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The Effect of Vibration Transmission on Brake Judder Reduction
Date Issued
2007
Date
2007
Author(s)
Tang, Chien-Chia
DOI
zh-TW
Abstract
Owing to the higher standard of driving comfort, brake judder has become an important issue in automotive design. It is, in general, caused by the variation of braking disk thickness (DTV). In tradition, the problem was solved by replacing or regrinding the disks, which can only have a temporary effect and will re-happen again after a period of use. Therefore, this research attempts to establish a model for brake judder transmission by virtual prototyping technique. Validated by theoretical equations of motion and field tests, sensitive analyses of key parameters in steering and suspension are performed and the measure for brake judder reduction is approached. It is found that DTV will induce the variation of braking torque. The phase difference between right and left front wheel torque variation and the resonance of lower control arm bushings are the main reasons of steering shimmy. Moreover, increasing the stiffness and damping of lower control arm rear bushing and the steering column inertia can effectively reduce the shimmy caused by brake judder.
Subjects
煞車抖振
虛擬原型
電腦輔助工程
brake judder
virtual prototyping
computer-aided engineering
Type
thesis
File(s)
No Thumbnail Available
Name
ntu-96-R94522614-1.pdf
Size
23.53 KB
Format
Adobe PDF
Checksum
(MD5):7e1abbca03ce703202bdd9b59d265042