機関車の上下動について : 機関車の動揺について第1報

概要

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An effect of rails on the vertical oscillations of locomotive is theoretically investigated under the following assumptions : rails are infinitely seamless elastic bars supported by elastic foundation (with distributed spring constant k) and locomotive is an oscillating system with body M, wheel m and spring K between them. This analysis is carried out for both cases of free oscillations, and forced oscillations caused by unbalanced forces of the locomotive engine, at constant speed V. The results obtained are as follows : deflections of rails at loaded points increase as V^2. Periods of vertical oscillations also slightly increase as V^2. Two waves with different velocities propagate along rails. And by introducing the dynamic factors and the effective mass of rail, we can simplify the problems, etc.
社団法人日本機械学会の論文
1951-12-20