Finite element simulation of low velocity impact loading on a sandwich composite

Abstract

Abstract. Sandwich structure offer more advantage in bringing flexural stiffness and energy absorption capabilities in the application of automobile and aerospace components. This paper presents comparison study and analysis of two types of composite sandwich structures, one having Jute Epoxy skins with rubber core and the other having Glass Epoxy skins with rubber core subjected to low velocity normal impact loading. The behaviour of sandwich structure with various parameters such as energy absorption, peak load developed, deformation and von Mises stress and strain, are analyzed using commercially available analysis software. The results confirm that sandwich composite with jute epoxy skin absorbs approximately 20% more energy than glass epoxy skin. The contact force developed in jute epoxy skin is approximately 2.3 times less when compared to glass epoxy skin. von Mises stress developed is less in case of jute epoxy. The sandwich with jute epoxy skin deforms approximately 1.6 times more than that of same geometry of sandwich with glass epoxy skin. Thus exhibiting its elastic nature and making it potential candidate for low velocity impact application.

Analysis of Impact Behaviour of Sisal-Epoxy Composites under Low Velocity Regime

“…Usage of experimental methods is costly during initial stage of selection process, which consumes lot of time. Top overcome this disadvantage, engineers and designers prefer to use finite element approach [5,[14][15][16][17][18][19][20]. The aim of this study is therefore to develop the conceptual proof and to determine the impact behaviour of sisal-epoxy composite subjected to low velocity impact.…”