Design of dimpled tubular structures for energy absorption

In this study a novel type of tubular structure was proposed, in which predesigned ellipsoidal dimples were introduced into conventional circular tubes. The influence of various design parameters of the dimples on the mechanical properties was extensively investigated by finite element modelling and was experimentally validated by quasi-static tests on 3D printed brass tubes. The results showed that properly designed dimpled tubes had substantially lower initial peak force and remarkably less fluctuation in the crushing force than circular tubes, without significantly sacrificing the mean crushing force.

[1]  P D Soden,et al.  Inextensional collapse of thin-walled tubes under axial compression , 1977 .

[2]  J. M. Alexander.  AN APPROXIMATE ANALYSIS OF THE COLLAPSE OF THIN CYLINDRICAL SHELLS UNDER AXIAL LOADING , 1960 .

[3]  Koryo Miura,et al.  Proposition of Pseudo-Cylindrical Concave Polyhedral Shells , 1969 .

[4]  Qing Li,et al.  Crashworthiness analysis and optimization of sinusoidal corrugation tube , 2016 .

[5]  Jiayao Ma,et al.  Energy Absorption of Thin-Walled Square Tubes With a Prefolded Origami Pattern—Part I: Geometry and Numerical Simulation , 2014 .

[6]  G. Lu,et al.  Quasi-static axial compression of thin-walled circular aluminium tubes , 2001 .

[7]  Tongxi Yu,et al.  Energy Absorption of Structures and Materials , 2003 .

[8]  Yi Min Xie,et al.  Energy absorption of thin-walled tubes with pre-folded origami patterns: Numerical simulation and experimental verification , 2016 .

[9]  Norman Jones,et al.  Dynamic axial crushing of circular tubes , 1984 .

[10]  A. A. Singace.  Axial crushing analysis of tubes deforming in the multi-lobe mode , 1999 .

[11]  W. Abramowicz.  The effective crushing distance in axially compressed thin-walled metal columns , 1983 .

[12]  K.R.F. Andrews,et al.  Classification of the axial collapse of cylindrical tubes under quasi-static loading , 1983 .

[13]  Norman Jones,et al.  Dynamic progressive buckling of circular and square tubes , 1986 .

[14]  O. Hopperstad,et al.  Validation of constitutive models applicable to aluminium foams , 2002 .

[15]  A. A. Singace,et al.  Behaviour of axially crushed corrugated tubes , 1997 .

[16]  Zhong You,et al.  Quasi-static axial crushing of thin-walled tubes with a kite-shape rigid origami pattern: Numerical simulation , 2016 .