Simulation model of multiple plate friction clutches and brakes

Grkić, Aleksandar; Duboka, Cedomir; Muzdeka, Slavko

doi:10.5937/vojtehg0901065g

Cited by 2 publications

(2 citation statements)

References 0 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…The improvement of the gearbox is of particular importance because, depending on its performance, the traction and maneuvering characteristics of the vehicle can be significantly increased or decreased, and the steering system has a special place in this (Grkić et al, 2009). The hydraulic buffering valve is one of the most important elements of the power-shift transmission system.…”

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of hydraulic buffering valve for power-shift transmission

Drakulić¹,

Đurić²,

Ponorac³

et al. 2023

Vojnotehnički glasnik

View full text Add to dashboard Cite

Introduction/purpose: The hydraulic buffering valve has the greatest influence on the dynamic characteristics of power-shift transmission. The hydraulic buffering valve is a transmission element that controls increase in pressure in friction assemblies during the gear shifting process. By choosing the optimal control of pressure increase during shifting, reduction of dynamic loads in gear transmissions and thermal loads in friction assemblies is achieved. Methods: The paper analyzes the principle of one of hydraulic buffering valve solutions as well as the influence of certain parameters on the control of pressure increase. After the analysis of the working principle of the hydraulic buffering valve, a simulation model was developed in the MATLAB/Simulink software package. Results: The results obtained using the simulation model were compared with the experimental results of the selected pressure modulator solution. The selected hydraulic buffering valve was developed as part of the development of a device for power-shift transmission. The simulation results showed a satisfactory match with the experimental results. Conclusion: The developed simulation model enables a relatively easy and quick change of the parameters of the hydraulic buffering valve as well as a possibility of a faster and better understanding of the influence of individual parameters on pressure increase during the gear shifting process.

show abstract

Section: Introductionmentioning

confidence: 99%

Modeling and simulation of hydraulic buffering valve for power-shift transmission

Drakulić¹,

Đurić²,

Ponorac³

et al. 2023

Vojnotehnički glasnik

View full text Add to dashboard Cite

show abstract

“…Although this kind of system is widely used, the nonlinear characteristics of friction clutch-planetary gear system are rarely studied. Aleksandar 19 established a simulation model of friction clutch and planetary gear train, and conducted a simulation analysis on the transition process of planetary gear train in the shift process. Michel Bauer 20 established a friction clutch-planetary gear train model suitable for hybrid power and conducted a simulation study on its shifting characteristics.…”

mentioning

confidence: 99%

Research on nonlinear dynamic characteristics of high-speed gear in two-speed transmission system

Tan,

Wu,

Liu

et al. 2023

Sci Rep

View full text Add to dashboard Cite

The working performance and service life of the two-speed transmission system directly affects the performance and service life of helicopters and other equipment. One of the main tasks of the two-speed transmission system research is to improve its dynamic characteristics. For the two-speed transmission system in high-speed gear, a purely torsional nonlinear dynamic differential equation set considering the number of planetary gears, backlash, and clutch dynamic load is established by using the lumped parameter method, and the equations are dimensionless. Then the dimensionless differential equation set is solved by using the variable step-size fourth-order Runge–Kutta method, and the phase diagram and Poincare diagram of high-speed gear are obtained. By changing the dynamic friction coefficient of the friction clutch and the backlash of the gear pair, the influence of parameter change on the nonlinear dynamic characteristics of the system is analyzed. The results show that, with the increase of excitation frequency, the system has experienced single cycle, quasi-cycle, chaos, and double cycle, then changed from double cycle to chaotic motion, and then changed from chaotic motion to double cycle and single cycle motion in turn, and found the path to chaos. In the low-frequency band, reducing the friction coefficient of the friction clutch can reduce vibration amplitude; In the middle-frequency band, reducing the friction coefficient will make the system tend to unstable vibration. In the high-frequency band, it is a single-cycle movement, which is not affected by friction coefficient.

show abstract

Simulation model of multiple plate friction clutches and brakes

Cited by 2 publications

References 0 publications

Modeling and simulation of hydraulic buffering valve for power-shift transmission

Modeling and simulation of hydraulic buffering valve for power-shift transmission

Research on nonlinear dynamic characteristics of high-speed gear in two-speed transmission system

Contact Info

Product

Resources

About