ANALYSIS OF VIBRATION AND NOISE AT BRAKING WITH DISC BRAKES

Vasko Nikolov

Scientific paper ID 1052 : 2014/3

ANALYSIS OF VIBRATION AND NOISE AT BRAKING WITH DISC BRAKES

Vasko Nikolov

A method for analyzing the unstable vibration of automotive disc brake is presented. Numerical results and squeal frequencies of experimental tests are compared. Stationary components of the disc brake are modeled using finite elements. The contacts between stationary components and between disc and pads are considered. The disc is modeled as a thin plate and its modes are obtained analytically. The stationary and rotating parts of the disk brake are taken with the contact conditions at interface between the disc and the pads so that the vibration caused by the friction in the brake disc is considered as a moving load. Predicted unstable frequencies are close to the experimentally obtained squeal frequencies. The numerical simulation shows that the stability can be improved by shifting the central line of the pressure in the brake cylinder at the back of the pad.

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скърцане дискова спирачка моделиране крайни елементи.squeal disc brake modeling finite elements.Vasko Nikolov

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