A double modal synthesis approach for brake squeal prediction

Monteil, Mélodie; Besset, Sébastien; Sinou, Jean-Jacques

doi:10.1016/j.ymssp.2015.07.023

Cited by 27 publications

(16 citation statements)

References 24 publications

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“…This general process with the application on the brake model under study was explained previously in detail in [22]. Convergence of Craig and Bampton method for a similar finite element brake system has also been discussed in [25]. Secondly, a reduction method using complex interface modes is applied in order to condense the pad/disc section (i.e., the remaining physical interface degrees of freedom that are kept unreduced via the Craig and Bampton method).…”

Section: Reduction Methods Adapted To Numerical Brake Modelmentioning

confidence: 99%

Simulation of Transient Nonlinear Friction-Induced Vibrations Using Complex Interface Modes: Application to the Prediction of Squeal Events

Sinou

Besset

2017

Shock and Vibration

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During the past decades, the problem of friction-induced vibration and noise has been the subject of a huge amount of works. Various numerical simulations with finite elements models have been largely investigated to predict squeal events. Although a nonlinear analysis is more predictive than Complex Eigenvalues Analysis, one of the main drawbacks of the time analysis is the need of large computational efforts. In view of the complexity of the subject, this approach appears still computationally too expensive to be used in industry for finite element models. In this study, the potential of a new reduced model based on a double modal synthesis (i.e., a classical modal reduction via Craig and Bampton plus a condensation at the frictional interface based on complex modes) for the prediction of self-excited vibrations of brake squeal is discussed. The effectiveness of the proposed modal reduction is tested on a finite element model of a simplified brake system. It will be shown that numerical results of times analysis by applying the proposed reduction correlate well with those of the nonlinear analysis based on a reference model, hence demonstrating the potential of using adapted modal reductions to predict the squeal propensity and to estimate self-excited vibrations and noise.

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Section: Reduction Methods Adapted To Numerical Brake Modelmentioning

confidence: 99%

Simulation of Transient Nonlinear Friction-Induced Vibrations Using Complex Interface Modes: Application to the Prediction of Squeal Events

Sinou

Besset

2017

Shock and Vibration

Self Cite

View full text Add to dashboard Cite

show abstract

“…The method of Craig & Bampton reduction is applied to the model, which is considered to be effective since it captures the dynamic properties at the contact interface and also the internal dynamic properties of the models involved in contact. More detailed description of Craig & Bampton method used in brake squeal application can be found in literature [3] and [12]. In accordance with the Craig and Bampton theory, the vector and the matrices and are split between internal and interface degrees of freedom as follows:…”

Section: Model Reductionmentioning

confidence: 99%

Shape optimization of a disc-pad system under squeal noise criteria

et al. 2020

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This paper deals with the parametric shape optimization of a simplified model of brake system under squeal noise criteria. As brake squeal phenomenon induces under-quality perception for industrial structures such as cars and trains, its understanding and management are important challenges for future systems design. Hence, we expose an optimization methodology based on meta-model for a proposed computationally expensive stability criteria representing the squeal noise. Sensitivity analysis is first conducted to assess and validate the chosen geometrical parameters. Then, a Pareto front is obtained through optimization of the system, leading to a set of optimal solutions for the considered multi-objective case.

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“…Moreover, the modecoupling type of instability has been used to investigate the prediction of unstable vibration modes using the complex eigenvalue analysis (CEA) [32]- [34]. The closeness of squeal natural frequencies and mode shapes of a rotating brake disc with the natural frequencies and mode shapes of a stationary rotor have studied by Nishlwakl et al [35] and Monteil et al [36]. Instability analysis of the brake system has been carried out through the non-linear contact pressure analysis by several studies [37]- [42].…”

Section: Brake Instability Literaturementioning

confidence: 99%

An Integrated Approach for Instability Analysis of Lattice Brake System Using Contact Pressure Sensitivity

et al. 2020

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This paper presents an attempt to evaluate the sensitivity of lattice parameters on the contact pressure instability of newly lattice brake disc. The instability characteristics are investigated through theoretical representation, modal analysis experiments, and nonlinear finite element thermo-mechanical analysis. Lattice properties are defined concerning the lattice truss angle geometry in the unit cell and periodicity of the lattice cell on the lattice plate. Motion dynamics of lattice plate concern the principal coordinates on the rotating disc are presented to use in the braking system. The modal behaviour of vanned and lattice brake disc/pad systems are defined through experimental modal analysis at free-free boundary conditions, and results are used as inputs of nonlinear finite element models as it goes through a partial simulation of the SAE J2521 drag braking noise test. Subsequently, the dynamic instability analysis of the brake disc is detailed by using the complex eigenvalue extraction technique concerning the contact pressure and lattice parameters effect. The sensitivity analysis of the brake instability respected to the mass fraction factor and relative density of the lattice structure is presented by using the average standard deviations of the contact pressure force. The likelihood of instability occurrence is quantified by definition of a single indicator derived from the system eigenvalues. The analysis indicates that the higher relative density with lower mass fraction factor of lattice structure is led to a higher temperature at the disc and pad surface. Mutually, the higher mass fraction factor with lower relative density is led to the lower temperature. The maximum contact pressure is observed in the model with less mass fraction factor and more uniform pressure distributions are observed at higher values of the mass fraction factor. The instability analysis points out that high instability frequencies are predicted at lower mass fraction factor and higher relative density.

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A double modal synthesis approach for brake squeal prediction

Cited by 27 publications

References 24 publications

Simulation of Transient Nonlinear Friction-Induced Vibrations Using Complex Interface Modes: Application to the Prediction of Squeal Events

Simulation of Transient Nonlinear Friction-Induced Vibrations Using Complex Interface Modes: Application to the Prediction of Squeal Events

Shape optimization of a disc-pad system under squeal noise criteria

An Integrated Approach for Instability Analysis of Lattice Brake System Using Contact Pressure Sensitivity

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