Study of the factors influencing material properties on energy absorbing devices

Abstract

A pre-folded energy absorption device is used to support energy absorption in mining engineering. Due to the change of material properties of the pre-folded energy absorption device during steel processing, the force-displacement curves of the quasi-static compression test and numerical simulation are inconsistent. In this paper, ABAQUS numerical simulation method is used to study the influence of material properties changes in each region on the force-displacement curve of the energy absorption device. It is found that the material properties of each area have an effect on the first drop stage and the second rise stage of the force-displacement curve. M area of the material properties change has an effect on the peak force-displacement curve; from the perspective of the evaluation index, the change of material properties in each area has an improvement effect on the average load, load efficiency, and specific energy absorption. O1-O2-M has the highest improvement effect, which is 34.27 %, 32.81 %，and 34.30 % higher than IM, respectively.