Thermal analysis of locomotive wheel-mounted brake disc

Ghadimi, Behnam; Kowsary, Farshad; Khorami, Majid

doi:10.1016/j.applthermaleng.2012.10.051

Cited by 76 publications

(18 citation statements)

References 12 publications

Supporting

Mentioning

Contrasting

Unclassified

Order By: Relevance

“…B. Ghadimi et al conducted a three-dimensional simulation analysis on the brake temperature field of the wheel-mounted brake disc of an ER24PC locomotive and compared the results with experimental results. This research shows that the convection design of the brake disc has little effect on the maximum temperature during the braking process and the maximum temperature value depends on the braking deceleration [13] . Dae-Jin et al studied the influence of thermal stress on the contact surface of the brake disc under different contact pressure distributions by using a three-dimensional finite element model.…”

Section: School Of Mechanical Electronic and Control Engineeringmentioning

confidence: 86%

Simulation Analysis and Verification of Temperature and Stress of Wheel-Mounted Brake Disc of a High-Speed Train

Wang

Dong

2020

Preprint

View full text Add to dashboard Cite

During the braking process, a large amount of heat energy is generated at the friction surfaces between the brake disc and pads and rapidly dissipates into the disc volume. In this paper, a three-dimensional thermo-mechanical coupling model of high-speed wheel-mounted brake discs containing bolted joints and contact relationships is established. The direct coupling method is used to analyse the temperature and stress of the brake discs during an emergency braking event with an initial speed of 300 km/h. A full-scale bench test is also conducted to monitor the temperatures of the friction ring and bolted joints. The simulation result shows that the surface temperature of the friction ring reaches its peak value of 413.7°C after 102 s of braking, which agrees well with the bench test result. The maximum alternating thermal stress occurs in the bolt hole where the maximum circumferential compressive stress is -658 MPa and the maximum circumferential tensile stress is 134 MPa. During the braking process, the out-of-plane deformation of the middle part of the friction ring is larger than that of the edge, which increases the axial tensile load of the connecting bolt. This work provides support for the design of brake discs and connecting bolts.

show abstract

Section: School Of Mechanical Electronic and Control Engineeringmentioning

confidence: 86%

Simulation Analysis and Verification of Temperature and Stress of Wheel-Mounted Brake Disc of a High-Speed Train

Wang

Dong

2020

Preprint

View full text Add to dashboard Cite

show abstract

“…Ghadimi et al [21] used a three-dimensional FEM model of the wheel-mounted brake disc of a locomotive to determine temperature evolution on the surface of the disc and the cooling fins in the course of a single emergency brake application. Computational fluid dynamics software was used to calculate heat transfer coefficient, related to cooling by air, at each step of the simulation.…”

Section: Temperature Calculations In Railway Disc Brakementioning

confidence: 99%

“…Ghadimi et al [22] is a continuation of the work published in [21]. Using the same model, numerical calculation of temperature fields in the course of drag and stop brake application were carried out.…”

Section: Temperature Calculations In Railway Disc Brakementioning

confidence: 99%

Frictional Heating in Railway Brakes: A Review of Numerical Models

Wasilewski

2018

Arch Computat Methods Eng

View full text Add to dashboard Cite

In the design process of a railway vehicle it is crucial to determine the operating temperature of the brake friction elements. The thermal load related to braking depends on both the design of the vehicle and its braking system but also on the operating conditions in service. It is therefore justified to model frictional heating of the friction elements in the design phase. As railway braking differs substantially from automotive or aircraft braking, current review article is focused on the published literature concerning specifically modelling of railway tread and disc brakes. However, to present the complete picture of the state-of-the-art, studies undertaking related topics concerning frictional heating are also discussed. It is concluded that the existing models should be further developed to account for mutual coupling of operation conditions and the coefficient of friction.

show abstract

“…Recently, many researchers have been interested in the FG annular disks due to importance of these basic structures in mechanical and aerospace engineering and also simple grading of their material properties along the radial direction. These types of disks have many applications in engineering systems such as brake disks [7–11], high speed gears [12], turbine rotors [13,14], gyroscopic control systems [15], flywheel [16,17], airplanes, and rockets [18]. There are some works conducted by different researches in order to develop the closed-form solution for stress and strain fields in the rotating FG disks, cylinders, and spheres subjected to mechanical and thermal loadings [19–24].…”

Section: Introductionmentioning

confidence: 99%

Analytical solution for magneto-thermo-elastic responses of an annular functionally graded sandwich disk by considering internal heat generation and convective boundary condition

Dini

Nematollahi

Hosseini

2019

Jnl of Sandwich Structures & Materials

View full text Add to dashboard Cite

In this paper, an exact solution for stress distribution of a rotating sandwich disk subjected to magnetic, thermal fields, and convection heat transfer with the consideration of internal heat generation is presented. The sandwich disk is composed of three different layers in which the central layer is made of functionally graded material, whereas the inner and outer layers are made from pure metal and ceramic materials, respectively. All mechanical and thermal properties of the central layer are assumed to obey a power-law form in the radial direction with different non-homogeneity constants. Axisymmetric temperature distributions in each layer are obtained by solving Fourier heat conduction equation. By substituting the constitutive equations in equilibrium equation, a second-order differential equation in terms of radial displacement for each layer is derived by considering centrifugal force and Lorentz magnetic force obtained from Maxwell’s relations. Thereafter, the governing equations are analytically solved and radial displacement, radial and circumferential stresses for the current disk are obtained. Numerical simulations reveal the effects of internal heat generation, convection heat transfer, magnetic field, material properties, and angular velocity on the magneto-thermo-elastic response of the functionally graded sandwich disk. Also, a comparison study between metal, functionally graded, ceramic, and functionally graded sandwich disks is performed.

show abstract

Thermal analysis of locomotive wheel-mounted brake disc

Cited by 76 publications

References 12 publications

Simulation Analysis and Verification of Temperature and Stress of Wheel-Mounted Brake Disc of a High-Speed Train

Simulation Analysis and Verification of Temperature and Stress of Wheel-Mounted Brake Disc of a High-Speed Train

Frictional Heating in Railway Brakes: A Review of Numerical Models

Analytical solution for magneto-thermo-elastic responses of an annular functionally graded sandwich disk by considering internal heat generation and convective boundary condition

Contact Info

Product

Resources

About