塞斯纳172R型飞机刹车活塞杆疲劳断裂有限元分析  

Fatigue Fracture Finite Element Analysis for Brake Piston Rod of Cessna 172R

作　　者：许冀威[1] 赵铭[2] 

机构地区：[1]中国民航飞行学院航空工程学院,四川广汉618307 [2]中国民航飞行学院飞机修理厂,四川广汉618307

出　　处：《机械设计与制造》2015年第4期221-223,共3页Machinery Design & Manufacture

基　　金：中国民航飞行学院自然科学基金重点项目(ZJ2013-06)

摘　　要：机轮刹车系统决定了飞机的着陆安全,是民用飞机地面减速关键的机构。以塞斯纳172R型飞机刹车活塞杆为研究对象,结合实际运行经验分析活塞杆受力情况,并制定载荷谱;基于材料力学和疲劳断裂力学等相关理论,利用CATIA软件建立刹车活塞杆三维实体模型,导入ANSYS软件中对其结构进行有限元分析,计算得到活塞杆的应力云图,确定应力集中(危险)位置。并应用疲劳耐久性分析软件FE-SAFE对活塞杆进行疲劳分析,确定该部件的安全使用寿命,为维护时间间隔的修订提供理论依据。The wheel braking system of aircrtrfi plays a vital role in safe landing, which is the key mechanism for aircraft slow downon the grouncL The brake piston rod of Cessna 172R aircraft is as the research object, which could be a force analysCscombining with the actual operation experience, and formulates the load spectrum. Based on the theory of material mechanics and fatigue fiacture mechanics, three--dimensional entity model of the brake piston rod of Cessna 172R aircraft is established by CATIA sofiwareand imported into ANSYS software for finite element structure analysis. Calculates the stress nephogram, and determines the stress concentration （dangerous） position. And fatigue analysis is carried out on the piston rod by fatigue durability analysis software FE-SAFE, determiningthe safety life of the components, and provide a theoretical basis for the revision of the maintenance interval.

关 键 词：有限元分析 疲劳寿命 ANASYS FE-SAFE 

分 类 号：TH16[机械工程—机械制造及自动化]