Influence of contacting shape of partial wear on friction properties of copper-based materials for trains

Han, Xiaoming; Zhao, Chong; Yang, Junying; L, Su; Fu, Rong; Gao, Fei

doi:10.1177/13506501221147988

Cited by 3 publications

(3 citation statements)

References 20 publications

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“…3 On the micro-scale, the increase of temperature will lead to the change of material properties in the contact zone, which will affect the contact behavior between the asperity and the friction and wear process. 4 Therefore, extensive investigations have been conducted to clarify the factors that are relevant to the brake disc temperature field, such as brake disc material and structure, 5–8 brake pad material, 9–12 shape, 13–15 and arrangement pattern. 16–18 Results demonstrated that, the brake pad shape and arrangement pattern cause the difference of distribution of friction arc length and brake force, which affects significantly the thermal distribution on the disc.…”

Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of the relationship between friction area and temperature of aluminium-based brake disc

Chen,

Yao,

Yang

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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Clarifying the relationship between friction area and brake disc temperature is helpful to optimizing the brake pad structure. Aluminium-based brake disc temperature paired with circular friction blocks of different diameters (45, 60, and 65 mm) is obtained by the TM-I-type reduced-scale inertial braking dynamometer at braking speeds 60–160 km/h and braking force 1.66 kN. On the basis, the thermo-mechanical coupling model of friction pair is established to simulate the evolution of brake disc temperature by ADINA finite-element software, and the thermal energy gradient factor is proposed. Results indicate that the numerical brake disc temperature agrees with the measured, validating the numerical model. The friction area caused the difference of braking pressure, which affects the brake disc temperature. The decrease in the friction area accelerates the disc temperature rise and increases the area ratio of high-temperature zone and maximum temperature difference. The influence degree of friction area on the brake disc temperature varies with friction zone. The thermal energy gradient factor can effectively predict the distribution of temperature gradient on the disc surface.

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Section: Introductionmentioning

confidence: 99%

Numerical and experimental study of the relationship between friction area and temperature of aluminium-based brake disc

Chen,

Yao,

Yang

et al. 2024

Proceedings of the Institution of Mechanical Engineers, Part J:

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“…Zhang et al 9 developed a coupled heat-structure model in order to simulate and investigate the temperature field and contact pressure distribution of brake pads with varying wear patterns during emergency braking scenarios. Han 10 and Xiang 11 conducted tests and finite element simulation studies on the relationship between the braking pad structure and the braking disc temperature of high-speed trains and discovered that the tribological behaviors of the braking interface are significantly affected by the braking pad structure. Hatam 12 presented an approach for the finite element modeling of wear based on the Archard wear equation and conducted experiments to validate its accuracy.…”

Section: Introductionmentioning

confidence: 99%

Analysis of the tribological behavior of the high-speed and heavy-load braking interface with dynamic wear of brake pads

Jie

Xiaowei

Zhu

et al. 2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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Using a megawatt wind turbine disc brake as a case study, this work analyzes the effects and action mechanism of dynamic wear on the braking interface of the braking pad on tribological behaviors as contact state, temperature field, and pressure distribution. The Archard wear model was incorporated into the solution of the tribological problem of the braking interface in ABAQUS using the arbitrary Lagrangian–Eulerian (ALE) technique through the UMESHMOTION subroutine. The wear interface meshes were changed without modifying other finite element analysis variables. Moreover, wear testing on the inertia braking tester validated the coupled heat-stress-wear model of the brake pad. The differences in the tribological behaviors of the braking interface with and without the dynamic wear of the braking pad were analyzed based on the simulation results of friction and wear in a braking cycle. The study revealed that the tribological behaviors of the braking interface were significantly affected by the dynamic wear of the braking pad. Specifically, the wear evolution changed the contact state, the area of stress concentration, and the temperature field distribution during the braking process. Hence, the wear properties of the brake pad were modified as a result of these tribological behaviors.

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“…Ghatrehsamani 24 developed a model capable of predicting the variation of the aforementioned parameters by use of AWM model. Han et al 25 studied the influence of contacting shape on the tribological performance, the influence of contacting shape on the tribological performance. Jiang 26 studied the wear behaviors and mechanisms of AISI H13 steel as a function of sliding speed and hardness, through investigating morphologies, compositions, and phases of worn surfaces.…”

Section: Introductionmentioning

confidence: 99%

Numerical study on sealing performance after wear of plug valve during opening–closing process

Lu,

Zhu,

2023

Proceedings of the Institution of Mechanical Engineers, Part J:

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The failure of the plug valve seal may result in dangerous accidents in the production and transportation process of petroleum and chemical products. In the paper at hand, the operating life of the plug valve is studied in the opening–closing process. The adhesion wear between the sealing surface of the plug valve is numerically studied in micro-scale, and the contact force between the sealing surface is balanced with the internal flow field of the plug valve and the deformation force between the set screw and the spool. The internal flow field of the plug valve in opening–closing process is calculated by finite element method. The deformation coupling model between the set screw and the spool is built to analyze the structure and the mechanics of the plug valve. Then, a leakage identification algorithm based on auto-correlation function is implemented for analyzing contact stress of the plug valve's sealing surfaces after wear. Finally, taking plug valve F-2 ISO-STANDARD as an example, the force of turbulent flow field on the spool is calculated during the closing process. Results show, that while the maximum contact stress increases, the pressure decreases, and the displacement trajectory of spool increases. The operating life decreases by increasing the roughness of the spool sealing surface. The model proposed provides a new practical method to evaluate the operating life of the plug valve, which is a good guidance for the design of the valve.

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Influence of contacting shape of partial wear on friction properties of copper-based materials for trains

Cited by 3 publications

References 20 publications

Numerical and experimental study of the relationship between friction area and temperature of aluminium-based brake disc

Numerical and experimental study of the relationship between friction area and temperature of aluminium-based brake disc

Analysis of the tribological behavior of the high-speed and heavy-load braking interface with dynamic wear of brake pads

Numerical study on sealing performance after wear of plug valve during opening–closing process

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