基于有限元方法的某型航空机轮刹车振动模态分析  

Aircraft Wheel Brake Vibration Modal Analysis Based on Finite Element Method

作　　者：刘文胜[1] 项立东 马运柱[1] 杨肃[1] 裴书杨 

机构地区：[1]中南大学粉末冶金研究院,长沙410083

出　　处：《航空精密制造技术》2015年第5期24-27,共4页Aviation Precision Manufacturing Technology

基　　金：国家高技术研究发展计划(863重点计划)基金资助项目(2009AA034300)

摘　　要：采用CATIA建立某型机轮刹车盘的三维实体模型,经简化后获得其有限元模型;利用ANSYS有限元分析软件,对刹车盘进行复模态分析。提取了系统的前30阶模态,显示其振型为弯曲和扭转形态,摩擦因子越大则阻尼比越大;仿真结果表明弯曲模态是导致振动耦合的主要模态,摩擦因子越大,耦合效应越明显。The aircraft rotors and stators contact each other to generate frictional force, leading to wheel vibration.The 3D entity model of a certain type of aircraft wheel brake disc was established by using CATIA. The complex mode analysis was carried out on the brake disc to obtain its finite element model after simplifying it by using the ANSYS finite element analysis software. The first 30 order modal of the system was extracted. It was found that the mode shape is bending and torsion, and the greater the friction coefficient, the greater the damping ratio. The simulation results show that the bending modal is the leading cause of coupling vibration modal, the greater the friction coefficient, the more obvious the coupling effect.

关 键 词：盘式刹车 有限元法 复模态分析 摩擦因子 

分 类 号：V226.6[航空宇航科学与技术—飞行器设计]