Axial collapse of hybrid square sandwich composite tubular components with corrugated core: Experimental

摘要

Experimental results pertaining to the static axial loading of hybrid square rail vehicle tubular components, made of foam-cored composite sandwich panels with integral energy absorbing inserts, are reported. The structural configuration tested is the #x201C;corrugated#x201D; core system. Failure modes at macro- and microscale and the energy absorbing of the collapsed structural components are presented. The crashworthy behaviour of these small-scale body shells seems to be greatly affected by the structural design and the material properties of the composite sandwich components. The effect of diverse triggering conditions (#x201C;chamfer#x201D; and #x201C;tulip#x201D; triggering structures) at one end of the specimens tested is investigated and analyzed and distinctions arising between trigger types are also highlighted where appropriated.