基于复特征值法的轮盘制动尖叫噪声研究  

Screaming Noise Study of Wheel-disc Brake System Based on Complex Eigenvalue Method

作　　者：胡艳[1] 黄盼盼 

机构地区：[1]西南交通大学牵引动力国家重点实验室摩擦学研究所,四川成都610031 [2]济南轨道交通装备有限责任公司,山东济南250000

出　　处：《铁道机车车辆》2015年第1期54-56,共3页Railway Locomotive & Car

摘　　要：有限元法预测制动尖叫噪声较为成熟的方法是复特征值法。本文建立了轮盘基础制动装置的模型,运用复特征值法分析了摩擦系数、闸片材料的杨氏模量和泊松比对制动尖叫噪声发生趋势的影响。研究发现:降低闸片与摩擦盘之间的摩擦系数可以显著降低出现制动尖叫噪声的可能;适当增加闸片的杨氏模量可以有效抑制制动尖叫噪声;改变闸片材料的泊松比对制动尖叫噪声有一定影响,但效果并不明显。Complex eigenvalue method is a mature method of finite element method to predict brake screaming noise.The finite element model of wheel-disc brake system is established to study the brake squeal using complex eigenvalue method.In this article,the influence of frictional coefficient,Young＇s modulus and Poisson＇s ratio of the brake pad is studied.Research shows that reducing the friction coefficient or increasing the Young＇s modulus of the brake pad appropriately can suppress the occurrence of brake noise.Changing the Poisson＇s ratio of brake pad has little effect on suppressing the occurrence of brake noise.

关 键 词：复特征值 尖叫噪声 模态耦合 轮盘制动 

分 类 号：U270.351[机械工程—车辆工程]