基于nCode的新型汽车半轴的疲劳分析  

Fatigue Analysis of New-type Car Axle Shaft Based on n Code Design-life

作　　者：戴俊平[1] 栗宜猛 尤迪[1] 牛建华[1] 

机构地区：[1]陕西理工学院机械工程学院,陕西汉中723003

出　　处：《机械工程师》2015年第4期66-68,共3页Mechanical Engineer

摘　　要：根据汽车半轴实际受力状况和摆线型面联接的特点提出一种新型半轴,并且运用有限元理论和疲劳分析理论对其进行有限元分析和疲劳可靠性分析。首先对新型半轴的简化结构进行了建模和有限元静态特性分析,然后定义了载荷谱和材料参数,选用S-N疲劳设计,利用疲劳分析软件n Code Design-Life对该结构进行了疲劳可靠性分析,得出模型的疲劳损伤云图和各节点的疲劳寿命,确定了容易发生疲劳破坏的位置和各节点的疲劳寿命,为半轴结构的进一步优化设计提供了理论依据。This paper puts forward a new type of axle shaft based on the actual stress and the characteristics of cycloidal surface. The finite element analysis and fatigue reliability analysis are finished using FEM and fatigue theory. Firstly ,the finite element model of the axle shaft is established and its static character is analyzed. Then load spectrum and material parameters are defined,S-N curve fatigue design and the nCode Design-Life software are used to analyze fatigue reliability of the axle shaft. Fatigue nephograms and fatigue life of every node are obtained. A scientific design reference were provided for the optimization design.

关 键 词：摆线 半轴 疲劳分析 n CODE Design-Life 

分 类 号：TH122[机械工程—机械设计及理论]