Abstract
It has been becoming to be higher that the requirements for car performance on quietness and comfortable as the performance of cars are refined. That is similar to brake squeal which is caused by braking. It is one of important subjects of technology to develop the countermeasure for brake squeal. Disc brake squeal is occurred by vibration of brake component caused by applying variation of friction force to rotating disc. In this study it considered a model being able to apply friction force to rotating disc to analyze brake squeal on base of simulating a fact phenomenon of squeal. As the result it has been found out that the modeling was possible by applying lubrication theory. Also as the results of analyzing on friction characteristic by using this model, variation of dì/dV (one of friction characteristic) in radial direction effects on brake squeal.