Three-dimensional woven carbon fibre polymer composite beams and plates under ballistic impact

Turner, Paul C.; Liu, Tao; Zeng, Xuesen; Brown, Kevin

doi:10.1016/j.compstruct.2017.10.091

Cited by 48 publications

(20 citation statements)

References 15 publications

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“…With this in mind, the impact performances of composites, such as the conventional nontoughened and toughened thermosetting epoxy-matrix composites [7][8][9][10][11], thermoplasticmatrix composites [12][13][14], and three-dimensional woven-fabric fibre composites [15][16][17], have been studied. In industrial applications, the carbon-fibre reinforced-epoxy (CF/epoxy) composites have been extensively employed in civil aircraft, due to their relatively high performance and the relative ease of manufacturing large and complex structures from this type of composite material [18,19].…”

Section: Introductionmentioning

confidence: 99%

The Impact Performance of Woven-Fabric Thermoplastic and Thermoset Composites Subjected to High-Velocity Soft- and Hard-Impact Loading

Liu

Kaboglu

et al. 2019

Appl Compos Mater

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The present paper investigates the impact performance of woven-fabric carbon-fibre composites based upon both thermoplastic-and thermoset-matrix polymers under highvelocity impact loading by conducting gas-gun experiments at impact velocities of up to 100 m.s −1. The carbon-fibre reinforced-polymers (CFRPs) are impacted using soft-(i.e. gelatine) and hard-(i.e. aluminium-alloy) projectiles to simulate either a soft bird-strike or a hard foreign-body impact (e.g. runway debris), respectively, on typical composites employed in civil aircraft. The out-of-plane displacements of the impacted composite specimen are obtained by means of a three-dimensional Digital Image Correlation (DIC) system for the soft-projectile impact on the composites and the extent of damage is assessed both visually and by using portable C-scan equipment. The perforation resistance and energy absorbing capability of the composites are also studied by performing high-velocity impact experiments using the hard-projectile and the resulting extent and type of damage are identified. In addition, a Finite Element (FE) model is also developed to investigate the interaction between the projectile and the composite target.

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Section: Introductionmentioning

confidence: 99%

The Impact Performance of Woven-Fabric Thermoplastic and Thermoset Composites Subjected to High-Velocity Soft- and Hard-Impact Loading

Liu

Kaboglu

et al. 2019

Appl Compos Mater

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“…Anisotropy governs 5 the fracture response of both natural and manufactured materials as in the case of granitic rocks [3], biological tissues [4], single crystals [5], and composite sheets [6]. Furthermore, the response of such materials under impact loading is being receiving considerable attention as it pertains to numerous industrial applications particularly within the automotive and aerospace sector, see, e.g., [7]. 10 Numerical simulation of fracture propagation under such conditions can provide valuable insight into the underlying mechanical processes while also providing a framework for optimum design of materials considering their post-fracture response under impact loading.…”

Section: Introductionmentioning

confidence: 99%

“…Ψ f = 311.82 − 94.29 = 217.53 mJ.This is in very good agreement with the analytical prediction as A f ·G c (θ) = 565 10 · 2 · 10.6066 = 212.13 mJ, where A f stands for the fracture surface. The slight increase of the total fracture energy from point (6) to(7) corresponds to the marginal degradation of the beam material during the free vibration regime of its response.5.3.2. Case (ii): Isotropy -G c (θ) = 9.75 N/mm 570 Even though the variation in G c is small compared to case (i), it results in a significantly different material response.…”

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confidence: 98%

Phase-Field Material Point Method for dynamic brittle fracture with isotropic and anisotropic surface energy

Kakouris

Triantafyllou

2019

Computer Methods in Applied Mechanics and Engineering

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A novel phase field material point method is introduced for robust simulation of dynamic fracture in elastic media considering the most general case of anisotropic surface energy. Anisotropy is explicitly introduced through a properly defined crack density functional. The particular case of impact driven fracture is treated by employing a discrete field approach within the material point method setting. In this, the equations of motion and phase field governing equations are solved independently for each discrete field using a predictor-corrector algorithm. Contact at the interface is resolved through frictional contact conditions. The proposed method is verified using analytical predictions. The influence of surface energy anisotropy and loading conditions on the resulting crack paths is assessed through a set of benchmark problems. Comparisons are made with the standard Phase Field Finite Element Method and experimental observations. 65 3 (PF-MPM) has been successfully introduced by the authors in [44] for quasistatic brittle fracture problems while a variant accounting for anisotropy in the quasi-static regime has been developed in [45].Moving beyond the state-of-the-art, we present a phase field MPM method for the solution of dynamic fracture considering materials with anisotropic frac-70 ture energy; isotropy emerges as a special case of the proposed formulation.Following, the method is extended to also account for frictional contact fracture problems. We use as point of departure the MPM contact algorithm introduced in Bardenhagen et al. [46] where multiple fields, termed discrete fields, are introduced in the non-deforming Eulerian mesh so that each contact body 75 corresponds to a different field. We define the variational structure of our phase field implementation of impact driven fracture at each discrete field from which the coupled weak form of the contact problem naturally emerges. Finally, we develop a predictor corrector solution algorithm for the solution of the governing equations over time. 80This paper is organized as follows. In section 2 phase-field modelling is briefly described in both isotropic and anisotropic brittle fracture. The discrete field formulation for phase field fracture due to impact is presented in section 3. The Material Point Method implementation for frictional contact fracture is presented in section 4. Finally, in section 5, a set of benchmark problems are 85 examined to demonstrate the accuracy and robustness of the proposed method. Preliminaries Phase field modellingIn the following, the case of an arbitrary deformable domain Ω is considered, with an external boundary ∂Ω and a crack path Γ as shown in Fig. (1a). 90The deformable domain Ω with domain volume V , is subjected to body forces b = b 1 b 2 b 3 T . Furthermore, a set of traction/pressure loadst is applied on the boundary ∂Ωt ⊆ ∂Ω. A prescribed displacement field, denoted asū, is imposed on the boundary ∂Ωū ⊆ ∂Ω.

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“…The explicit matrix consideration in the simulation allows reducing the number of parameters in the model that require identification since it is possible to use simple material deformation models (linear elastic or elastic-plastic). The yarnlevel approach or its combinations with ply-level one [36][37][38][39][40][41] is more often used to simulate 3D-reinforced composites under impact loading.…”

Section: Meso-scale (Ply/yarn Level)mentioning

confidence: 99%

Creation and verification of computational models for analysis of the mechanical behaviour of jet engines composite components under high-velocity impact: main problems and basic recommendations

Kudryavtsev

Zhikharev

Olivenko

2019

PNRPU Mechanics Bulletin

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Currently, modern CAE programs like ANSYS, LS-DYNA, ABAQUS, Simcenter 3D etc. are widely used to develop each engineering product. CAE reduces development costs and speeds up product launches. Computer modelling allows eliminating unsuccessful design options at early design stages and minimising or eliminating critical design changes at the prototype testing stage. Computer simulations are especially needed for the development of high-performance perfection designs like jet engines. The use of composites in the engines requires the availability of appropriate design tools to assess the mechanical behaviour of structural elements made of such materials under operational loads and in an emergency. Predictive modelling of the deformation and fracture of the composite fan blades and fan case subjected to dynamic loading cause considerable interest of engineers. As in the case of simulation of shock loading of metals, a model of a composite material must be verified. However, the problem is that the fibrous composite material itself is already a structure and can be modelled in various ways: without considering the layered structure (homogeneous approach) taking the mesostructure into account (at the ply-level or at the yarn-level) taking the microstructure into account (at the filament level). The requirements for the initial data, the number of parameters determined during the verification process, the complexity of creating geometric models will differ in each case. This paper briefly describes the main approaches to the numerical simulation of composite elements under highvelocity impact loading. The main advantages and disadvantages of these approaches are also considered. On the example of the meso-scale approach, the main parameters of the computational models that affect the results of calculations are shown. Based on the obtained data, the main recommendations were formulated on the validation of meso-scale models of composites.

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Three-dimensional woven carbon fibre polymer composite beams and plates under ballistic impact

Cited by 48 publications

References 15 publications

The Impact Performance of Woven-Fabric Thermoplastic and Thermoset Composites Subjected to High-Velocity Soft- and Hard-Impact Loading

The Impact Performance of Woven-Fabric Thermoplastic and Thermoset Composites Subjected to High-Velocity Soft- and Hard-Impact Loading

Phase-Field Material Point Method for dynamic brittle fracture with isotropic and anisotropic surface energy

Creation and verification of computational models for analysis of the mechanical behaviour of jet engines composite components under high-velocity impact: main problems and basic recommendations

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