Purpose

The purpose of this paper is to use numerical methods early in the airframe design process and access the structural performance of wing leading edge devices made of different materials and design details, under bird strike events.

Design/methodology/approach

Explicit finite element analysis was used to numerically model bird strike events.

Findings

Structural performance charts related to materials and general design details were drawn to explore the design space dictated by the current applicable airworthiness requirements.

Practical implications

This paper makes use of the current capability in the numerical tools available for structural simulations and exposes the existing limitations in the terms of material modelling, material properties and fracture simulation using continuum damage mechanics. Such results will always be in the need of fine-tuning with experimental testing, yet the tools can shed some light very early in the design process in a relative inexpensive manner, especially for design details down selection like materials to use, structural thicknesses and even design arrangements.

Originality/value

Bird strike simulations have been successfully used on aircraft design, mainly at the manufactured articles design validation, testing and certification. This paper presents a hypothetical early design case study of leading edge devices for appropriate material and skin thickness down selection.

中文翻译：

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初步设计机身的鸟击虚拟测试

目的

本文的目的是在机体设计过程中尽早使用数值方法，并在发生鸟击事件时了解由不同材料和设计细节制成的机翼前缘装置的结构性能。

设计/方法/方法

显式有限元分析用于数值模拟鸟类罢工事件。

发现

绘制了与材料和一般设计细节有关的结构性能图，以探索当前适用的适航要求所规定的设计空间。

实际影响

本文利用了可用于结构模拟的数值工具中的当前功能，并揭示了在材料建模，材料特性和使用连续损伤力学进行断裂模拟方面的现有限制。这样的结果将始终需要通过实验测试进行微调，但是工具可以在设计过程的早期就以相对便宜的方式阐明一些信息，尤其是对于设计细节的向下选择，例如使用的材料，结构厚度甚至设计安排。

创意/价值

鸟击模拟已成功地用于飞机设计，主要用于制造品的设计验证，测试和认证。本文提出了一种假设的早期设计案例研究，该案例旨在针对适当的材料和蒙皮厚度向下选择进行前沿设备的设计。