铝合金半挂车车架结构设计及有限元分析

Structural Design and Finite Element Analysis of Aluminum Alloy Semitrailer Frame

介绍了一种基于有限元分析的铝合金半挂车车架的结构设计。车架为梯形非全承载式结构,由左右两支纵梁焊合、若干横梁组件连接而成。零件选用6×××铝型材制作而成,连接方式为铆接或螺接。设计过程中通过有限元仿真,模拟车辆满载状态下弯曲、扭转、加速、转弯、制动等工况状态,并重点分析鞍座连接处的结构强度。经反复分析及结构优化,车架强度和刚度满足设计和使用要求,相比同类钢制车架,铝合金车架可减重30%~40%。

A structural design of aluminium alloy semi-trailer frame based on finite element analysis is introduced.The frame is a trap ezoidal non-fully loaded structure,which consists of left and right longitudinal beams welded together and several cross beam compo nents connected.The components are made of 6xxx aluminium profile,which are connected by riveting or screwing.In the design process,the finite element simulation is used to simulate the bending,torsion,acceleration,turning and braking conditions of the vehi cle under full load,and the structural strength of the saddle connection is mainly analyzed.Through repeated analysis,optimization of the structure and road test,it is proved that the aluminum frame can meet the design and use requirements.Compared with the similar steel frame,the aluminum frame can reduce the weight by 30%~40%.