The dynamic wedging and friction characteristics of one-way clutch under transient loads from stator

Ke, Zhifang; Wei, Wei; Liu, Cheng; Guo, Meng; Yan, Qingdong

doi:10.1016/j.triboint.2020.106568

Cited by 11 publications

(6 citation statements)

References 12 publications

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“…The load distribution results of the original model are presented as r vt,LET E = 4.05 3.85 0.56 0.66 m 2 /s. By analyzing the pulsation characteristics of the load distribution 46 , it reveals that the load fluctuation had an upper limit of 30% and a lower limit of -6% 43,47 , thus, the upper and lower limits of the design factors in the DOE were determined, and the load distribution was subsequently designed as depicted in Fig. 5: Subsequently, the corresponding response results were obtained from the numerical calculation using the validation platform.…”

Section: Doe Optimalization Case Study Based On Driven Bldmentioning

confidence: 99%

Optimization for Turbomachinery Performance Using Inverse Design Method: Integrating Cascade System and Flow Characteristics

Ke,

Wei,

Guo

et al. 2024

Preprint

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Conventional optimization approaches for torque converters often rely on iterative trial-and-error methods, resulting in inherent limitations and uncertainties. To address these challenges and achieve performance optimization based on flow characteristics, this study proposes an inverse design method for turbomachinery. Introducing a novel index for blade loads, denoted as rvt , enables simultaneous optimization for both the cascade system and the flow field. Furthermore, a pump’s driven loads are introduced for the directional design of the blade load characteristics of high-capacity torque converters. Building upon the inverse design method, a directional optimization strategy is developed to enhance the pump capacity or torque ratio, guided by the concept of driven loads. The inverse design method allows for the targeted design of blade shapes while ensuring optimal blade shape and flow field distribution. The design results and the prototype demonstrate a significant 8.28% increase in pump capacity and a notable 4.9% reduction in the magnitude of blade loads in the internal flow field. These findings confirm the efficacy of the inverse design method in achieving directional enhancement of pump capacity while optimizing the smoothness of the internal flow field.

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Section: Doe Optimalization Case Study Based On Driven Bldmentioning

confidence: 99%

Optimization for Turbomachinery Performance Using Inverse Design Method: Integrating Cascade System and Flow Characteristics

Ke,

Wei,

Guo

et al. 2024

Preprint

Self Cite

View full text Add to dashboard Cite

show abstract

“…A one-way clutch is a type of passive mechanical clutch that is restricted by its structural properties to only spinning in one direction [ 26 , 27 ]. Modeling the one-way clutch as a nonlinear spring with discontinuous stiffness, zero stiffness in the disengaged state and finite linear stiffness in the engaged state.…”

Section: Compound Dynamic Model For Tsdc Transmissionmentioning

confidence: 99%

Study on nonlinear dynamics characteristics of dual speed dual clutch transmission system based on bond graph

Wu,

Yan,

Liu

et al. 2023

Heliyon

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“…A one-way clutch is a mechanical clutch that is mainly composed of an inner ring, a circular array wedge, an outer ring, and a spring. Its structural characteristics prevent it from rotating in one direction, whereas the resistance when rotating in the other direction is negligible [27,28]. To simplify the modeling process, the one-way clutch in the present study was modeled as a nonlinear spring with discontinuous stiffness.…”

Section: The One-way Clutch Modelmentioning

confidence: 99%

“…On expressing the abovementioned differential Equation ( 27) with state space equations for matrices and vectors, we obtain: . X = AX + BU (28) Here, A is a seven-order matrix containing all the coefficients of the state variable on the right-hand side of Equation ( 27). B is the matrix comprising the coefficients of the input variable on the right-hand side of Equation (27).…”

Section: Uncbg Model Of a Double-row Double Planetary Gearboxmentioning

confidence: 99%

Bond Graph-Based Approach to Modeling Variable-Speed Gearboxes with Multi-Type Clutches

Yan

Liu

et al. 2022

Applied Sciences

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The modeling and simulation of gearboxes is important for analyzing the dynamic characteristics and designing control strategies of transmission systems. Variable-speed gearboxes include compound planetary gear trains and clutches, which complicates dynamic modeling. Here, a procedural bond graph-based modeling method that considers many uncertainties is proposed. The proposed method yields a constant system–structure model. First, bond graph models of the two most common planetary gears were summarized, and were used as sub-models of a compound planetary gear train. Then, the Karnopp friction sub-model of the friction clutch and a relative angular displacement sub-model of the one-way clutch were constructed. Based on the dynamic coupling between the sub-models, the modeling steps of the gearbox, including the compound planetary gear train friction clutch one-way clutch coupling system, are described in detail. Next, the main sources of uncertainties of gearbox were analyzed and the simulation methods were given. Finally, the novel uncertain bond graph model was used to simulate the double planetary gearbox; the transmission ratio before and after the shift was 2.42 and 1.72, compared with the design values of 2.41 and 1.71, respectively; the deviation is within 5.8%; The average rotating speeds of the output shaft fluctuated by 6 and 2.5% respectively, which was within a reasonable range, so the effectiveness of the method is verified.

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The dynamic wedging and friction characteristics of one-way clutch under transient loads from stator

Cited by 11 publications

References 12 publications

Optimization for Turbomachinery Performance Using Inverse Design Method: Integrating Cascade System and Flow Characteristics

Optimization for Turbomachinery Performance Using Inverse Design Method: Integrating Cascade System and Flow Characteristics

Study on nonlinear dynamics characteristics of dual speed dual clutch transmission system based on bond graph

Bond Graph-Based Approach to Modeling Variable-Speed Gearboxes with Multi-Type Clutches

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