Multi-stage series column cell body impact load energy absorption structure

Abstract

The invention discloses a multi-stage series column cell body impact load energy absorption structure which comprises a hollow pipe body, the hollow pipe body is of a round or oval or polygonal structure, multiple layers of hollow column cell bodies are arranged in the length direction of the hollow pipe body, and a supporting base plate is arranged between every two adjacent layers of hollow column cell bodies. The two ends of each supporting base plate are spaced from the side wall of the hollow pipe body, and the supporting base plates can move up and down in the cavity of the hollow pipe body; each layer of hollow column cell body comprises a plurality of hollow column cell units which are arranged at intervals; and an upper force bearing plate is arranged on the hollow column cell body on the uppermost layer. According to the energy absorption structure, a multi-layer hollow column cell structure is adopted, when external impact loads and the like act on the structure, the loads firstly act on the upper force bearing plate or the force transmission support and then vertically act on a sandwich structure formed by the multi-layer hollow column cells, and the loads are transmitted in the sandwich structure; and shock wave intensity is effectively unloaded through remarkable plastic deformation of each unit, and therefore the effect of energy absorption and buffering is achieved.

Description

technical field [0001] The invention relates to a cylindrical energy-absorbing structure, in particular to a multi-stage series-connected cylindrical damping energy-absorbing device formed by connecting a plurality of cylindrical energy-absorbing structures in series. Background technique [0002] Industrial production, equipment manufacturing, aerospace, and military protection have increasingly high demand for new composite materials that are lightweight, high-strength, energy-absorbing, and vibration-reducing. The sandwich material is generally made of two layers of high-strength thin panels and the middle lightweight core layer by welding or gluing, etc. It combines the advantages of the panel material's bending resistance, strong tensile capacity and the core material's plastic deformation and energy absorption. , and take advantage of the advantages of light weight, high specific strength, high specific stiffness, energy absorption and vibration reduction of the sandwi...

AI Technical Summary

Problems solved by technology

[0006]However, these two kinds of sandwich composite materials with cylindrical cell structure are single-layer structures, the structure is relatively single, the energy absorption capacity is not high, and it cannot achieve multi-layer structure. Energy absorption and dissipation requirements for impact loads

[0007] In addition, these two types of sandwich composite materials with a cylindrical cell structure are not used in damping energy-absorbing devices, or are not used in combination in damping energy-absorbing devices , did not give full play to the superimposed damping and energy-absorbing effect of its series-combined group, and still cannot meet the actual use needs of damping and energy-absorbing and energy-absorbing buffer under the condition of large impact load (shock wave)

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