The collapse of thick-walled metal tubes with wide external grooves as controllable energy-dissipating devices

Abstract

This article focuses on the experimental and theoretical investigation of the axial crushing behaviour of thick-walled tubes with a number of wide grooves, cut from their outer surface, under both static and dynamic loading. While this structure is subjected to axial loading, plastic deformation occurs within the space of each wide groove, and thick portions (grooveless areas) control and stabilize the collapsing of grooved thick-walled tubes. Therefore, the kinetic energy is dissipated by the plastic collapsing of the structure between grooves. In the present study, quasi-static compression tests of specimens with various geometric parameters are performed. Dynamic tests of some specimens using a drop hammer apparatus are also carried out to study the dynamic effects on the collapsing and energy absorption behaviour of the shock absorber. Numerical simulations of axial crushing of the shock absorber under both quasi-static and impact loading, using LS-DYNA finite-element explicit code, are also carried out in this article, and their results are verified with experimental findings. Based on experimental studies, an analysis with consideration of strain hardening effects to predict mean crushing load and energy absorption of the structure under axial compression is developed. Through the performed experimental, numerical, and analytical studies, major parameters in the design of the shock absorber are characterized and possible collapse modes of deformation during axial crushing of the structure are identified. In the present study, experimental and theoretical studies show that the introduced structure can be considered as an efficient energy-dissipating device since it provides favourable crashworthiness characteristics.

Keywords

thick-walled tubes thin-walled tubes external grooves energy absorbers dynamic and quasi-static loading

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References

Johnson

Ried

S. R.

, Metallic energy dissipating systems Appl. Mech. Rev. 31 (1978): 277–288.

Alghamdi

A. A. A.

, Collapsible impact energy absorbers: An overview Thin-Walled Struct. 39 (2001): 189–213.

Jones

, Structural impact (Cambridge: Cambridge University Press 1989).

Reid

S. R.

Harrigan

J. J.

, Transient effects in the quasi static and dynamic inversion and nosing of metal tubes Int. J. Mech. Sci. 40 (1998): 263–280.

Reddy

T. Y.

, Tube inversion–an experiment in plasticity Int. J. Mech. Eng. Edu. 17 (1989): 277–291.

Al-Hassani

S. T. S.

Johnson

Lowe

W. T.

, Characteristics of inversion tube under axial loading Int. J. Mech. Sci. 14 (1972): 370–381.

Kinkead

A. N.

, Analysis for inversion load and energy absorption of a circular tube Int. J. Strain Analysis 18 (1983): 177–188.

Stronge

W. J.

T. X.

Johnson

, Long stroke energy dissipation in splitting tubes Int. J. Mech. Sci. 25 9–10 (1983): 637–646.

Reddy

T. Y.

Reid

S. R.

, Axial splitting of circular metal tubes Int. J. Mech. Sci. 28 2 (1986): 111–131.

10.

Leu

, On the axial splitting and curling of circular metal tubes Int. J. Mech. Sci. 44 (2002): 2369–2391.

11.

Andrews

K. R. F.

England

G. L.

Ghani

, Classification of axial collapse of circular tubes under quasi static load Int. J. Mech. Sci. 13 1 (1999): 687–696.

12.

Bardi

F. C.

Yun

H. D.

Kyriakides

, On the axisymmetric progressive crushing of circular tubes under axial compression Int. J. Solids Struct. 40 (2003) 3137–3155.

13.

Abramovicz

Jones

, Dynamic axial crushing of circular tubes Int. J. Impact Eng. 2 3 (1984): 263–281.

14.

Abramovicz

Jones

, Transition from initial global bending to progressive buckling of tubes loaded statically and dynamically Int. J. Impact Eng. 19 5/6 (1997): 415–437.

15.

Karagiozava

Jones

, Inertia effects in axisymmetrically deformed cylindrical shells under axial impact Int. J. Impact Eng. 24 (2000): 1083–1115.

16.

Karagiozava

Jones

, Influence of stress waves on the dynamic progressive and dynamic plastic buckling of cylindrical shells Int. J. Solids Struct. 38 (2001): 6723–6749.

17.

Guillow

S. R.

, Quasi-static axial compression of thin-walled circular aluminum tubes Int. J. Mech. Sci. 43 (2001): 2103–2123.

18.

Hsu

S. S.

Jones

, Quasi-static and dynamic axial crushing of thin-walled circular stainless steel, mild steel and aluminum alloy tubes Int. J. Crashworthiness 9 (2004): 195–217.

19.

Shakeri

Mirzaeifar

Salehghaffari

, New insights into the collapsing of cylindrical thin-walled tubes under axial impact load Proc. IMechE, Part C: J. Mechanical Engineering Science 221 8 (2007): 869–885 DOI: 10.1243/09544062JMES562.

20.

Daneshi

G. H.

Hosseinipour

S. J.

, Grooves effect on crashworthiness characteristics of thin-walled tubes under axial compression J. Mater. Des. 23 (2003): 611–617.

21.

Abdul-Latif

Baleh

Aboura

, Some improvements on the energy absorbed in axial plastic collapse of hollow cylinders Int. J. Solids Struct. 43 (2006): 1543–1560.

22.

Singace

A. A.

El-Sobky

, Behavior of axially crushed corrugated tubes Int. J. Mech. Sci. 39 3 (1997): 249–268.

23.

Reid

S. R.

Reddy

T. Y.

, Static and dynamic crushing of tapered sheet metal tubes of rectangular cross-section Int. J. Mech. Sci. 28 9 (1986): 623–637.

24.

Mamalis

A. G.

Johnson

, Quasi-static crumpling of thin walled circular cylinders and frusta under axial compression Int. J. Mech. Sci. 25 (1983): 713–732.

25.

Shakeri

Salehghaffari

Mirzaeifar

, Expansion of circular tubes by rigid tubes as impact energy absorbers: Experimental and theoretical investigation Int. J. Crashworthiness 12 (2007): 493–501.

26.

Hanssen

A. G.

Langseth

Hopperstad

O. S.

, Static and dynamic crushing of circular aluminum extrusions with aluminum foam filler Int. J. Impact Eng. 24 (2000): 475–507.

27.

Hanssen

A. G.

Langseth

Hopperstad

O. S.

, Static and dynamic crushing of square aluminium extrusions with aluminum foam filler Int. J. Impact Eng. 24 4 (1999): 347–383.

28.

Santosa

Wierzbicki

, Crash behavior of columns filled with aluminum honeycomb or foam Comput. Struct. 68 4 (1998): 343–367.

29.

Alexander

J. M.

, An approximate analysis of the collapse of thin cylindrical shells under axial loading Q. J. Mech. Appl. Math. 13 (1960): 11–16.

30.

Hallquist

J. O.

, LS-DYNA 3D: Theoretical manual (Livermore: Livermore Software Technology Corporation 1993).