Analysis of temperature field in dry sliding wear test on pin-on-disc

Raghavendra, C. R.; Basavarajappa, S.; Sogalad, Irappa

doi:10.1007/s00231-018-2524-y

Cited by 7 publications

(2 citation statements)

References 22 publications

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“…The normal vacuum test was the control group (hereafter referred to as sample A). In addition, the generation of friction heat is related to the speed, load, and coefficient of friction [35]. Therefore, to more clearly analyze the effect of friction heat on the tribological properties of the H-DLC SSPBs, the test time was set to 20 h. The experiment parameters of the coated SSPBs are illustrated in Table 3.…”

Section: Coated Sspbs Preparationmentioning

confidence: 99%

Novel Tribometer for Coated Self-Lubricating Spherical Plain Bearings in a Vacuum

Zhang

Yong

et al. 2022

Lubricants

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Coated self-lubricating spherical plain bearings (SSPBs) are a fairly key component of the space-swing mechanism. To examine the operation status and tribological properties of coated SSPBs, a tribometer with a temperature control module in a vacuum condition was developed. The tribometer was mainly composed of a fixture system, reciprocating rotational motion system, environment control system, etc. First, the tribometer was verified with the self-made hydrogenated diamond-like carbon (H-DLC) SSPBs. The sensor signals indicated that the tribometer conformed to the design specifications. Then, the influence of friction heat on the tribological properties of H-DLC SSPBs was analyzed. The results showed that friction torque and temperature increased with the overall test time. Although the temperature had reached 48 °C, the frictional heat had little effect on the H-DLC SSPBs’ lifespans. The damage mechanism of H-DLC SSPBs was dominated by abrasive wear and fatigue wear in vacuum conditions.

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Section: Coated Sspbs Preparationmentioning

confidence: 99%

Novel Tribometer for Coated Self-Lubricating Spherical Plain Bearings in a Vacuum

Zhang

Yong

et al. 2022

Lubricants

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“…In addition, the wheel also affects the flow field near the brake disc, which affects the convective heat transfer coefficient of the brake disc (hc), thereby affecting the heat dissipation performance of the disc. The heat dissipation performance of the brake disc directly affects driving safety, and more than 85% of the heat dissipation of the brake disc is carried out by convection heat transfer [4]- [5] [6]. Therefore, in the wheel design, it's necessary to consider the influence of the change of wheel structure on the hc.…”

Section: Introductionmentioning

confidence: 99%

Study on Aerodynamic Performance and Lightweight Multiobjective Optimization Design of Wheel With Entropy Weighted Grey Relational Analysis Methods

et al. 2022

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In order to improve the aerodynamic performance and optimization efficiency while wheel lightweight designing, a multi-objective optimization design method of wheel lightweight based on entropy weighted grey relational analysis (EGRA) was proposed in this article. The aerodynamic analysis finite element model of the assembled wheel was established, and the simulation accuracy was verified by experiments. Study the distribution law of performance parameters such as pressure and turbulent kinetic energy in flow field of the car, analyze the variation law of flow field velocity and turbulent intensity in front and rear wheel cavities of the assembled wheel, and analyze the cloud diagram distribution of temperature and surface convective heat transfer coefficient of the brake disc (hc). Research on the influence of wheels with different disc structures on the aerodynamic drag coefficient of the car (Cd) and the hc. Combined with grey relational analysis (GRA) and EGRA, the objective evaluation of the comprehensive aerodynamic performance of wheels with different disc structures was given. With the design of experiments (DOEs), 12 important design variables were screened out by contribution analysis method. Using the approximate model method, combined with the RBF surrogate model, a hybrid method combining EGRA and Non-Dominated Sorting Genetic Algorithm-II (NSGA-II) was proposed to lightweight and multi-objective optimize the assembled wheel. Comparing and analyzing the optimization platform recommending scheme, the technique for ordering preferences by similarity to ideal solution (TOPSIS) method preferring scheme and the EGRA method optimum scheme, it was found that the optimal compromise scheme was obtained by the EGRA method, the reduction of the Cd was more obvious, and the improvement rates of performance were also more balanced. After multi-objective optimization, the mass of the assembled wheel was reduced by 10.83%, the Cd was reduced by 3.47%, and the average convective heat transfer coefficient of brake disc (ha) was reduced by 8.02%. The optimized assembled wheel has a weight reduction of 32.74% compared with the same type of cast aluminum alloy wheel, which has a remarkable lightweight effect and significant reduction on the Cd.

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Experimental and numerical investigations of wear behaviors of short-carbon-fiber reinforced polyetherimide composite

Zhang

Sun

Huang

et al. 2021

Composite Structures

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Analysis of temperature field in dry sliding wear test on pin-on-disc

Cited by 7 publications

References 22 publications

Novel Tribometer for Coated Self-Lubricating Spherical Plain Bearings in a Vacuum

Novel Tribometer for Coated Self-Lubricating Spherical Plain Bearings in a Vacuum

Study on Aerodynamic Performance and Lightweight Multiobjective Optimization Design of Wheel With Entropy Weighted Grey Relational Analysis Methods

Experimental and numerical investigations of wear behaviors of short-carbon-fiber reinforced polyetherimide composite

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