Non-linear analysis of a quarter-car model with stroke-dependent twin-tube shock absorber

Łuczko, Jan; Ferdek, Urszula

doi:10.1016/j.ymssp.2018.06.008

Cited by 26 publications

(26 citation statements)

References 31 publications

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“…The study of vibration isolation needs to study and establish the dynamic model of the system and then analyze and calculate the dynamic equation. Karadayi [1] first established the nonlinear vibration isolator model. On this basis, Venkatesa [2] proposed a method to optimize the system parameters.…”

Section: Introductionmentioning

confidence: 99%

Research on anti-flutter processing of aeroengine casing

Xiang

Xiao

2021

Electron Sci Technol Appl

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<p>Due to the thin and rigid wall of aeroengine casing, it is easy to reduce the machining accuracy due to the vibration of machine tools and cutting tools. Therefore, this paper designed an auxiliary fixture that can suppress such vibration.According to the vibration absorption principle of the tuned mass damper, this fixture is designed to transfer the vibration energy of the casing to the auxiliary fixture so as to reduce the vibration of the casing itself.According to Ansysworkbench analysis, this fixture can significantly reduce the vibration of the casing.The results show that the maximum vibration amplitude of the casing is reduced by 60%, and the average vibration amplitude is also significantly reduced.The auxiliary fixture has many advantages such as simple installation, simple disassembly and installation, strong expansibility and so on.</p>

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Section: Introductionmentioning

confidence: 99%

Research on anti-flutter processing of aeroengine casing

Xiang

Xiao

2021

Electron Sci Technol Appl

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“…The damping force output is the most important performance parameter of twin-tube HAD [25,26]. However, the damping output hysteresis in the damper is the main reason affecting the instability of its performance.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear Modeling and Experimental Characterization of Twin-Tube Hydraulic Adjustable Damper: Effects of Cavitation On Hysteretic Behavior

Zhang

Wang

Yang

2021

Preprint

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The hydraulic adjustable damper has attracted wide attention due to its superiorities of low energy consumption, fast response, strong durability, high reliability and simple structure. However, there has been no published detailed analysis about the effects of cavitation on the hysteresis of the hydraulic damper damping output. Furthermore, the existing damper models with simplified assumptions for the cavitation have not been completely studied. Therefore, a nonlinear model of twin-tube hydraulic adjustable dampers ( twin-tube HAD ) is proposed with an emphasis on the cavitation properties. Polytropic change in the gas content, seal friction, oil viscosity and the gas-oil emulsion flowing through orifices or valves are taken into consideration in the model. The cavitation form of twin-tube HAD valve is studied in depth and the dynamic cavitation number of hydraulic oil is formulated as a function of the gas volume fraction, then the damping force is characterized by the gas volume fraction. The model proposed in this paper can be used for accurately analytical investigation and it is useful in reducing damage from cavitation in similar nonlinear equipment. The mathematical model is validated by comparison against experimental results carried out on HONDA-EG8-RH twin-tube HAD in damper test facilities .

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Section: Introductionmentioning

confidence: 99%

“…A series of other shock absorbers with innovative constructions [6][7][8] may also be classified within the group of hydraulic dampers with a variable characteristic of the damping force. One of them is a twin-tube hydraulic shock absorber with an additional inner cylinder presented in the paper [6]. The characteristic of the damping force depends on the amplitude of excitation since the flow of oil between the chambers of the main and the inner cylinder is controlled by the displacement of the auxiliary piston.…”

Section: Introductionmentioning

confidence: 99%

Nonlinear dynamics of a vehicle with a displacement-sensitive mono-tube shock absorber

Łuczko

2020

Nonlinear Dyn

Self Cite

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The paper presents a new concept of absorbing car body vibrations, which consists in a modification of the construction of the classical mono-tube hydraulic shock absorber by the introduction of an additional inner cylinder with an auxiliary piston. By making an appropriate selection of the system parameters, one may obtain the damping force characteristics dependent on the excitation amplitude and frequency. In the case of driving on a good-quality road surface, the shock absorber displays the soft characteristics which are desired as far as the driving comfort is concerned. In the case of worse-quality roads or while overcoming large obstacles, the hard characteristics ensure a higher level of safety and protect the shock absorber from getting damaged. The developed nonlinear model makes it possible to effectively analyse the system responses to harmonic, impulse and random excitations. On the basis of the analysis of the impact of harmonic excitations on the driving comfort and safety indexes, one may estimate the optimal values of the shock absorber construction parameters. Impulse and random excitations are applied in order to finally verify the effectiveness of the operation of the proposed shock absorber.

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Non-linear analysis of a quarter-car model with stroke-dependent twin-tube shock absorber

Cited by 26 publications

References 31 publications

Research on anti-flutter processing of aeroengine casing

Research on anti-flutter processing of aeroengine casing

Nonlinear Modeling and Experimental Characterization of Twin-Tube Hydraulic Adjustable Damper: Effects of Cavitation On Hysteretic Behavior

Nonlinear dynamics of a vehicle with a displacement-sensitive mono-tube shock absorber

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