On the importance of finite element mesh alignment along the fibre direction for modelling damage in fibre-reinforced polymer composite laminates

Millen, S.L.J.; Ullah, Zahur; Falzon, Brian

doi:10.1016/j.compstruct.2021.114694

Cited by 10 publications

(2 citation statements)

References 50 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The second consequence of crack-band erosion would only have an effect on compressive and shear dominated cracking. Finally, the element erosion technique is a mesh-dependent solution and requires more complex procedures for automated aligned-mesh generation, in order to enforce damage localization along physically-sound crack paths, specially when matrix crack are the dominant damage mode [50]. Aligned-meshing strategies have been used by previous authors for low and high velocity impact simulations with manual or semi-automated mesh generation operations [25,27,51,52].…”

Section: Physically-sound Crack Simulation By Element Erosion Techniquesmentioning

confidence: 99%

Experimental analysis and simulation of low-velocity impact damage of composite laminates

Falcó

Lopes

Sommer

et al. 2022

Composite Structures

View full text Add to dashboard Cite

Section: Physically-sound Crack Simulation By Element Erosion Techniquesmentioning

confidence: 99%

Experimental analysis and simulation of low-velocity impact damage of composite laminates

Falcó

Lopes

Sommer

et al. 2022

Composite Structures

View full text Add to dashboard Cite

“…An alternative strategy, which has not been employed is to align the mesh based on the ply fibre directions. Fibre aligned meshes are now finding application within composite damage models [8][9][10][11][12] but have thus far been confined to mechanical analyses. This meshing strategy has not been investigated for other simulation types, such as thermal loading.…”

Section: Introductionmentioning

confidence: 99%

On the Importance of Fibre Direction Mesh Alignment for Artificial Lightning Strike Simulations

Millen,

Navagel,

Murphy

2023

9th ECCOMAS Thematic Conference on the Mechanical Response of Composites

View full text Add to dashboard Cite

Composite materials, used in primary aircraft structures, produce weight reduction and improved fuel efficiency over legacy metal airframes but are more susceptible to lightning strike damage. Therefore, research into lightning strike damage and protection systems, through experiments and simulations, is an important research topic. For any FE simulation appropriate representation of the material behaviour, the loading and boundary conditions are key to accurate predictions. In addition, an aspect which has been under reported in many studies is the meshing strategy.Fibre direction mesh alignment has been reported to yield more accurate results in the modelling of mechanical damage (intralaminar damage initiation and propagation) in unidirectional fibre reinforced composite structures. However, this model meshing strategy has not found wide application and has not been used for the modelling of thermal damage events, e.g. lightning strike direct effect simulation. Instead, authors have typically refined the mesh around the arc attachment area. This paper, for the first time, examines the influence of fibre direction mesh alignment for artificial lightning strike simulations and the prediction of thermal damage. Initially, the mesh alignment is introduced partially in the central region of the specimen. The paper uses a mature modelling approach with a transient, fully coupled, thermal-electric step in ABAQUS with a lightning test Waveform A (40 kA, 4/20 µs) applied to the specimen. Specimen boundary conditions match those typically used in experiments and a mesh convergence study is undertaken to ensure no element size influence on the results.The use of this meshing strategy has been shown to significantly improve the prediction of both moderate and severe thermal damage profiles, when compared with the standard meshes used in previous research. The predicted moderate (2659 mm 2 vs 2833 mm 2 ) and severe (1059 mm 2 vs 1061 mm 2 ) damage areas were improved to within 4% and 1% of experimental results, respectively, using this meshing strategy.

show abstract

Simple projection method: a novel algorithm for estimation of characteristic element length in finite element simulations of composites

Rezasefat,

Mostafavi Delijani,

Hogan

et al. 2024

Int J Fract

View full text Add to dashboard Cite

On the importance of finite element mesh alignment along the fibre direction for modelling damage in fibre-reinforced polymer composite laminates

Cited by 10 publications

References 50 publications

Experimental analysis and simulation of low-velocity impact damage of composite laminates

Experimental analysis and simulation of low-velocity impact damage of composite laminates

On the Importance of Fibre Direction Mesh Alignment for Artificial Lightning Strike Simulations

Simple projection method: a novel algorithm for estimation of characteristic element length in finite element simulations of composites

Contact Info

Product

Resources

About