Compact energy absorbing cellular structure

The increasing demand of superior energy absorbing structures and materials to meet the stringent design criteria and higher safety standards for confined operating spaces leads to the advent of efficient compact cellular structures. This paper presents a detailed study of an intelligent and compact graded cellular structure that alleviates the impact damage(s) by undergoing a controlled stepwise deformation process by wisely utilizing the stroke. The structure's geometry is observed in the cross-section of a banana peel that has a specific graded cellular packing in a confined space. This packing enables the peel to protect the internal soft core from external impacts. The same cellular pattern is used to construct the structure. The energy absorbing characteristics of the structure are evaluated with respect to a solid section by means of non-linear finite element simulations using ABAQUS. The structure mitigates the dynamic collapse damage(s) and acts as an effective energy absorber over a solid section.