客车座椅静强度与安全性的关系

The Correlation between Coach Seat Static Strength and Safety

从客车座椅设计的安全性能及其影响因素角度出发,仿真分析座椅总成静强度和靠背静强度,并针对客车座椅系统中疲劳破坏最早发生和应力值较大的调角器部位与座盆侧板连接部位进行实验,寻找出一组更合理的结构形式改进和材料优化方案:在车体前部受到撞击向后挤压变形时自动松开座椅的锁紧装置并推动座椅向后移动的结构形式改进,将调角器横管材料Q235和靠背连接处底部纵梁材料08Al优化为强度更高的SS490,为客车座椅的安全性设计提供理论依据.

From the point of view of safety performance and affecting factors in coach seat design, simulation analyseswere carried out about the seat assembly static strength and backrest static strength, and experimental analyses were alsocarried out about the recliner and the joints of seat basin and side plate which are under higher stress value and most like-ly to experience fatigue damage. A more reasonable program for structure improvement and material optimization wasfound out： upon the impact from the front end, the backward extrusion deformation automatically releases the seat lockingdevice and push the seat back; the material Q235 for the horizontal tube of recliner and 08 Al for the bottom carling of thejoints of backrest were optimized with SS490 for its higher strength, providing a theoretical basis for the passenger seatsafety design.