The Anelasticity in the Spring-Mass System

概要

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The anelasticity of elastic substances now attracts an intense attention of physicists who attempt more precise definition of the Newtonian constant of gravitation and also the detection ofgravitational waves. In this context a close understanding of the anelasticity seems to be hasted.We in this paper propose a new dynamical model of the anelasticity which closely reflects themotion of impurities, grain walls, crystalline defects and so on embodied in elastic substancesand subjected to applied stress. Recently Ueda and Sadamoto observed an anomalous frequencydependence of the effective-mass in the spring-mass system, which seemed due to the anelasticity and turned out not explainable in terms of a IISLIII visco-elastic model. The new model isshown to be consistent with their experiment and the effective-mass-ratio analysis used by themis demonstrated to be very powerful to determine tlae anelasticity parameters involved.
社団法人日本物理学会の論文
1996-12-15