Compact energy absorbing cellular structure

Abstract

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.

Investigation on Impact Resistance Foamed Concrete Reinforced by Polypropylene Fibre

“…This condition goes on until plastic stress increase and decreasing of strain rapidly, by means walls porous collapse and air which entrapped in porous release out thus the material denser or densification [4]. All this process means the material is absorbing the energy impact and it relates to plastic energy absorbed by the graded cellular structures [29], that the plastic energy not only reduces the contact force but also dictates the amount of energy consumed in negative work done by the materials. Figure 1 depicts that penetration depth of impactor relates on impact velocity, and the trend shows penetration depth FC without PF is higher than FC with PF.…”