A novel efficient energy absorber with free inversion of a metal foam-filled circular tube

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外文摘要：In this paper,a novel efficient energy absorber with free inversion of a metal foam-filled circular tube(MFFCT)is designed,and the axial compressive behavior of the MFFCT under free inversion is studied analytically and numerically.The theoretical analysis reveals that the energy is mainly dissipated through the radial bending of the metal circular tube,the circumferential expansion of the metal circular tube,and the metal filled-foam compression.The principle of energy conservation is used to derive the theoretical formula for the minimum compressive force of the MFFCT over free inversion under axial loading.Furthermore,the free inversion deformation characteristics of the MFFCT are analyzed numerically.The theoretical steady values are found to be in good agreement with the results of the finite element(FE)analysis.The effects of the average diameter of the metal tube,the wall thickness of the metal tube,and the filled-foam strength on the free inversion deformation of the MFFCT are considered.It is observed that in the steady deformation stage,the load-carrying and energy-absorbing capacities of the MFFCT increase with the increase in the average diameter of the metal tube,the wall thickness of the metal tube,or the filled-foam strength.The specific energy absorption(SEA)of free inversion of the MFFCT is significantly higher than that of the metal tube alone.

外文关键词：

metal foam-filled circular tube(MFFCT)free inversionload-carrying capacityenergy absorption

作者：

Jianxun ZHANG、Jinwen BAI

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作者单位：

State Key Laboratory for Strength and Vibration of Mechanical Structures,School of Aerospace Engineering,Xi'an Jiaotong University,Xi'an 710049,China

基金：

National Natural Science Foundation of ChinaNational Natural Science Foundation of ChinaState Key Laboratory of Automotive Safety and Energy of China

项目编号：

1227229011872291KFY2202

出版年：

2024

DOI：

10.1007/s10483-024-3068-9

应用数学和力学(英文版)

上海大学

应用数学和力学(英文版)

影响因子：0.294

ISSN：0253-4827

年,卷(期)：2024.45(1)

参考文献量39