Experimental Study On The Impact Energy Dissipation Characteristics Of Corrugated Tube Filled With Polyethylene Foam

Polyethylene foam single filled paper corrugated tube can dissipate external energy through the deformation of the corrugated tube and polyethylene foam under axial compression and impact,it is a new type of non-metallic filled tube tbuffer energy absorption structure.In this paper,the cushioning energy absorption characteristics of polyethylene foam single filled four or five and hexagonal corrugated tubes under axial static compression and drop impact dynamic compression are experimentally an alyzed,the effects of structural parameters and load parameters on the energy absorption characteristics of cushioning were studied.The main research contents of this paper include:Firstly,the static compression test of polyethylene foam single filled regular polygonal paper corrugated tu be was carried out,the load-displacement data and stress-strain curves a re obtained,the energy absorption indices are calculated.Then,the influence of geometric parameters including the direction of tu be,the shape of tube cross section and the ratio of tube length to the en ergy absorption characteristics of polyethy lene foam is studied by energy absorption evaluation index.Secondly,the axial dr op impact characteristics of polyethylene foam single filled regular polygonal paper corrugated tube were tested,acceleration-time curve,displacement-time curve and stress-strain curve are obtained.The influence of structural param eters(tube orientation,tube cross section shape,tube length ratio)and load parameters(drop impact energy and drop impact mass)on the cushioning energy absorption characteristics of polyethylene foam single filled corrugated tube were compared and analyzed.Finally,the energy absorp tion characteristics of axial static compression test and drop impact compression test are compared and analyzed.