Modeling and analysis of wet friction clutch engagement dynamics

Iqbal, Shoaib; Al‐Bender, Farid; Ompusunggu, Agusmian Partogi; Pluymers, Bert; Desmet, Wim

doi:10.1016/j.ymssp.2014.12.024

Cited by 68 publications

(37 citation statements)

References 10 publications

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“…This is called the filling phase, which ends once the piston advances far enough and presses the plates together such that torque transfer commences. At this moment, the slip phase begins and the system dynamics considerably change, yielding strongly nonlinear system behavior [12,13]. The difference in the rotation speed between the input and the output shafts, denoted as the slip, then decreases until both shafts rotate synchronously.…”

Section: Wet-clutch Experiments and Modelmentioning

confidence: 99%

Parametric Uncertainty Quantification Using Polynomial Chaos Expansions Applied to a Wet Friction Clutch Model

Tod¹,

Groote²,

Lefebvre³

et al. 2019

IJMO

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Recently, designing mechatronic systems has become more and more dependent on models that are used to predict performance in a virtual environment, and the models involved are becoming increasingly more complex multiphysical systems. Instead of spending much time modeling increasingly detailed physical models, uncertainties can be explicitly considered to model the lack of knowledge. The mismatch between real-life experiments and model simulations due to parametric uncertainties can be quantified using likelihood estimation and Monte Carlo sampling techniques for propagation. In this paper, we attempt to significantly accelerate the process using polynomial chaos expansions for propagation and a genetic algorithm to maximize likelihood. The soundness of this approach is demonstrated on a wet friction clutch system. The results show that the method has a strong potential for scalability with respect to the number of uncertain parameters.

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Section: Wet-clutch Experiments and Modelmentioning

confidence: 99%

Parametric Uncertainty Quantification Using Polynomial Chaos Expansions Applied to a Wet Friction Clutch Model

Tod¹,

Groote²,

Lefebvre³

et al. 2019

IJMO

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show abstract

“…Knowledge of mechanical characteristics plays a significant role in modelling [12,13]. While the results of analyzes based on linear models are predictable and easy to interpret they are relevant for small amplitude oscillations.…”

Section: Introductionmentioning

confidence: 99%

Study of flexible couplings non-linear dynamics using bond graphs

Margielewicz

Opasiak

Gąska

et al. 2019

Forsch Ingenieurwes

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The aim of this work is to model the dynamics of flexible couplings. On the basis of a non-linear mathematical model solved by bond graph, the ranges of excitation frequency were determined, in which the movement of the couplings is chaotic. For three couplings, the 3D distributions of the largest Lyapunov exponent and correlation dimension diagram (CDD) were plotted. The proposed diagram (CDD) illustrates how the geometric structure of the attractor changes when the conditions of excitation change. The classic Poincare cross-section, completed by us with the density of points distribution, significantly enhances information about geometrical structures of strange attractors. It has been shown that in relation to large ranges of changes in the control parameter, the geometric structure of the strange attractor is stretched and curved. The areas with the highest densification of the Poincaré cross section are most often located in places where the chaotic attractor is curved. Untersuchung der nichtlinearen Dynamik flexibler Kopplungen mit Hilfe von Bondgraphen ZusammenfassungZiel dieser Arbeit ist es, die Dynamik von elastischen Kupplungen zu modellieren. Anhand eines durch einen Bindungsgraphen gelösten nichtlinearen mathematischen Modells wurden die Bereiche der Anregungsfrequenz bestimmt, in denen die Bewegung der Kopplungen chaotisch ist. Für drei Kopplungen wurden die 3D-Verteilungen des größten Lyapunov-Exponenten und das Korrelationsdimensionsdiagramm (CDD) aufgezeichnet. Das vorgeschlagene Diagramm (CDD) zeigt, wie sich die geometrische Struktur des Attraktors ändert, wenn sich die Anregungsbedingungen ändern. Der von uns vervollständigte klassische Poincaré-Querschnitt mit der Dichte der Punkteverteilung verbessert die Informationen über geometrische Strukturen fremder Attraktoren erheblich. Es hat sich gezeigt, dass in Bezug auf große Änderungsbereiche der Steuerparameter die geometrische Struktur des seltsamen Attraktors gedehnt und gebogen wird. Die Bereiche mit der höchsten Verdichtung des Poincaré-Querschnitts befinden sich am häufigsten an Stellen, an denen der chaotische Attraktor gekrümmt ist.

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“…However, the operating conditions in wet clutches are complex and unstable. Gao et al [1], Deur et al [2], Ompusunggu et al [3], and Iqbal et al [4] proposed numerical models and tests to investigate the engagement of wet clutches. At the initial stage of engagement, friction plates are separated from the mating discs and rotate with a high relative speed.…”

Section: Introductionmentioning

confidence: 99%

Study on the High Temperature Friction and Wear Behaviors of Cu-Based Friction Pairs in Wet Clutches by Pin-on-Disc Tests

Zhao

2017

Advances in Materials Science and Engineering

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This work is devoted to the study of the high temperature friction and wear behaviors of Cu-based friction pairs in wet clutches under different temperatures, rotation speeds, and loads. Pin-on-disc tests are carried out on the UMT-3. The friction coefficient, wear factor, and high temperature wear mechanism are primarily analyzed. The results show that as the temperature rises from 120 ∘ C to 420 ∘ C, the friction coefficient increases from 0.28 to 0.35 at first and then decreases to 0.30, when the vibration of friction coefficient is significantly identified. Meanwhile, the wear factor grows gradually from = 7.9×10 −8 g/Nm to = 41.8×10 −8 g/Nm at first and then grows sharply to = 112.2 × 10 −8 g/Nm. The main wear mechanisms are abrasive wear and ploughing wear when the temperature is below 345 ∘ C, and the wear seriously deteriorates when the temperature exceeds 345 ∘ C, when the wear mechanism changes to adhesive wear and delamination wear.

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Modeling and analysis of wet friction clutch engagement dynamics

Cited by 68 publications

References 10 publications

Parametric Uncertainty Quantification Using Polynomial Chaos Expansions Applied to a Wet Friction Clutch Model

Parametric Uncertainty Quantification Using Polynomial Chaos Expansions Applied to a Wet Friction Clutch Model

Study of flexible couplings non-linear dynamics using bond graphs

Study on the High Temperature Friction and Wear Behaviors of Cu-Based Friction Pairs in Wet Clutches by Pin-on-Disc Tests

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