Design and analysis of logarithmic spiral type sprag one-way clutch

Liu, Zhihui; Yan, Hongjie; Cao, Yuming

doi:10.1007/s11771-015-3010-z

Cited by 10 publications

(11 citation statements)

References 8 publications

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“…By simplifying the input end, including the driving side of the overrunning clutch; the input gear, including the driven side of the clutch; and the output combination to the inertial components, and simplifying the engagement of the clutch and gears to the elastic damping elements without inertia, the motion differential equation is derived as Eq. (7). ( ) is the nonlinear function of the gear side clearance while engaging.…”

Section: Dynamic Model Of Overrunning Clutch-single Gear Pair Systemmentioning

confidence: 99%

“…( ) is the nonlinear function of the gear side clearance while engaging. ( ) is the time-varying meshing stiffness based on the multilevel fitting stiffness model proposed in the literature [7]. The definitions of the damping coefficient and the non-linear function of the gear side clearance are also described in the literature [7]:…”

Section: Dynamic Model Of Overrunning Clutch-single Gear Pair Systemmentioning

confidence: 99%

“…From the four overrunning clutch models shown in Eqs. (1), (2), (4) and (6), and the dynamic model of the overrunning clutch-single gear pair system shown in (7). The simulation models of rotational speed discrepancy model with angle compensation and rotational angle discrepancy model with angle compensation were established in Simulink as shown in Fig.…”

Section: Simulation Model Establishmentmentioning

confidence: 99%

“…For example, it can be used on vehicles to realize the separate functions of the engine and starter [1], torque converters to restrict the one-way guide rotation [2] and driving systems for front-end accessories of the engine to realize a shock-absorbing function [3,4]. Research on overrunning clutches has mainly concentrated on the mechanism design and reliability analysis corresponding to the application environment [5][6][7], analysis of contact stress, fatigue life and overload capacity [8][9][10], and dynamic characteristic of the overrunning clutch [11][12][13][14] and its transmission system. Depending on the modeling method, the dynamic models of the overrunning clutch are divided into physical models and mathematical models based on the finite element software or multi-body dynamics software.…”

mentioning

confidence: 99%

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Simulation and experimental research on dynamic characteristics of overrunning clutch

Liu¹,

Lin²,

Zhao³

2019

J. vibroeng.

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Because of the self-locking part inertia, deformation factors, and interspace between the driving and driven sides of the overrunning clutch, the existing dynamic models, which consider the rotational speed discrepancy or angle discrepancy as the only determinant to recognize the engaging state, have some difficulty in accurately describing and studying the dynamic characteristics of the overrunning clutch and its transmission system. In order to solve these problems, this paper proposed a modified method considering the influence of the dynamic characteristics of self-locking components through angle compensation. Four models were established on a MATLAB/Simulink platform, and an experiment was carried out on a transmission experimental platform under a stable driving torque and varying driving torque. Then, the comparison of the dynamic characteristic between the simulation and the experiment showed that under non-stationary excitation, taking the influence of the dynamic characteristic of the self-locking components into account through angle compensation can help to more accurately describe the dynamic characteristics of a transmission system with an overrunning clutch. Keywords: overrunning clutch, transmission system, nonlinear, dynamic model. , , , Rotational inertias of input end, input gear, output gear, and output end in overrunning clutch-single gear pair system , , Rotational angles of input end, input gear, and output gear in overrunning clutch-single gear pair system , Basic circle radiuses of input gear and output gear , , Rotational angles of input end, input gear and output gear in Simulink models , , Rotational speeds of input end, input gear and output gear in Simulink models

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Section: Dynamic Model Of Overrunning Clutch-single Gear Pair Systemmentioning

confidence: 99%

Section: Dynamic Model Of Overrunning Clutch-single Gear Pair Systemmentioning

confidence: 99%

Section: Simulation Model Establishmentmentioning

confidence: 99%

mentioning

confidence: 99%

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Simulation and experimental research on dynamic characteristics of overrunning clutch

Liu¹,

Lin²,

Zhao³

2019

J. vibroeng.

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“…Keywords: one-way clutch, full-scale experiment, radial deformation, outer shell, machine drive В приводах многих машин находят применение механизмы свободного хода, имеющие различные конструктивные схемы: с цилиндрическими и эксцентриковыми роликами [1][2][3][4][5][6][7], храповые и микрохраповые [8], пружинные [1], релейные [9], клиновые [8] и др. Использование таких механизмов позволяет упростить кинематику и повысить функциональные возможности машин [7,[10][11][12].…”

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Experimental Research of Radial Deformation of the Outer Shell of Roller One-Way Clutches

Zolotov¹,

университет²,

Sharkov³

et al. 2018

PoHEI.MB

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Роликовые механизмы свободного хода получили наибольшее применение в приводах современной техники. При передаче нагрузки на внешнюю обойму такого механизма действуют большие нормальные силы, что вызывает ее значительную радиальную деформацию. Обычно радиальную деформацию внешней обоймы не рассчитывают, а геометрические параметры задают по конструктивным рекомендациям. Теоретические и экспериментальные исследования жесткости внешней обоймы также не проводят. Приведены результаты натурного эксперимента по исследованию влияния передаваемой нагрузки (вращающего момента) и конструктивных параметров роликового механизма свободного хода (угла заклинивания и числа заклинивающихся роликов) на радиальную деформацию внешней обоймы. Экспериментально подтверждена корректность предложенной эмпирической зависимости для расчета радиальной деформации внешней обоймы. Расхождение между экспериментальными и теоретическими значениями радиальной деформации для большей части опытов составило 2,9…17,5 %. Экспериментально установлено: рост радиальной деформации при повышении нагрузки незначительно замедляется и изменяется по степенной зависимости; увеличение угла заклинивания с 5 до 9° приводит к снижению радиальной деформации в 1,28-1,51 раза, а уменьшение числа роликов с 3 до 5 -в 1,5-1,7 раза.Ключевые слова: механизм свободного хода, натурный эксперимент, радиальная деформация, внешняя обойма, приводы машин Roller one-way clutches have been widely used in drives of modern technical equipment. When a load is transferred to the outer shell of such mechanisms, large normal forces act on the outer shell, causing considerable radial deformation. Usually, the radial deformation of the outer shell is not calculated, and geometrical parameters are set based on design recommendations. Theoretical and experimental studies of the outer shell stiffness are not performed either. The article presents the results of a full-scale experiment to study the effects of the transferred load (torque) and the design parameters of the roller one-way clutch (wedging angle and number of wedging rollers) on the radial deformation of the outer shell. The validity of the proposed empirical relationship for calculating the radial deformation of the outer shell is confirmed experimentally. The discrepancy between the experimental and the theoretical values of radial deformations for most experiments is from

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Experimental investigation of fatigue for one way power transmission clutches using accelerated life tests

Dutt,

Joshi,

Shah

et al. 2024

Results in Engineering

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Design and analysis of logarithmic spiral type sprag one-way clutch

Cited by 10 publications

References 8 publications

Simulation and experimental research on dynamic characteristics of overrunning clutch

Simulation and experimental research on dynamic characteristics of overrunning clutch

Experimental Research of Radial Deformation of the Outer Shell of Roller One-Way Clutches

Experimental investigation of fatigue for one way power transmission clutches using accelerated life tests

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