Purpose

This paper aims to investigate the fatigue life and dynamic loads of an arresting cable when a landing aircraft passes through a runway.

Design/methodology/approach

The cable is assumed to be under tension and with bending rigidity. The normal modes and natural frequencies of the vibrating wire are obtained analytically. The response of the arresting cable owing to the impact of the landing aircraft is modelled as a problem of initial conditions. The maximum normal and tangential stresses are determined for different landing conditions and landing aircraft sizes. The fatigue life of the wire is determined based on classical theories.

Findings

The results show that maximum shear stresses occur at the end of the cable. These shear stresses increased with higher off-centre landing position and decreased tyre width. Between 50 and 70% of the service life of the cable is reduced due to the dynamic loading effects.

Originality/value

A novel technique based on the solution of a continuous elastic system is proposed for analysing the displacements and stresses on an arresting cable due to the impact of a landing aircraft. The derived stresses can be used to calculate the service life of the cable.

中文翻译：

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冲击着陆载荷下避雷电缆的振动和疲劳寿命

目的

本文旨在研究着陆飞机通过跑道时，制动电缆的疲劳寿命和动态载荷。

设计/方法/方法

假定电缆处于张力下且具有弯曲刚度。通过分析获得振弦的正常模式和固有频率。由于起降飞机的影响而导致的制动电缆的响应被建模为初始条件的问题。确定了不同着陆条件和着陆飞机尺寸的最大法向和切向应力。电线的疲劳寿命是根据经典理论确定的。

发现

结果表明，最大的剪应力出现在电缆的末端。这些剪应力随着偏心着陆位置的增加和轮胎宽度的减小而增加。由于动态负载效应，电缆的使用寿命缩短了50％至70％。

创意/价值

提出了一种基于连续弹性系统解的新颖技术，用于分析由于降落飞机的撞击而在制动电缆上产生的位移和应力。导出的应力可用于计算电缆的使用寿命。