Forced Vibration of Reed as a Method of Determining Viscoelasticity

Publisher Website
Google Scholar
Abstract
The motion of a clamp‐free reed excited by a sinusoidal displacement of the clamped end was analyzed by rigorously solving the fundamental equation for vibration. The real and imaginary parts of the modulus are given in terms of resonant frequency and band width of the frequency curves. The results are compared with those of Nolle which were obtained in an approximate manner by introducing an equivalent electric circuit. As long as the mechanical loss tangent is smaller than 10−1, as is the case in most high polymers, the practical error caused by the approximation is estimated to be insignificant. Nolle's network was interpreted from a purely mechanical standpoint by means of the fundamental equation for vibration.