Prediction of Brake Moan Noise using CAE Techniques FCA Engineering India Pvt, Limited

Format:

Book

Conference/Event

Author/Creator:

S, Gurumoorthy, author.

Contributor:

Allipur, Srikanth Reddy

Grandhi, Sreshti

Conference Name:

SAE WCX Digital Summit (2021-04-13 : Live Online, Pennsylvania, United States)

Language:

English

Physical Description:

1 online resource cm

Place of Publication:

Warrendale, PA SAE International 2021

Summary:

Brake moan noise is a friction induced phenomenon occurring at very low brake pressure, speeds and in the frequency range of 100 ~ 500 Hz. Moan noise is induced due to stick-slip phenomenon between brake rotor and pad. In this paper, prediction of moan noise through use of the complex eigenvalue method along with other static steps using ABAQUS is described. Nonlinear static analysis is done for brake pressure and followed by a rotational speed, which is imposed on the disc to provide a sliding motion between the pads and the disk. From the pre-stressed condition at the end of the static analysis, the tangent stiffness matrix is found out by linear perturbation method (modal analysis) and carried out to the complex Eigen value analysis. In the eigenvalue analysis, instability modes of the brake assembly are calculated by considering the nonlinear effect of loading and contacts. In order to have a satisfactory test correlation, the stiffness of the suspension parts needs to be included in the simulation. This paper attempts to improve the percentage of correlation by capturing stiffness of the suspension part in an appropriate manner. The mode shape and the Eigen values for the instability modes are calculated, by using the complex Eigen value analysis and good correlation is achieved between CAE and test results with less deviation. In the brake moan noise simulation, "Component Contribution Factor (CCF)" is also calculated as an output parameter to find out the part which is contributing more at the instability mode. The friction coefficient between the pad-rotor interfaces is the key source for instability. Since the braking pressure changes the contact stiffness between the rotor and the pads, it has significant consequences in the unstable frequency. So a comprehensive study is performed for evaluating the brake instability due to the change in the friction coefficient and the brake pressure

Notes:

Vendor supplied data

Publisher Number:

2021-01-0811

Access Restriction:

Restricted for use by site license