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首页> 外文期刊>Journal of Materials Engineering and Performance >Crashworthiness of a Composite Wing Section: Numerical Investigation of the Bird Strike Phenomenon by Using a Coupled Eulerian-Lagrangian Approach
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Crashworthiness of a Composite Wing Section: Numerical Investigation of the Bird Strike Phenomenon by Using a Coupled Eulerian-Lagrangian Approach

机译：复合翼段的崩溃：使用耦合的Eulerian-Lagrangian方法进行鸟类袭击现象的数值调查

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摘要

Crashworthiness is defined as the capability of a structure to guarantee its occupants safety during a crash event. In the present work, the crashworthiness of a composite wing section, subjected to a bird strike event, has been investigated. Indeed, the mechanical behavior of the impacted wing section has been inspected by means of the FE code Abaqus/Explicit. The impact phenomenon has been numerically simulated with a coupled Eulerian-Lagrangian (CEL) approach. The impacted structure has been modeled considering a Lagrangian formulation, while a Eulerian one has been used to model the bird. Moreover, Eulerian-Lagrangian contacts are used for transfer the loads arising from the impact event to the Lagrangian structure. The proposed numerical model, capable to take into account the matrix and fiber traction and compression damages, uses a 3D finite element approach to better predict the deformations and the damages onset and propagation during the impact event. The numerical results, in terms of structural deformation and damage onset and propagation, have been obtained by considering different impact locations and different impact angles.
机译：Crashworthity被定义为结构在碰撞事件期间保证其占用者的能力。在本作的工作中，已经研究过鸟类罢工事件的复合机翼部分的崩溃。实际上，通过FE代码/显式检查了受影响的翼段的机械行为。用耦合的Eulerian-Lagrangian（CEL）方法进行了数值模拟了影响现象。受影响的结构已经考虑着拉格朗日配方，而欧拉人已被用来模拟鸟类。此外，Eulerian-Lagrangian触点用于将从冲击事件引起的负荷转移到拉格朗日结构。所提出的数值模型，能够考虑矩阵和光纤牵引和压缩损坏，使用3D有限元方法来更好地预测冲击事件期间的变形和损坏和传播。通过考虑不同的冲击位置和不同的冲击角来获得在结构变形和损伤和传播方面的数值结果。

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