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http://dx.doi.org/10.5050/KSNVE.2014.24.12.954

Analysis of Natural Frequencies and Squeal Noise of KTX Brake Unit  

Goo, ByeongChoon (Korea Railroad Research Institute)
Na, InKyun (Korea Railroad Research Institute)
Publication Information
Transactions of the Korean Society for Noise and Vibration Engineering / v.24, no.12, 2014 , pp. 954-961 More about this Journal
Abstract
Brake squeal noise of KTX is very uncomfortable to passengers and workers in stations. A lot of study has been conducted to inquire into the mechanism of the squeal noise. But understanding of the brake squeal noise is still challenging. In this study, we developed a full-scale tester equipped with a KTX mechanical brake unit. And we measured the vibrational characteristics of each component of the brake unit and compared them with frequency response functions of brake squeal noise measured also in the tester. It was found that the brake squeal noise was more closely related to the vibrational characteristics of the brake pads and hangers in friction condition than those of free components.
Keywords
Brake Squeal Noise; Natural Frequency; Impact Test; KTX Brake Unit; Brake Disc; Brake Pad;
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Times Cited By KSCI : 7  (Citation Analysis)
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