The method of feed-in energy on disc brake squeal

Dihua, Guan; Huang, Jinchun

doi:10.1016/s0022-460x(02)01074-x

Cited by 41 publications

(13 citation statements)

References 3 publications

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“…Here, especially resonance f 3 shows a very large frequency interval where energy is provided to the system (from 5, 166 to 5, 574 Hz). The energy provision observed in the dissipated energy spectrum is similar to the concept of feed-in energy proposed by Guan and Huang (2003) or the negative viscous work by Papinniemi (2007) but is also applicable to modes which are not predicted by CEA to be unstable. Hence negative dissipated energy may be used as a potential indicator for brake squeal propensity.…”

Section: Forced Response (Dsa)supporting

confidence: 68%

The role of pad-modes and nonlinearity in instantaneous mode squeal

Oberst

Lai

2013

The Journal of the Acoustical Society of America

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Disc brake squeal is a major source of customer dissatisfaction and related warranty costs for automobile manufacturers. Although mode coupling is recognised as a mechanism often found in squealing brakes, recent research results show that friction induced pad-mode instabilities could be the cause of instantaneous mode squeal reported in the literature. In this paper, the nonlinear characteristics of instantaneous mode squeal initiated by pad-mode instabilities are studied by analysing phase space plots of vibrations and sound pressure for a numerical model of a pad-on-plate system as the friction coefficient increases. Results show that as the friction coefficient increases from 0.05 to 0.65, attractors of vibration in the phase space transits from limit cycle to quasi-periodic, showing signs of approaching chaotic behaviour. It is shown here that the correlation of the sound pressure behaviour in the phase-space with structural vibration is crucial to understanding the role of pad modes and nonlinearity in instantaneous mode squeal.

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Section: Forced Response (Dsa)supporting

confidence: 68%

The role of pad-modes and nonlinearity in instantaneous mode squeal

Oberst

Lai

2013

The Journal of the Acoustical Society of America

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“…4(b) these out-of-plane responses (U 2 z ) of P r and P t increase with the friction coefficient. As the pad is coupled via friction to the disc, in real life applications in some circumstances a feedback loop could be established, which would be able to feed energy back into the brake system [30]. markers, indicates that energy is provided by friction to the system [30].…”

Section: Complex Eigenvalue Analysismentioning

confidence: 99%

“…As the pad is coupled via friction to the disc, in real life applications in some circumstances a feedback loop could be established, which would be able to feed energy back into the brake system [30]. markers, indicates that energy is provided by friction to the system [30]. The two predicted unstable disc modes (n¼4 and n ¼5) both indicate a provision of energy for μ ¼ 0:30 and μ ¼ 0:46.…”

Section: Complex Eigenvalue Analysismentioning

confidence: 99%

Nonlinear transient and chaotic interactions in disc brake squeal

Oberst

Lai

2015

Journal of Sound and Vibration

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“…In order to predict the tendency of disc brake squeal, Guan proposed a finite element analysis method of feed-in energy on the brake system [41]. The main idea is to calculate the total feed-in energy of all node pairs of a finite element model that is induced during one cycle of vibration.…”

Section: Transient Response Analysismentioning

confidence: 99%

Analysis of Friction-Induced Vibration Leading to Brake Squeal Using a Three Degree-of-Freedom Model

et al. 2017

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Friction-induced vibration is a common phenomenon in nature and thus has attracted many researchers' attention. Many of the mathematical models that have been proposed on the basis of mode coupling principle, however, cannot be utilized directly to analyse the generation of friction-induced vibration that occurs between two bodies because of a difficulty relating model parameters to definite physical meaning for real friction pairs. In this paper, a brake squeal experiment is firstly carried out by using a simple beam-on-disc laboratory apparatus. Experimental results show that brake squeal correlates with the bending mode of the beam and the nodal diameter out-of-plane mode of the disc as well as the cantilever length of the beam. Then, a specific three degree-of-freedom dynamic model is developed of the beamon-disc system and the vibration behaviour is simulated by using the complex eigenvalue analysis method and a transient response analysis. Numerical simulation shows that the bending mode frequency of the beam a little greater than the frequency of the nodal diameter out-of-plane mode and a specific incline angle of the leading area to the normal line of the disc as well as a certain friction coefficient, are necessary conditions for the mode coupling of a frictional system. Results also show that when the frictional system is transited from a steady state to an unstable state for the variation of parameters, its kinetic and potential energy increase with time due to continuous feed-in energy from the friction force while the dynamic responses of the system change from the beating oscillation to the divergent, which leads to the friction-induced vibration and squeal noise.

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The method of feed-in energy on disc brake squeal

Cited by 41 publications

References 3 publications

The role of pad-modes and nonlinearity in instantaneous mode squeal

The role of pad-modes and nonlinearity in instantaneous mode squeal

Nonlinear transient and chaotic interactions in disc brake squeal

Analysis of Friction-Induced Vibration Leading to Brake Squeal Using a Three Degree-of-Freedom Model

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