these constants were affected by the frequency.
