地铁车辆前端吸能结构模块化设计

Modular Design of Front-end Energy-absorbing Structure for Metro Vehicle

为满足地铁车辆车体碰撞吸能性能的要求,对头车车体前端吸能结构进行了模块化设计,在压溃吸能梁上开设了诱导孔,并对其型腔结构形式和型材厚度进行了优化设计,优化结构在满足车体底架前端垂向刚度的前提下降低了车体纵向刚度,提高了前端吸能结构的吸能效率。该设计方案可适用于铝合金车体或不锈钢车体前端吸能结构设计。

In order to meet the requirements of carbody collision energy-absorbing performance,this paper proposes the modular design for front-end energy-absorbing structure of head car body.In the design scheme,the induced hole is set up for the deformable energy-absorbing beam,and the cavity structure and profile thickness are optimized reasonably,and the longitudinal stiffness of the vehicle body is minimized on the premise of meeting the vertical stiffness of the front-end of the vehicle body underframe,so as to improve the energy-absorbing efficiency of the front-end energy-absorbing structure.The design scheme is suitable for the design of front-end energy-absorbing structure of aluminum alloy car body or stainless steel car body.