PS18 中間支持または拘束された長柱の衝撃座屈荷重について(フェロー賞対象ポスターセッション)

概要

論文の詳細を見る
In this research, the dynamic buckling behavior of intermediately supported or clamped long bars were investigated both experimentally and numerically. In the experiments, a free fall drop weight type impact testing machine was employed. Long aluminum bars were axially loaded at the impact velocity of 3m/s and the impact load was measured by means of the load sensing block method. Both ends of the specimen were fully clamped and its middle portion was simply supported or fully clamped. In the numerical analyses, dynamic FEM code 'MSC-Dytran' was used in order to clarify the dynamic buckling phenomena of the intermediately-supported or clamped long bars under the wide range of impact velocity which could not be tested in the experiments. From experimental results, the intermediately-supported or clamped has little influence on dynamic buckling load at the impact velocity of 3m/s although the buckling loads of intermediately supported or clamped long bars become at least twice as large as those of not clamped columns in the quasi-static loading condition. Therefore, the strong velocity dependences of the buckling loads of intermediately- supported or clamped long bars emerged in the dynamic loading condition, and it was also confirmed in the numerical analyses.
一般社団法人日本機械学会の論文
2010-10-09