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首页> 外文期刊>International Journal of Vehicle Noise and Vibration >Modelling of automotive disc brake squeal and its reduction using rotor design modifications
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Modelling of automotive disc brake squeal and its reduction using rotor design modifications

机译：汽车盘式制动器尖叫声的建模及其使用转子设计修改的减少

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摘要

This paper proposes a numerical approach to reducing disc brake squeal through rotor design modifications using the finite element method (FEM). The finite element (FE) model is validated based on the measured data extracted from experimental modal analysis for individual brake components in free-free boundary condition and brake assembly under applied pressure. The FE model is used to investigate brake squeal through two numerical approaches namely complex eigenvalue analysis and dynamic transient analysis. Experimental squeal tests are performed using a brake test rig for verification of the predicted results. It is observed that the results of both the complex eigenvalue analysis and dynamic transient analysis agree well with experimental squeal frequencies. In order to reduce brake squeal, a number of structural modifications on the disc are evaluated. The predicted results show that the squeal noise of disc brake is influenced by the natural frequency of the brake rotor and its mode shape. It is also found that a good choice of rotor geometry in the pre-design stage could help in reducing squeal noise.
机译：本文提出了一种数值方法，通过使用有限元方法（FEM）修改转子设计来减少盘式制动器的尖叫声。基于从实验模态分析中提取的实测数据验证了有限元（FE）模型，该实测数据是针对自由边界条件下的单个制动器组件以及施加压力下的制动器组件而进行的。 FE模型用于通过两种数值方法来研究制动尖叫声，即复杂特征值分析和动态瞬态分析。使用制动试验台进行尖叫试验，以验证预测结果。可以看出，复特征值分析和动态瞬态分析的结果都与实验尖叫频率吻合良好。为了减少制动啸叫，评估了盘上的许多结构修改。预测结果表明，盘式制动器的尖叫声受制动器转子的固有频率及其振型影响。还发现，在预设计阶段对转子几何形状的良好选择可以帮助减少尖叫声。

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