周辺固定された二層積層ハニカムコアサンドイッチパネルの局部圧縮疲労

摘要

The fatigue property of a honeycomb core sandwich panel (hereafter, HSP for brevity) has been studied in consideration of usage as a floor panel. In previous papers, fundamental properties were reported ; 1) A fatigue life as the floor panel was defined from the growth curve of dent depth. 2) It was possible to design by calculating the stress of crack initiation site on dent. 3) A fatigue damage level was predicted from the dent depth. In this study, it was attempted to study the local compression fatigue property of peripherally clamped double layer honeycomb core sandwich panel for the sake of wide application. Obtained results were summarized as the follows ; 1) The higher a rigidity of HSP was, the shorter a fatigue life was. 2) The taller a core height near an indenter was, the deeper a depth of dent was when HSP had been fractured except a single layer HSP. 3) There were two steady regions in double layer IISPs. In consideration of the fatigue life and rigidity except self-weights, the double layer HSP that the core height near indenter is small is superior to the single layer HSP.%蜂の巣状のコア材を上下から二枚の平板（以下表面rn板と称す）で挟み，接合した構造材料であるハニカムrnコアサンドイッチパネル（以下HSPと称する）rnぼ，軽量で比強度，比剛性に優れているので，航rn空機の床材や車両の壁材等に使用されている．