无人机撞击民机发动机叶片动态响应及破坏损伤数值研究

采取ABAQUS软件作为系统框架，该软件为非线性动力软件，结合拉格朗日算法作为基础，公共搭建一套应用于无人机装机民机中核心零件的数值模型。其中核心部件中包括了针对无人机被民机发动机吸入到风扇叶片发生撞击的仿真模型，采用不同场景下的工况进行仿真分析与计算，以此获取撞击过程中的动力响应规律以及导致民机动力失效损伤的经过。仿真模拟结果表明:在民机的发动机风扇叶片被无人机撞击以后，风扇转速的变化是无人机对发动机撞击部位带来损伤差异的关键因素；无人机撞击民机造成关键部件损伤的主要来源是无人机内嵌的硬质体锂电池和小电机。

Numerical Study on Dynamic Response and Damage of Unmanned Aerial Vehicle Impacting Engine Fan Blades of Civil Aircraft

In the framework of nonlinear dynamic software ABAQUS, the classic Lagrange method is used to establish a numerical model of unmanned aerial vehicle impacting the engine’s key components of the civil aircraft, including the simulation of unmanned aerial vehicle impacting engine fan blades of the civil aircraft. The impact dynamic response law and the failure damage changing process are obtained under different operating conditions. The following conclusions are submitted by simulating: In the situation of unmanned aerial vehicle impacting the engine fan blades, the rotation speed of blades and the impact position are the main factors causing the difference of deformation damage. The major damage on the key components of civil aircraft engines was mainly caused by hard-cell lithium batteries and small motors embedded in unmanned aerial vehicle.