Experimental testing and phenomenological modelling of the fragmentation process of braided carbon/epoxy composite tubes under axial and oblique impact

Greve, Lars; Pickett, A.K.; Payen, F.

doi:10.1016/j.compositesb.2008.02.002

Cited by 49 publications

(19 citation statements)

References 12 publications

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“…Fleming and Vizzini [31] conducted similar experiments on carbon/epoxy tubes and observed an increase in SEA of 5.3% at 5 • oblique impact angle and toppling deformation at angles above 5 • . Similar results were reported by Greve, Pickett and Payen [49] who tested braided carbon tubes at an oblique angle of 15 • and observed an unstable collapse of the tubes. The increase at smaller oblique angles is likely due to the increase in contact area and the resulting additional frictional energy dissipation.…”

Section: Test Directionsupporting

confidence: 79%

Automotive Composite Structures for Crashworthiness

Lukaszewicz

2013

Advanced Composite Materials for Automotive Applications

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Section: Test Directionsupporting

confidence: 79%

Automotive Composite Structures for Crashworthiness

Lukaszewicz

2013

Advanced Composite Materials for Automotive Applications

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“…Greve et al [17] on the other hand has introduced new simulation technique of phenomenological modeling based on Energy Absorbing Contact (EAC) formulation that depends on the global fragmentation stresses obtained from a series of dynamic axial and oblique impact tests. However, this fragmentation stress depends on the laminate lay-up, geometry (thickness) and impact angle.…”

Section: Introductionmentioning

confidence: 99%

Experimental investigation on mean crushing stress characterization of carbon–epoxy plies under compressive crushing mode

Israr

Rivallant

Barrau

2013

Composite Structures

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a b s t r a c tA challenge in numerical simulation of crashworthiness study is to be able to predict the crush damage modes, their evolution during crushing and the energy absorption in any composite structure from elementary material characterisation data. Therefore, it is important to know the behavior of one ply subjected to crushing load, and especially to determine the mean crushing stress that could be used for simulation. For that purpose, quasi-static crushing tests are performed for different configurations of two CFRP materials, UD and fabrics to determine the mean crushing stress of plies alone and inside a laminate. This study shows there is a linear relationship between crushing load and the contact surface of the plies being crushed on a metallic base which enables actually to define a mean crushing stress for a ply. The method to calculate this value is presented in this paper, based on image analysis of specific crushing tests. Experimental results show that for the UD material, the mean crushing stresses in 0°and 90°plies are very close. The value for a balanced fabric is also similar, approximately 270 MPa.⇑ Corresponding author. Address: ISAE/DMSM,

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“…Such oblique loading condition could make energy-absorbing device deform in both axial progressive folding and lateral bending. Compared with the progressive folding mode, the lateral bending can be unstable with much less crash energy absorbed [17][18][19][20][21][22][23][24]. In this regard, Zhang et al [25] optimized the hollow and foam-filled conical thin-walled tubes under oblique impacting loads, and they identified that the hollow tube could have better crashing performance than the foam-filled tube under relatively high impacting velocity and great loading angle.…”

Section: Introductionmentioning

confidence: 95%