Cushioning and Energy Absorption Characteristics of Hollow Thin-walled Tubes Under High g Value Impacts
LIU Hao
ZHAO Rui
SHI Yunbo
ZHANG Peng
CHEN Yunan
Abstract：Aiming at the problem that the storage test system is subjected to tens of thousands of g acceleration in a short peri-od of time during the hard target penetration process,a hollow thin-walled tube mechanical protection structure is designed to achieve the function of buffer protection for the test system.The LS-DYNA finite element simulation software is used to simulate five groups of mechanical protection structures with different thicknesses,and the evaluation of the buffering and energy absorption char-acteristics in three aspects,namely,structural deformation,impulse isolation efficiency and energy absorption,is completed.In the platform stage,the best structural deformation and total energy absorption is the 1.0 mm thin-walled tube with an impulse isola-tion efficiency of 46.2%.The results show that the structural deformation of the hollow thin-walled tube is in the axisymmetric stack-ing and shrinking mode,and the mechanical structure of the thin-walled tube with a thickness of 1.0 mm has the best cushioning and energy absorption effect.
Keywords：hollow thin-walled tubefinite element simulationprotective structurecushioning and energy absorption
Publication Date：2025-06-20
Online Publishing Date：2025-09-23(First online date of this platform, not the publication date of the document)
Pages：4( 86-89 )