Bending performance of curved sandwich panels comprising GFRP face sheets and web cores: Experimental investigation and theoretical model

Abstract

Composite sandwich-walled shells composed of glass fiber reinforced polymer (GFRP) face sheets and web cores manufactured using a new multistage filament winding (MFW) technique is a type of novel structure. The paper uses a three-point bending test and analytical model to study its mechanical response under lateral external load. The analytical model can accurately predict the deformation and ultimate bearing capacity, and it is shown that the web parameters have a crucial influence on the deformation and failure modes. The results provide a theoretical basis for the parameter design and optimization of this type of curved sandwich panel.