衝突の衝撃荷重に及ぼす多重反射応力波の影響 : アンビルを介しての棒と球の間接衝突(<小特集>衝撃小特集)

概要

論文の詳細を見る
The free end of an anvil which is in contact with a sphere undergoes the normal collinear impact by traveling bar. If the length of the anvil is amall, several wave reflections may occur in the anvil. In this paper, the impact load of sphere caused by tha reflected waves was theoretically analyzed by a wave equation and tha Hertz's contact theory. Since it is difficult to theoretically evaluate the reflection coefficient of wave at the discontinuous section where the anvil and the sphere are in contact, it was experimentally determined by observing the reflected wave passing through the anvil by a strain gage method. The particle velocity due to reflected wave was related to the load which the anvil transmits into the sphere. When the reflected wave arrives at the end of anvil defore the load of sphere arisen by the former wave reaches the maximum value, impact load should be evaluated by using the particle velocity added to the first. On the other hand, when the reflected wave comes after the maximum value of load, the next particle velocity only affects the load tranamitted into the aphere. When the circular cylinder with hemisphere end was used in place of the sphere in the experment, the impact behavior depends only on the curvature of hemisphere and not on the shape of other part, Because the ratio of length to diamenter of the cylinder was not so large. As the numder of repetitions of reflected wave increased, the maximum value of impact load grew up, bur the acting period of force decreased. The analytical results of impact load were in agreement with the experimenta.
1990-12-15

衝突の衝撃荷重に及ぼす多重反射応力波の影響 : アンビルを介しての棒と球の間接衝突(<小特集>衝撃小特集)

スポンサーリンク

概要

著者

関連論文

スポンサーリンク