Finite Element Analysis of Delamination Growth in Composite Materials using LS-DYNA: Formulation and Implementation of New Cohesive Elements

Elmarakbi, Ahmed

doi:10.5772/13862

Cited by 2 publications

(2 citation statements)

References 26 publications

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“…Determination of critical force is very important as consideration for design and integrity of composite structures. In simulation, it is important to accurately predict the critical force for subsequent design steps and analyses [12,13]. In this study, the FE analysis is carried out with 3 mesh variations, as shown in Table 3.…”

Section: A Effect Of Meshing Variation On Critical Forcementioning

confidence: 99%

Finite Element Simulation of Delamination in Carbon Fiber/Epoxy Laminate Using Cohesive Zone Model: Effect of Meshing Variation

Waas

Hidayat

Noerochim

2019

MSF

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Delamination or interlaminar fracture often occurs in composite laminate due to several factors such as high interlaminar stress, stress concentration, impact stress as well as imperfections in manufacturing processes. In this study, finite element (FE) simulation of mode I delamination in double cantilever beam (DCB) specimen of carbon fiber/epoxy laminate HTA/6376C is investigated using cohesive zone model (CZM). 3D geometry of DCB specimen is developed in ANSYS Mechanical software and 8-node interface elements with bi-linear formulation are employed to connect the upper and lower parts of DCB. Effect of variation of number of elements on the laminate critical force is particularly examined. The mesh variation includes coarse, fine, and finest mesh. Simulation results show that the finest mesh needs to be employed to produce an accurate assessment of laminate critical force, which is compared with the one obtained from exact solution. This study hence addresses suitable number of elements as a reference to be used for 3D simulation of delamination progress in the composite laminate, which is less explored in existing studies of delamination of composites so far.

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Section: A Effect Of Meshing Variation On Critical Forcementioning

confidence: 99%

Finite Element Simulation of Delamination in Carbon Fiber/Epoxy Laminate Using Cohesive Zone Model: Effect of Meshing Variation

Waas

Hidayat

Noerochim

2019

MSF

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“…Where, is the damaged elasticity matrix formulated mathematically based on scalar damage approach defined in Equation 7, which was proposed by previous researchers including [27][28][29][30][31][32][33] (1 )…”

Section: An Ageing Concrete Materials Modelmentioning

confidence: 99%

Experimental and modelling investigation of mechanical behaviour of ageing concrete

Mamand

Chen

Barnett

2017

Construction and Building Materials

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To be able to investigate an ageing concrete behaviour a material model is developed by this investigation in terms of tested material samples taken from the ageing concrete structure. The splitting tensile test is modified with a lateral expansion measurement rig to observe the load-displacement response in the splitting test. A set of material properties is determined based on experimental work and successfully used to create a material damage model for investigating the mechanical behaviour of the ageing concrete. A FEA model with this developed ageing concrete material model (ACMM) is used in simulation of selected concrete core sample tests including the splitting test. Comparison between tests and modelling simulations shows that the developed ageing concrete material model is working well. The outcomes from this investigation supplies an approach to widely investigate engineering materials with ageing problems.

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Finite Element Analysis of Delamination Growth in Composite Materials using LS-DYNA: Formulation and Implementation of New Cohesive Elements

Cited by 2 publications

References 26 publications

Finite Element Simulation of Delamination in Carbon Fiber/Epoxy Laminate Using Cohesive Zone Model: Effect of Meshing Variation

Finite Element Simulation of Delamination in Carbon Fiber/Epoxy Laminate Using Cohesive Zone Model: Effect of Meshing Variation

Experimental and modelling investigation of mechanical behaviour of ageing concrete

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