Effects of material properties on generation of brake squeal noise using finite element method

Belhocine, Ali; Ghazaly, Nouby M.

doi:10.1590/1679-78251520

Cited by 58 publications

(22 citation statements)

References 24 publications

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“…The results of rule of mixture formulation indicate that the coconut shell-reinforced composite has a theoretical density of 1.073 g/cm 3 . This predicted value of the brake pad composite is in good agreement with recommended values of commercial brake pad whose densities fall between 1.010 and 2.060 g/cm 3 as reported by Abutu et al [18] and Efendy et al [25].…”

Section: Formulation Of Samples Using Rule Of Mixturementioning

confidence: 99%

“…This system consists of three major parts which include the brake pad, rotor and caliper [1,2]. Belhocine and Nouby [3] revealed that braking system is one of the most fundamental safety components in modern passenger cars as it is significant in stopping or slowing down of vehicles. Brake pads are used in the braking and transmission of various machinery as well as equipment such as aircraft, cars, motorcycles and other automobile vehicles.…”

Section: Introductionmentioning

confidence: 99%

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Production and characterization of brake pad developed from coconut shell reinforcement material using central composite design

et al. 2018

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In this work, locally sourced non-hazardous materials were used to produce brake pad using grey relational analysis (GRA) and experimental design via central composite design. Raw materials selected for production include coconut shell, epoxy resin (binder), graphite (friction modifier) and aluminum oxide (abrasive). Twenty-seven samples were produced separately using coconut shell as reinforcement material by varying process parameters. Formulation of the brake pads samples was done using rule of mixture and a weight percent of 52% reinforcement material, 35% binder, 8% abrasive and 5% friction modifier were used for the production. Grey relational analysis (GRA) shows that optimal process performance can be obtained using molding pressure, molding temperature, curing time and heat treatment time of 14 MPa, 140 °C, 8 min and 5 h, respectively. Optimized sample was produced using the optimal set of process parameters obtained from GRA and compared with commercially available sample produced by Ibeto Group. The experimental results showed that the performance of the optimized coconut shell-reinforced brake pad compared satisfactorily with commercially available samples and capable of producing less brake noise and vibration during application. Analysis of variance shows that curing time with a contribution of 30.38% and 31.40% have the most significant effect on the hardness and ultimate tensile strength of the coconut shell-reinforced friction material, respectively, while heat treatment time with a contribution of 46.3% and 24.23% have the most significant effect on the wear rate and friction coefficient of coconut shell-reinforced brake pad, respectively. The effects of all the factors on the properties of the friction materials are significant since their p values are greater than 0.010 (1%). Keywords Brake pads • Central composite design • Grey relational analysis • Coconut shell and characterization List of symbols Axial value µ Coefficient of friction Distinguishing coefficient u Percentage weight δ Densities f Volume fraction X Weight F Applied load d Disk diameter t Time of exposure of specimen to abrasion N Radial speed b Support span (mm) t Specimen thickness (mm) Deflection (mm) w Specimen width (mm) χ Distinguishing coefficient n Number of factor level combination k Performance value MT Molding temperature MP Molding pressure CT Curing time HTT Heat treatment time

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Section: Formulation Of Samples Using Rule Of Mixturementioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Production and characterization of brake pad developed from coconut shell reinforcement material using central composite design

et al. 2018

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“…Brake squeal phenomenon induces under-quality perception for industrial structures such as cars and trains, and its understanding is an important challenge [1,2,6,7,9,14]. Understanding squeal noise requires the analysis of brake systems from a "vibration and acoustics" point of view.…”

Section: Introductionmentioning

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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“…Numerical approaches have thus been used to study on the wear of the seal. Due to the widely used of Finite element method (FEM) in the structural analysis [ 24 ], a combination of the FEM and Archard wear model is normally adopted to simulate the seal wear [ 25 ]. The contact pressure is calculated by finite element analysis (FEA).…”

Section: Introductionmentioning

confidence: 99%

A Numerical Wear Simulation Method of Reciprocating Seals with a Textured Rod

2020

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Reciprocating rod seals are widely used in the hydraulic actuator to prevent the leakage of fluid. The sealing lip profile changes with the seal wear, resulting in an increase in the leakage. A texturing rod changes the lubrication characteristics of the seal, so it affects the wear and leakage of the seal. A numerical simulation method is proposed to investigate the wear of the hydraulic reciprocating seal with textured rods. Several kinds of macro-cavity textures on the rod surface, including circle, square and triangle shapes, have been simulated and discussed. The effects of three shape parameters including area ratio, depth, and ratio of the axial length to the circumferential length on the seal wear are analyzed in detail. The texturing rod slightly increases the seal wear, but decreases the seal leakage. When the rod speed is increasing, the wear time rates of the seal increase, while the wear distance rates decrease, regardless of the texture shapes. When the texture area ratio is increasing, the wear of the reciprocating seal increases. Seal wear decreases with an increasing texture depth during the outstroke, however, it increases during the instroke. The ratio of the axial length of the macro-cavity to the circumferential length has no effect on the seal wear.

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Effects of material properties on generation of brake squeal noise using finite element method

Cited by 58 publications

References 24 publications

Production and characterization of brake pad developed from coconut shell reinforcement material using central composite design

Production and characterization of brake pad developed from coconut shell reinforcement material using central composite design

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

A Numerical Wear Simulation Method of Reciprocating Seals with a Textured Rod

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