The method presented in this work intends to analyze drum brake design parameters of a light duty automotive drum brake system. The main objective of this work is to correlate brake materials and unstability parameters to identify which condition will effectively reduce squeal propensity. The methodology involves (a) the finite-element method of the brake components, namely, drum, shoes, and frictional linings, (b) static calculations to get a pre-stress state around which (c) is computed the complex eigenvalues of the system. Hence, positive real parts indicate dynamic instabilities which are explored by varying parameters, namely, the modulus of elasticity of the materials and the friction coefficient at the contact of the shoes with the drum. According to calculations, it was observed that there exist a given range of values for Young’s modulus and friction coefficient that are favorable to reduce drum brake squeal occurrence. In addition, the method proposed delivered results that match with brake squeal literature.

本工作中提出的方法旨在分析轻型汽车鼓式制动系统的鼓式制动器设计参数。这项工作的主要目标是关联制动材料和不稳定性参数，以确定哪种情况将有效降低尖叫倾向。该方法涉及 (a) 制动部件的有限元方法，即制动鼓、蹄片和摩擦衬片，(b) 静态计算以获得预应力状态，围绕该状态计算 (c) 的复特征值系统。因此，正实部表示动态不稳定性，这是通过不同参数探索的，即材料的弹性模量和鞋与鼓接触时的摩擦系数。根据计算，据观察，杨氏模量和摩擦系数存在一个给定范围的值，这些值有利于减少鼓式制动器尖叫声的发生。此外，该方法提出的结果与刹车尖叫文献相匹配。