Comparison of grooved and non-grooved conical energy absorbers under impact loading

In this article thin-walled conical tube has been studied as a kind of mechanical energy absorber. By making groove on the structure’s wall, the effects of peripheral groove on the process of crushing and absorption ability have been investigated. Distance and geometry of the grooves are the main variables through this study, which include rectangular and triangular geometry. This means that by considering numbers of different grooves from both mentioned type, crushing has been studied under quasi-static axial loading condition. Eventually the results of rectangular and triangular grooved cone with non-grooved have been compared. The investigation includes models of computer simulations for all states and comparing basic answers with existence computer models and also the analytical modelling. In fact the purpose of this study is investigating the absorption ability and more controlling the process of crushing in conical energy absorbers which tried to optimize by executing peripheral grooves on the cone’s wall. The initial peak load and mean axial crushing load are the main factors of the study, which showed by increasing tension concentration in different geometries of the grooves, the initial peak load and the amount of absorbed energy will decrease.