TY型自卸车车架结构的改进设计  

Improved design of TY dump truck frame structure

作　　者：王景新[1] 王铁[1] 杨彦超[1] 彭朝晖[1] 李直[1] 王娜[1] 

机构地区：[1]太原理工大学车辆工程系,山西太原030024

出　　处：《机械设计》2013年第11期93-96,共4页Journal of Machine Design

基　　金：山西省高新技术产业化资助项目(2011-2368)

摘　　要：通过有限元计算,得到车架在加载30 t时的弯曲和扭转工况下的应力分布情况,结果表明车架存在应力集中现象,利用有限元方法和试验方法获得该车架自由状态下的前两阶固有频率及振型,结果均显示车架低阶频率偏小,动态特性较差。通过对车架结构的改进设计,车架纵梁改为变截面结构,并加装变速箱吊架。对新车架进行有限元稳态力学及模态分析,结果显示改进后的车架结构应力明显降低,低阶固有频率提高,说明该车架改进设计合理。The stress distribution and deformation of frame in bending and torsion condition with the load 30 tons which computed by FEA method show that there is stress concentration on frame.The frame＇s frequency is low and the dynamic performance is poor according to the first two modal frequencies and modes of frame at free conditions obtained by FEA and experimental method.To design the longitudinal beam for variable cross-section structure and redesign beams type.The results of finite element steady-state mechanics and modal analysis show that the stress of the improved frame structure is reduced significantly and low order natural frequency is improved.The design of the improved frame structure is reasonable.

关 键 词：车架 有限元 模态 结构改进 

分 类 号：U463.32[机械工程—车辆工程]