基于有限元方法的汽车传动轴研究  

Research of Automobile Transmission Shaft based on Finite Element Method

作　　者：钟自锋[1] 聂鹏[1] 卢剑[1] 

机构地区：[1]华东交通大学轨道交通学院,江西南昌330013

出　　处：《机械传动》2016年第6期155-157,共3页Journal of Mechanical Transmission

基　　金：华东交通大学校立课题(15GD01);华东交通大学教务处课题(JYZY1508)

摘　　要：为了提高传动轴设计的可靠性和合理性,基于有限元方法其对某汽车传动轴进行自由模态分析、扭转刚度分析、强度分析和疲劳分析。分析结果表明,其一阶固有频率均比激振频率高15%,能够有效地避免发生共振;扭转刚度27 685.5 N·m/rad,符合刚度要求。其最大主应力位于轴管处,为185.2 MPa,安全系数为1.32,能够满足强度要求;该传动轴的最小寿命为5.385×107,疲劳寿命满足要求。In order to improve the reliability and rationality of a automobile transmission shaft design,the free modal,torsional stiffness,static strength and fatigue strength of a transmission shaft are analyzed based on the finite element method. The result shows that the first-order natural frequency is 15% higher than the excitation frequency,so the resonance will be effectively avoided. The torsional rigidity is 27 685. 5 N·m / rad,it meets the stiffness requirement. The maximum stress is located at the shaft tube,its value is 185. 2 MPa,the safety factor is 1. 32,it meets the strength requirements. The minimum life is 8. 165 × 107,it meets the fatigue life requirements.

关 键 词：传动轴 模态 刚度 强度 疲劳 

分 类 号：U463.2[机械工程—车辆工程]