Investigation of structural and thermal analysis of clutch facings with different friction materials

Padmanabhan, S.; Kumar, T. Vinod; Kumar, Dhirendra; Velmurugan, Gowsikan; Kumar, B. Akshay; Subramanyam, K. Hitesh Sri

doi:10.1016/j.matpr.2023.03.757

Cited by 2 publications

(1 citation statement)

References 19 publications

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“…Meng et al [10] revealed the contact characteristics of a clutch friction pair at the initial stage of braking. Liu et al [11][12][13][14] investigated the effect of material parameters on the contact pressure distribution of clutches and proposed using the Pressure Distribution Index (PDI) to evaluate the pressure difference between a friction pair. Bao et al [15] analyzed the working principle and motion process of a wet clutch and established a dynamic engagement model of the spring, piston, friction pair, and pressure plate.…”

Section: Introductionmentioning

confidence: 99%

Research on Flexible Braking Control of a Crawler Crane during the Free-Fall Hook Process

Gao,

Song,

Yang

et al. 2024

Processes

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Due to the large inertia and strong impact accompanying the free-falling hook process of crawler cranes, it is difficult to meet the demand for flexible and smooth braking control under different weight load conditions. Therefore, this paper takes the free-fall hook system as the research object and combines system operation characteristics and control theory to carry out research on flexible braking control of the free-fall hook system. Firstly, a joint simulation platform of MATLAB (version 2018b) and AMESim (version 2019.1) software is built to theoretically analyze the key components of the free-fall hook system (proportional pressure-reducing valve, winch reducer, and wet clutch). Secondly, a mathematical model of the braking process is established, and the pressure control demand is clarified to analyze the reasons for the existence of dead zones and hysteresis loops in the system. Meanwhile, it is found that the dead zones and hysteresis loops existing in the pressure output of the pressure-reducing valve are the main factors of flexibility with load braking. Then, in this paper, a closed-loop control strategy is formulated based on the automatic adaptation of the braking gear in combination with the fuzzy PID pressure. Finally, the effectiveness of the control strategy proposed in this paper is verified with simulation and experimental testing using the pressure hysteresis loop of the free-fall hook process and the load-braking acceleration as the judging criteria. The results show that the system pressure hysteresis loop is reduced by 50%–60% and the maximum braking acceleration is reduced by 24%–30% under the conditions of 6.44 tonnes and 10.44 tonnes, which improves the accuracy of pressure control and achieves flexible and smooth braking with loads for different tonnages of free-fall hooks.

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Section: Introductionmentioning

confidence: 99%

Research on Flexible Braking Control of a Crawler Crane during the Free-Fall Hook Process

Gao,

Song,

Yang

et al. 2024

Processes

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Finite element analysis of the thermal and thermo-mechanical coupling problems in the dry friction clutches using functionally graded material

Jabbar,

Hussain,

Abdullah

et al. 2024

Curved and Layered Structures

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The friction clutch is an important machine part in the torque transmission system, where it is responsible for gently transmitting the power from the engine to the gearbox and damping the tensional vibration. At the beginning of the engagement between the clutch’s elements, a large amount of heat is released due to frictional sliding between the elements of the clutch system, generating very high temperatures. In this work, the two- and three-dimensional finite element models were developed from scratch to explore the clutch disk’s temperature and contact pressure behaviors using an alternative frictional material such as functionally graded material (FGM). The two assumptions for the thermal loads were considered: uniform wear and uniform pressure assumptions. The thermal–structural problem for the new frictional material was solved numerically and then presented as the temperature distributions and the contact pressure at any instant of sliding time. Also, a comparison was made between the clutch system behaviors when using FGM with different frictional materials. The results showed that the FGM has superior results to the other available frictional materials.

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Investigation of structural and thermal analysis of clutch facings with different friction materials

Cited by 2 publications

References 19 publications

Research on Flexible Braking Control of a Crawler Crane during the Free-Fall Hook Process

Research on Flexible Braking Control of a Crawler Crane during the Free-Fall Hook Process

Finite element analysis of the thermal and thermo-mechanical coupling problems in the dry friction clutches using functionally graded material

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