Evaluation of crashworthiness of a carbon-fibre-reinforced polymer (CFRP) ladder frame in a body-on-frame vehicle

Park, Chung-Kyu; Kan, Cing-Dao; Hollowell, William T.

doi:10.1080/13588265.2013.830940

Cited by 22 publications

(10 citation statements)

References 17 publications

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“…Therefore, with the normal of the potential cracking plane (1, P , ∅ P ) , its effective fracture strength (critical strength) and energy dissipation are: c = √(cos ∅ P cos P c 1 ) 2 + (cos ∅ P sin P c 2 ) 2 + (sin ∅ P c 3 ) 2 Eq. 19 c = √(cos ∅ P cos P c 1 ) 2 + (cos ∅ P sin P c 2 ) 2 + (sin ∅ P c 3 ) 2 Eq. 20…”

Section: Anisotropic Cohesive Law Initiation Criterionmentioning

confidence: 99%

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Quasi-static crush modelling of carbon/epoxy composites with discontinuous Galerkin/anisotropic extrinsic cohesive law method

Liu

Hemelrijck

et al. 2019

Composite Structures

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Carbon/epoxy composites demonstrate significant promising improvements of weight to performance in the automotive industry. However, the design of carbon/epoxy composite components for crashworthiness remains challenging and normally requires laborious and repeated experimental work. This study adopts a predictive crush model of carbon/epoxy composites, which can partially replace the experimental work. The discontinuous Galerkin (DG) method with extrinsic cohesive laws is employed to simulate the failure patterns in the composite structures. The application of DG distinguishes the fracture model from the conventional approach where preset cohesive elements are used on the location where cracks are expected. The mixed mode cohesive laws are used to simulate the delamination between each layer. To capture different crack propagations in different layups, the anisotropic cohesive law is used to simulate the intralaminar crack propagation in composites. To verify the adopted model, circular composite tube specimens with different layups have been simulated and compared with tests under quasi-static crush loadings. The comparisons of numerical results with experimental data show that the DG crush model can reproduce the experimental results with relatively high accuracy.

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Section: Anisotropic Cohesive Law Initiation Criterionmentioning

confidence: 99%

“…where, ∆ n * = ̅ • ̅ and ∆ τ * = √‖̅‖ 2 − (∆ n * ) 2 . Finally based on this TSL, the surface traction can be evaluated as a function of the effective cohesive traction by:…”

Section: Fig4 Linear Extrinsic Cohesive Law For the Intralaminar Framentioning

confidence: 99%

Quasi-static crush modelling of carbon/epoxy composites with discontinuous Galerkin/anisotropic extrinsic cohesive law method

Liu

Hemelrijck

et al. 2019

Composite Structures

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“…As it is stated by Parka et al [5], a ladder type frame is a key structural part of a vehicle, because it absorbs the striking energy. The mass of the frame forms about 10 % of the total mass of the vehicle.…”

Section: Introductionmentioning

confidence: 99%

The analysis of deformations of the frame in a basic minibus and a low floor minibus

Surblys

Pravilonis²,

Sokolovskij

2017

mech

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“…So, this high-quality pultruded fiberglass tube can be used in bus safety construction. The weight of such a construction should, in theory, be reduced by about 20% compared to classical structural design solutions (Liu et al 2013;Park et al 2014;Jeon et al 2013).…”

Section: Introductionmentioning

confidence: 99%

Analysis of Composite Material Properties and Their Possibilities to Use Them in Bus Frame Construction

Pravilonis

Sokolovskij

2020

Transport

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Energy consumption and the emission of harmful particles have increased significantly in recent decades. The constant development of transport poses an increasing threat to the environment. The search for alternative energy-saving solutions is closely linked to the development and improvement of new vehicles, reducing their negative impact on the environment. Fiberglass or carbon fiber are among the most promising materials that can reduce weight in all types of vehicles. They are also much easier to recycle than steel. Fiberglass or carbon fiber composite materials are widely used in a variety of applications: construction, ships, and trains. Vehicles and buses are no exception. These innovative materials are used not only for interior elements but also in constructional units for the production of light duty vehicles. Meanwhile in buses these material are not yet used in safety frame. Bus safety frames are made out of steel. Therefore, in this work the fiberglass composite material from which the tubes are made by pultrusion process would replace the steel tube in the safety frame construction of the bus. Such technology could reduce the weight of the bus safety frame by about 20%. Other parameters would also be affected by weight reduction: safety: bus would be less overloaded, the braking distance would be reduced, the center of gravity position would be closer to the ground; environmental: lower air pollution due to lower CO2 emissions; economic: lower fuel consumption. However, before using such technology, it is necessary to determine the properties of the composite material. Properties were determined by tensile and shear tests (ISO 527-2:2012 and ASTM D5379/D5379M-19). Comparison tests of different materials (tensile and crushing tests) were also performed. According to the experimental results, conclusions were drawn regarding the possibility of using fiberglass for the bus frame.

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Evaluation of crashworthiness of a carbon-fibre-reinforced polymer (CFRP) ladder frame in a body-on-frame vehicle

Cited by 22 publications

References 17 publications

Quasi-static crush modelling of carbon/epoxy composites with discontinuous Galerkin/anisotropic extrinsic cohesive law method

Quasi-static crush modelling of carbon/epoxy composites with discontinuous Galerkin/anisotropic extrinsic cohesive law method

The analysis of deformations of the frame in a basic minibus and a low floor minibus

Analysis of Composite Material Properties and Their Possibilities to Use Them in Bus Frame Construction

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