AN APPROXIMATE EVALUATION OF THE PHENOMENOLOGICAL AND STATE COEFFICIENTS FOR VISCO-ANELASTIC MEDIA WITH MEMORY

作者：Ciancio Armando^*

来源：Polytechnical University of Bucharest Scientific Bulletin Series A- Applied Mathematics and Physics, 2011, 73(4): 3-14.

• Relaxation phenomena
• Dynamic moduli
• Viscoanelastic media

In a previous paper we have studied some properties of the phenomenological and slate coefficients for a viscoanelastic medium of order one with memory. In that case we have used sometimes numerical approximation. In this paper we study the same coefficients by mean of approximate dynamic moduli expression for low and high frequency and we obtain some properties for viscous coefficients which are connected only on the choice of maximum value of the region of low frequency, In particular we show that the frequency corresponding to minimum value of the viscous coefficient is function of the maximum frequency value in the region of low frequency. Analogous studies have been performed in the region of high frequency. It is shown that the physical implications of the results are in agreement with experiments.

• 出版日期2011