Abstract
Two kinds of disk brakes are used in cars. One is called a "floating type disk brake", and the other is called a "rigid type disk brake". In this paper, the squealing mechanism and the effect of squeal reduction by cutting a part of the pad surfaces in the circumferential direction are investigated in both types of disk brakes. These results are compared with each other. Moreover, the frictional vibration of a block subjected to distributed friction at the contact surface was treated analytically and experimentally, and a common mechanism of vibration of the block and disk brake was found.
