Treatment of Substructure Rigid-Body Modes in Close-Loop Coupling Disc Brake Squeal Model

Pu Gao; Yong Chang Du; Huai Cheng Xia

doi:10.4028/www.scientific.net/AMM.668-669.298

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HomeApplied Mechanics and MaterialsApplied Mechanics and Materials Vols. 668-669Treatment of Substructure Rigid-Body Modes in...

Treatment of Substructure Rigid-Body Modes in Close-Loop Coupling Disc Brake Squeal Model

Abstract:

It’s found that the rigid-body modes of brake pads and brake caliper have significant influence on squeal occurrence while analyzing disc brake squeal problems using close-loop coupling disc brake squeal model. The modal shapes of these rigid-body modes calculated from finite element method (FEM) are linear combination of multiple translational and rotational motions, which is unfavorable for further analysis. In this paper, method to achieve ‘pure’ rigid-body modes such as translations along and rotations on its principal axes of inertia is presented. Modal shapes derived from this method consist with those from FEM model under suitable constraints. The result is used in substructure modal composition analysis on a disc brake squeal problem, where the effects of specific rigid-body modes can be shown clearly. The method is helpful for researchers to choose right measures to suppress squeals.

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Periodical:

Applied Mechanics and Materials (Volumes 668-669)

Pages:

298-301

DOI:

https://doi.org/10.4028/www.scientific.net/AMM.668-669.298

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Online since:

October 2014

Authors:

Pu Gao, Yong Chang Du, Huai Cheng Xia

Keywords:

Brake Squeal, Close-Loop Coupling Model, Disc Brake, Rigid Body Mode, Sub-Structure Modal Composition

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References

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