Effect of bird geometry and impact orientation in bird striking on a rotary jet-engine fan analysis using SPH method

Zhang, Dahai; Fei, Qingguo

doi:10.1016/j.ast.2016.05.003

Cited by 54 publications

(38 citation statements)

References 20 publications

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“…Among these methods, SPH can better describe bird fragmentation into discrete particles with high efficiency. Therefore, SPH has recently experienced high popularity [2,5,10,15,16,32,33,40,41] in bird strike, high-velocity impact, and other large deformation studies. In the present study, a SPH method was employed, represented by a set of discrete but interacting particles, which belong to a meshless particle-based method.…”

Section: Sph-fem Computational Modelmentioning

confidence: 99%

“…Generally, bird strike is a short duration (generally in the millisecond range) and high-intensity loading event, with complex coupling interactions. Under the bird soft-body impacts, some critical parameters, e.g., geometry effects of birds [4][5][6][7], material's models of birds [8][9][10], initial velocities and impact angles of the bird projectile [10][11][12][13], etc., can influence the deformations and damage mechanisms of the front-facing structures.…”

Section: Introductionmentioning

confidence: 99%

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SPH-FEM Design of Laminated Plies under Bird-Strike Impact

2019

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Composite laminates can potentially reduce the weight of aircrafts; however, they are subjected to bird strike hazards in civil aviation. To handle their nonlinear dynamic behaviour, in this study, the impact damage of composite laminates were numerically evaluated and designed by means of smoothed particle hydrodynamics (SPH) and the finite element method (FEM) to simulate the interaction between bird projectiles and the laminates. Attention was mainly focused on the different damage modes in various laminates’ plies induced by bird impact on a square laminated plate. A continuum damage mechanics approach was exploited to simulate damage initiation and evolution in composite laminates. Damage maps were computed with respect to different ply angles, i.e., 0°, 45° and −45°. The damage distributions were comparatively investigated, and then the ply design was considered for crashworthiness improvement. The results aim to serve as a design guideline for future prototype-scale bird strike studies of complex laminated structures.

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Section: Sph-fem Computational Modelmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

SPH-FEM Design of Laminated Plies under Bird-Strike Impact

2019

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“…Bird-strike impacts are the major cause of blade damage for aircraft engines [1]. Therefore, the bird-induced failure of both fan blades [2][3][4][5] and leading edges [6][7][8][9][10][11] have caused much research interest. The latest bird-strike example was an Airbus A321 of Russian Ural Airlines on 15 August 2019, which was struck by birds during take-off, and subsequently its dual engines failed.…”

Section: Introductionmentioning

confidence: 99%

Bird-Strike Resistance of Composite Laminates with Different Materials

2019

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To obtain some basic laws for bird-strike resistance of composite materials in aeronautical application, the high-velocity impact behaviors of composite laminates with different materials were studied by numerical methods. The smoothed particle hydrodynamics (SPH) and finite element method (FEM) coupling models were validated from various perspectives, and the numerical results were comparatively investigated. Results show that the different composite materials have relatively little effect on projectile deformations during the bird impact. However, the impact-damage distributions can be significantly different for different composite materials. The strength parameters and fracture energy parameters play different roles in different damage modes. Lastly, modal frequency was tentatively used to explain the damage behavior of the composite laminates, for it can manifest the mass and stiffness characteristics of a dynamic structure. The dynamic properties and strength properties jointly determine the impact-damage resistance of composite laminates under bird strike. Future optimization study can be considered from these two aspects.

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“…Usually, full-scale engine bird ingestion tests, which are extremely expensive, are required by safety regulations to demonstrate their ability to withstand bird ingestion and following the ingestion to produce enough trust. In order to decrease the cost of engine development, a series of simulated testing method in laboratory scale and analysis methods applicable to bird strike simulation were developed [7][8][9]. It has now been extensively accepted that bird under highvelocity impacts could be modelled as a fluid because bird's tissue strength is significantly lower than the stresses generated during the impact event [10].…”

Section: Introductionmentioning

confidence: 99%

Dynamic Behavior and Damage Mechanism of 3D Braided Composite Fan Blade under Bird Impact

Liu

Luo

Chen

et al. 2018

International Journal of Aerospace Engineering

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The three-dimensional braided composites, with intertwined fiber bundles in the through-thickness direction, have advantages of high interlaminar shear strength, fracture toughness, and excellent impact resistance, making them a promising material for applications in the field of aeroengine fan blades. As the bird impact behavior of the fan blade directly affects the safety of the aeroengines, it is of great significance to study the dynamic response and damage mechanism of 3D braided composites under bird strike load. In this paper, the bird impact tests on the 3D four-step braided composite targets were carried out using the gas gun system. The effects of impact velocity, impact location, and braiding angle on the bird impact behavior were studied. It is concluded that the damage and failure become more severe with the increasing impact velocity. The whole impact event could be divided into 3 stages, i.e., local deformation stage, postflow impact stage, and bending deflection stage. The braided composite presents flexible characteristics and could bear extraordinary deformation during the bird impact. One distinguishing feature of bird impact damage is the destruction of the clamping root due to bending load caused by cantilever construction. The internal damage form at the impact area was mainly the separation of the fiber bundles from the matrix while the breakage of the fiber bundles and the crushing of the matrix play the primary role at the root part. The target plate impacted at the 70% height had the largest bending angle and most serious damage, followed by those impacted at the 90% and 50% heights. Both the appearance damage and internal damage extent are smallest for 45° braiding composites.

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Effect of bird geometry and impact orientation in bird striking on a rotary jet-engine fan analysis using SPH method

Cited by 54 publications

References 20 publications

SPH-FEM Design of Laminated Plies under Bird-Strike Impact

SPH-FEM Design of Laminated Plies under Bird-Strike Impact

Bird-Strike Resistance of Composite Laminates with Different Materials

Dynamic Behavior and Damage Mechanism of 3D Braided Composite Fan Blade under Bird Impact

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