213 架線線条の減衰係数(ダンピングの計測と同定)

概要

論文の詳細を見る
The damping coefficient of contact wire greatly affects the motion of overhead line and the contact force fluctuation of pantograph. In this study, the damping characteristics of the wave motion are theoretically analyzed by the wave equation that takes into consideration the damping factor of the wire, and the coefficients are estimated with a real overhead contact line by comparing the amplitudes of the motion of two waves which are measured at different points. It is confirmed that the damping factor of tensioned wire is represented as the sum of the two terms, one proportional to the tension, and the other to the elastic modulus. The measured value (loss factor) of contact wire is about 4×10^<-4>, and that of the stranded wire (messenger wire) is higher than that of contact wire. It is presumed that the influence of damping factors of other components is larger than that of contact wire.
一般社団法人日本機械学会の論文
2002-01-11