段付棒に作用する衝撃力の測定理論

概要

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The true value of impact force, in high speed deformation tests of metals, is commonly measured by the use of the Hopkinson-bar method. But, a defect of this method is the restriction of measurable time because of the length of the bar. One of the authors suggested constructing a measuring theory for impact force acting on a bar with uniform cross sectional area, based on the theory of the propagation of longitudinal elastic stress waves. From the stresses detected at two points on the bar, two stress waves travelling in opposite directions along the bar axis are separated, and the impact force is estimated, without the restriction of the measuring time. This paper presents a new theory for measuring the impact force which occurs on a bar having two different diameters. The results of the experiments clearly confirm the correctness and usefulness of this theory.
一般社団法人日本機械学会の論文
1986-04-25