航空飞行器驾驶员座椅抗坠毁性能分析

CRASHWORTHINESS ANALYSIS OF PILOT SEAT

抗坠毁性能是指在可生还的坠毁事故中通过飞行器结构变形或破坏达到保护乘员安全目的的能力.因此抗坠毁性能是飞行器结构设计的重要方面.目前关于飞行器座椅抗坠毁性能的研究主要采用的是简化的座椅模型,并且主要针对的是乘员座椅结构.论文以驾驶员座椅为研究对象,对其数值模拟方法和抗坠毁性能开展研究.基于实际驾驶员座椅几何模型,建立了座椅的有限元模型.基于建立的有限元模型,对座椅静强度和动强度进行研究.静态载荷包括前向、侧向、向下、向上和向后五种情况.向前9g载荷是最危险的工况.动态冲击载荷则包含了斜向下30度夹角的14g冲击载荷和前向10度夹角的16g冲击载荷.支撑杆两端在冲击过程中遭到了破坏.

Crashworthiness is the ability to keep people safe by structural deformation or damage during the crash accident.Hence crashworthiness is an important aspect of aviation structure design.The research on aviation seats crashworthiness is mainly using simplified seat model and occupant seat models.This paper conduct research on the numerical simulation methods and crashworthiness performance of the pilot seat with detailed seat model.The finite element model of the aerial seat is used to analysis the static strength with five loads and dynamic strength with two impact loads.The results of the simulation shows that the forward static load is the most dangerous condition under the static loads,and the pillars are destroyed during the impact.