Abstract
This study concerns in-plane squeal of disk brake. In disk brake which is used in motor vehicle, as a result of progress in reducing out-of-plane squeal which caused by the coupling of the natural vibration of the out-plane direction of the disk and caliper of natural vibration, In-plane squeal which is caused by disk vibrates in the circumferential direction has become a problem. However, in-plane squeal has remained in the confirmation of the phenomenon caused by the test using actual equipment to this, the essence of the phenomenon is not clear. And since the deformation, such as expansion and contraction in the in-plane direction of the disk is not transmitted vibration in the air, there is a question of whether not the squeal does not occur. In this study, we focused on the natural vibration which disk brake vibrate in in-plane and out-plane at the same time, as a cause of in-plane squeal. At first, we verify the natural vibration mode by impact for disk brake which in-plane squeal has occurred. Secondly, reproduce the squeal and make the grasp of the in-plane squealing phenomenon by experimental apparatus which simplified a structure of the disk brake. Then from the results, we create an analysis model that be composed of only the essential elements that affect the squeal and to verify the validity of the squeal mechanism that is proposed by complex eigenvalue analysis of the model.
