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RESEARCH PRODUCT
Application of cohesive-zone models to delamination behaviour of composite material
Xiaojing GongKing Jye WongLaurent GuillaumatL. Pengsubject
Work (thermodynamics)Materials scienceComposite numberBilinear interpolation02 engineering and technology0203 mechanical engineeringmedicineElectrical and Electronic EngineeringComposite materialCivil and Structural Engineeringbusiness.industryMechanical EngineeringDelaminationMode (statistics)StiffnessStructural engineering[PHYS.MECA.MSMECA]Physics [physics]/Mechanics [physics]/Materials and structures in mechanics [physics.class-ph]021001 nanoscience & nanotechnologyGeotechnical Engineering and Engineering GeologyFinite element methodExponential function020303 mechanical engineering & transportsMechanics of Materialsmedicine.symptom0210 nano-technologybusinessdescription
International audience; The parameters of cohesive elements have to be chosen correctly in the simulation of composite delamination by finite element method: such as interface strength, interface stiffness and shape of cohesive law. The purpose of this work is to investigate their influence on the accuracy of the results obtained. A three-dimensional cohesive-zone model has been established using Ls-dyna to simulate Double-Cantilever-Beam mode I (DCB) and Edge-Notched-Flexure mode II (ENF) tests. The influence of these parameters of cohesive element on the maximum load and the slope of load-displacement curve have been discussed by comparing experimental and numerical results. Four traction-separation laws: bilinear, linear-parabolic, exponential and trapezoidal were considered associated with a large variation of the interface strength and of the initial interface stiffness.
| year | journal | country | edition | language |
|---|---|---|---|---|
| 2012-02-23 | World Journal of Engineering |