Modes of axial collapse of unconstrained capped frusta

Alghamdi, Ahlam; Aljawi, A. A. N.; Abu-Mansour, T.M.-N.

doi:10.1016/s0020-7403(02)00018-8

Cited by 52 publications

(10 citation statements)

References 14 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…Such studies showed that the crush load-deflection response of the frusta was, in general, more stable than that of straight cylinders. Recent studies on such absorbers have focused on different axial deformation modes [9][10][11], the effect of end constraints on the collapse mode as well as energy absorption under axial impact loading [12], and the use of composite materials [13,14].…”

Section: Introductionmentioning

confidence: 99%

Parametric study and numerical analysis of empty and foam-filled thin-walled tubes under static and dynamic loadings

Mirfendereski

Salimi

Ziaei-Rad

2008

International Journal of Mechanical Sciences

144

View full text Add to dashboard Cite

Section: Introductionmentioning

confidence: 99%

Parametric study and numerical analysis of empty and foam-filled thin-walled tubes under static and dynamic loadings

Mirfendereski

Salimi

Ziaei-Rad

2008

International Journal of Mechanical Sciences

144

View full text Add to dashboard Cite

“…Structural efficiency enhancement leads the researchers to study different material and geometrical aspects of thin wall structures. Several types of energy absorbing components like circular tubes Karagiozova et al, 2000), square tubes (Langseth et al, 1996;1999), frusta Alghamdi et al, 2002;Hosseini et al, 2006), conical (Hui and Xiong, 2016), stepped tubes with external stiffeners (Zahran et al, 2016a) and multi-corner columns (Abramowicz and Weirzbicki, 1989)have been studied for their behavior under impact and crush loading. Circular tubes have been a consistent choice for energy absorption applications because of high strength and stiffness with low cost and ease of manufacturing.…”

Section: Introductionmentioning

confidence: 99%

Investigation of the Energy Absorption Characteristics of Metallic Tubes with Curvy Stiffeners under Dynamic Axial Crushing

Ahmed

Xue

Kamran

et al. 2017

Lat. Am. j. solids struct.

View full text Add to dashboard Cite

Thin walled multi-cell columns are highly efficient energy absorbers under axial compressions. Multi-cell features are usually obtained by placing stiffeners or ribs to get the required geometry features in the columns. In this study, the curved stiffeners with varying numbers in different configurations are used to support the circular single and bi-tubular metallic tubes and their shape, position and number effects are numerically investigated under dynamic axial crushing loads. Number of configurations can be classified by the number of tube/tubes and curved stiffened shells. This study can be divided in three parts; single tubes with cross-curved stiffeners with equal number of cells, single tubes with curved stiffened wall supports with ascending number of stiffeners, and bi-tubular tubes with ascending cross-curved stiffeners. The mass in each configuration is maintained as same by adjusting the thicknesses of the stiffeners. Energy absorption for all of the configurations are compared with published experimental literature of standard single tube and single tube with crossstraight stiffeners. Deformation modes and energy absorption characteristics are evaluated and discussed for all of the proposed configurations. Results indicate that the proposed configurations with curvy stiffeners are superior in energy absorption with increased mean crushing force and enhanced energy absorption along with a high value of crush force efficiency in comparison with the refernce configurations. Bi-tubular configurations with curvy stiffeners show a more stabalized response with the lowest peak crushing force in all of the proposed configurations.

show abstract

“…However, in the light of efficient fuel economics, aluminium as a lightweight material is gaining popularity [2]. In terms of the works reported on aluminium as an efficient energy absorber, most of them can be categorized as the following investigations; (a) effect of cross-sectional geometry [3][4][5][6][7], (b) effect of trigger mechanisms [8][9][10][11][12], (c) effect of boundary conditions [13][14][15][16], (d) effects due to innovative designs [6,[16][17][18][19][20][21][22][23] , (e) effect of failure mechanism and (f) effect of fillers such as foams [24][25][26][27]. For the crosssectional geometries, a buckling initiator using inertia force for a hat-shaped cross-section improved the energy absorption for aluminium tubes [3].…”

Section: Introductionmentioning

confidence: 99%

Energy absorption capability of thin-walled aluminium tubes under crash loading

Khalili¹,

Tarlochan

Al-Khalifa³

2015

J. Mech. Eng. Sci.

View full text Add to dashboard Cite

This paper investigates the interaction of design factors such as tube thickness, tube length, and tube cross-sectional aspect ratio, along with friction and impacting mass on crashworthiness parameters such as specific energy absorption contact time, peak force and crush distance. The impact velocity is assumed to be constant at 15 m/s. The focus is on rectangular aluminium tubes and the analysis was carried out by using a validated finite element model. The analysis shows that the factors are not independent of each other and there is some degree of interaction between them. It was found that the trigger mechanism is a very important design factor to be included in the design of thin-walled tubes for energy absorption applications. The effect of the friction coefficient was found to be insignificant and finally, based on the interactions, it can be concluded that the most effective design would be a larger tube with small wall thickness, and a larger aspect ratio to avoid buckling.

show abstract

Modes of axial collapse of unconstrained capped frusta

Cited by 52 publications

References 14 publications

Parametric study and numerical analysis of empty and foam-filled thin-walled tubes under static and dynamic loadings

Parametric study and numerical analysis of empty and foam-filled thin-walled tubes under static and dynamic loadings

Investigation of the Energy Absorption Characteristics of Metallic Tubes with Curvy Stiffeners under Dynamic Axial Crushing

Energy absorption capability of thin-walled aluminium tubes under crash loading

Contact Info

Product

Resources

About