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建立了铁路客车车轮双侧踏面制动系统的有限元模型,利用ABAQUS软件对该制动系统进行制动摩擦尖叫噪声和颤振的有限元复特征值预测分析。在有限元模型中,闸瓦与车轮之间的法向力根据接触计算确定,不需假设接触弹簧。该模型考虑了制动系统部件材料特性、摩擦系数、转动速度和闸瓦压力对尖叫噪声和颤振的影响。分析结果显示,闸瓦压力角对制动尖叫和颤振有重要影响,当闸瓦压力角α=5°时,制动系统发生尖叫噪声和颤振的可能性最低。计算结果还显示,摩擦系数越大,系统发生尖叫噪声和颤振的趋势就越大。
The finite element model of the double-sided braking system of the railway passenger car wheel was established. The finite element complex eigenvalue analysis of the brake-screened noise and flutter of the braking system was carried out by ABAQUS software. In the finite element model, the normal force between the brake shoe and the wheel is calculated on the basis of contact calculations, without the need to assume contact springs. The model takes into account the material properties of the braking system components, the friction coefficient, the rotational speed and the brake shoe pressure on the screaming noise and flutter. The analysis results show that brake shoe pressure angle has an important influence on brake squeal and flutter. When the brake shoe pressure angle α = 5 °, the brake system has the lowest possibility of squeal noise and flutter. The calculation results also show that the greater the friction coefficient, the greater the tendency of the system to scream noise and flutter.