An experimental and numerical crashworthiness investigation of thermoplastic composite crash boxes

Zarei, Hamid Reza; Kröger, Matthias; Albertsen, H.

doi:10.1016/j.compstruct.2007.10.028

Cited by 95 publications

(41 citation statements)

References 28 publications

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“…They reported that the introduction of corrugation significantly enhanced the energy absorption capability of composite tubes. Zarei et al [25] studied the energy absorption characteristics of a hexagonal box with vertical ribs. These test specimens were manufactured from woven fiberglass/polyamide plates using thermoforming welding method.…”

Section: Introductionmentioning

confidence: 99%

Crushing and energy absorption performance of different geometrical shapes of small-scale glass/polyester composite tubes under quasi-static loading conditions

Palanivelu¹,

Paepegem²,

Degrieck³

et al. 2011

Composite Structures

109

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This paper presents the quasi-static crushing performance of nine different geometrical shapes of small-scale composite tubes. The idea is to understand the effect of geometry, dimension and triggering mechanism on the progressive deformation of small-scale composite tubes. Different geometrical shapes of the composite tubes have been manufactured by hand lay-up technique using uni-directional E-glass fabric (with single and double plies) and polyester resin. Dedicated quasi-static tests (144 tests) have been conducted for all nine geometrical shapes with different t/D (thickness to diameter) ratios and two triggering profiles (45 ⁰ chamfering and tulip pattern with an included angle of 90 ⁰ ). From this unique study, it was found that the crushing characteristics and the corresponding energy absorption of the special geometrical shapes are better than the standard geometrical shapes such as square and hexagonal cross sections. Furthermore, the tulip triggering attributed to a lower peak crush load followed by a steady mean crush load compared to the 45 ⁰ chamfering triggering profile which resulted into a higher energy absorption in most of the geometrical shapes of the composite tubes.

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Section: Introductionmentioning

confidence: 99%

Crushing and energy absorption performance of different geometrical shapes of small-scale glass/polyester composite tubes under quasi-static loading conditions

Palanivelu¹,

Paepegem²,

Degrieck³

et al. 2011

Composite Structures

109

View full text Add to dashboard Cite

show abstract

“…Furthermore, they concluded that the closed form of the horizontal hourglass section gave a higher specific energy than square tubes with the same material and loading conditions. Recently Zarei et al [19] studied the energy absorption characteristics of a hexagonal box with vertical ribs. These test specimens were manufactured from woven fiberglass/polyamide plates using thermoforming welding method.…”

Section: Introductionmentioning

confidence: 99%

Comparative study of the quasi-static energy absorption of small-scale composite tubes with different geometrical shapes for use in sacrificial cladding structures

et al. 2010

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This paper focuses on the quasi-static crushing characteristics and the corresponding energy absorption of nine different shapes of small-scale composite tubes. The idea is to choose suitable cross sections and geometrical shapes of the composite tubes which can yield progressive deformation and higher energy absorption; the finalized geometrical shapes will be studied further for the inner core of a sacrificial cladding structure against blast loading. All the composite tubes have been manufactured by a hand lay-up technique using E-glass fabric and polyester resin. Quasi-static axial crushing tests have been conducted to understand the deformation patterns and the corresponding load-deformation characteristics of each composite tube. The effect of dimensions (thickness to diameter ratio) on the specific energy absorption of each composite tube was studied. Finally, the quasi-static test parameters such as the peak crush load, mean crush load and the specific energy absorption of all these composite tubes were compared. From this unique study, it was found that the specific energy absorption of special geometrical shapes (hourglass type -A, hourglass type -B, conical circular type -X and conical circular type -Y) of the composite tubes is significantly higher than the standard and uniform profiles such as the square and the hexagonal cross sections.

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“…Hence, it was decided to continue with the shell elements. Normally the triggering type 1 is modelled with shell elements with gradually reduced thickness [10,21] as shown in Figure 3 geometry of the composite tube; rather it would yield a double chamfering triggering geometry. To study the effect of triggering modelling, in addition to the Model A, one more possible modelling (Model B) was adopted where the shell elements are located as shown in Figure 3(b).…”

Section: Modellingmentioning

confidence: 99%

“…However, there have been several studies proving that the well established and existing models available in commercial *Corresponding author: Sivakumar Palanivelu, Tel: +32-(0)9-264.33.15, Fax: +32-(0)9-264.35.87 Email: Sivakumar.Palanivelu@UGent.be finite element codes can be adopted to predict the energy absorption behaviour of a composite tube. Han et al [10] and Zarei et al [21] used Material model 54 of LS-DYNA to predict the failure patterns and the energy absorption of the circular and square crosssectional tubes respectively. Material model 54 [22] has the option of using either the TsaiWu failure or the Chang-Chang failure criteria for the individual lamina.…”

Section: Introductionmentioning

confidence: 99%

Parametric study of crushing parameters and failure patterns of pultruded composite tubes using cohesive elements and seam, Part I: Central delamination and triggering modelling

et al. 2010

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Typically, most of the brittle composite tubes exhibit circumferential delamination, lamina bending, axial cracking and brittle fracturing when subjected to static and dynamic loading conditions. In this work, a new innovative approach was adopted to model the above said failure modes using cohesive elements under an axial impact loading case. The circular and square cross sectional pultruded profiles made of glass-polyester were considered for the study. A numerical parametric study has been conducted to study the effect of the delamination on the failure patterns and the corresponding energy absorption using a single layer and two layers of shell elements. To predict the peak crushing load and the energy absorption, the importance of the adequate numerical modelling of triggering is discussed. All numerical simulations were carried out using the commercially available finite element code ABAQUS V6.7-3 Explicit. Finally, the results of this comprehensive numerical investigation are compared with previously published experimental results [1]. Part II of this paper deals with the influence of multiple delaminations and modelling of axial cracks on the deformation patterns and the effect of initial geometric imperfections on the energy absorption.

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An experimental and numerical crashworthiness investigation of thermoplastic composite crash boxes

Cited by 95 publications

References 28 publications

Crushing and energy absorption performance of different geometrical shapes of small-scale glass/polyester composite tubes under quasi-static loading conditions

Crushing and energy absorption performance of different geometrical shapes of small-scale glass/polyester composite tubes under quasi-static loading conditions

Comparative study of the quasi-static energy absorption of small-scale composite tubes with different geometrical shapes for use in sacrificial cladding structures

Parametric study of crushing parameters and failure patterns of pultruded composite tubes using cohesive elements and seam, Part I: Central delamination and triggering modelling

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