Fluid structure interaction for circulation valve of hydraulic shock absorber

Chen, Qiping; Shu, Hongyu; Wen-qiang, Fang; He, Liange; Yang, Mao-ju

doi:10.1007/s11771-013-1531-x

Cited by 12 publications

(4 citation statements)

References 7 publications

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“…Such elements include, for example, shock absorbers. A large number of works related to the research of shock absorbers are devoted to the development of mathematical models (Domnyshev et al, 2019;Hou et al, 2011;Mollica and Youcef-Toumi, 1997;Ramos et al, 2005), parameter optimization and structural modernization (Ankitha and Rupa Sri, 2021;Czop et al, 2012;Duym, 2000;Więckowski et al, 2018;Wszołek, 2016), as well as research using CFD and FEM analysis (Chen et al, 2013;Duym, 2000;Herr et al, 1999;Lee, 1997;Shams et al, 2007). It should be noted that a significantly smaller number of works are devoted to the study of the operation of components and assemblies of cars (including shock absorbers) during operation in cold climates (Chernukhin, 2013;Chernukhin et al, 2020;Dolgushin et al, 2019), although this is an actual scientific direction for many regions of the world.…”

Section: Introductionmentioning

confidence: 99%

Modeling of Thermal Preparation of Shock Absorbers of Trucks

Chernukhin

2022

Period. Polytech. Transp. Eng.

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The use of modern materials and technical fluids allows you to operate cars at negative temperatures, but in some regions of the world (for example, in Siberia), the ambient air temperature can fall below 243 K for several weeks or even months. The operation of trucks at such a temperature refers to extreme conditions that force the special preparation of equipment. This preparation consists not only of special maintenance, but also of carrying out some activities that are carried out immediately before starting the engine and driving. The essence of these measures is, among other things, the thermal preparation of the components and assemblies of the vehicle before departure.This work is devoted to the thermal preparation of truck shock absorbers. It is revealed that the use of oils, the kinematic viscosity of which significantly depends on the ambient temperature, is a limiting factor in the winter operation of shock absorbers. The simulation of the operation of electric flexible heaters for shock absorbers in the SolidWorks Flow Simulation environment was carried out and the preheating efficiency was evaluated. It is established that the temperature distribution of the shock absorber fluid during heating of two-pipe shock absorbers occurs unevenly, but despite this, preheating significantly improves the characteristics of shock absorbers and contributes to the safe and long-lasting operation of trucks.

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Section: Introductionmentioning

confidence: 99%

Modeling of Thermal Preparation of Shock Absorbers of Trucks

Chernukhin

2022

Period. Polytech. Transp. Eng.

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“…Yang et al (2011) studied the flow characteristics of cone valves with sharp-edge seats. Posa et al (2013), Lisowski and Rajda (2013) and Chen et al (2013) analyzed valve performance using numerical methods that stand as a reference for such studies. Yuan et al (2014) and Sun et al (2015aSun et al ( , 2015b studied the effect of throttle groove on cavitation.…”

Section: Introductionmentioning

confidence: 99%

Flow characteristics of a hydraulic cone-throttle valve during cavitation

Zhang

2019

ILT

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Purpose This paper aims to resolve the cavitation problem encountered in cone throttle valves concerning fluid flow performance and pitting from cavitation luminescence, the author studied the flow field within a cone throttle valve set with various valve openings, inlet pressures and outlet back pressures. Design/methodology/approach The flow and cavitation distribution in the valve under different pressure conditions were obtained in simulations. To confirm these results experimentally, a hydraulic cavitation platform was constructed. The valve was made of polymethyl methacrylate material with high transparency to observe the cavitation directly, as well as cavitation luminescence. The flow characteristics of this valve were measured under various working conditions. Findings With increasing cavitation strength, a reduction in cavitation on the throttle capacity was more evident. Increasing the back pressure and reducing the working pressure of the valve appropriately improves the flow capacity of the valve, which subsequently improves the performance of the valve. The cavitation luminescence is also linearly related to cavitation intensity. That is, the stronger the flow capacity of the valve, the less likely the luminescence is produced. Moreover, a stronger luminescence intensity worsens the flow performance of the valve. Research limitations/implications Owing to the limitation of experimental means and lack of research on bubble shape, the subsequent research will complement this aspect. Practical implications With a view to providing theoretical and experimental support, cavitation luminescence is also studied to gain a deeper understanding of the cavitation mechanism in hydraulic valves. Originality/value The innovation of this paper is to study the cavitation luminescence in the hydraulic system.

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“…Although various control methods, such as an adaptive robust controller, adaptive cascade control and terminal sliding mode (TSM) control, have been used to control hydraulic manipulators, exact nominal models are required. [8][9][10][11] However, it is difficult to establish an exact model for hydraulic manipulators. Therefore, controller designs remain a challenge in the field of engineering control for hydraulic manipulator systems with nonlinearities and uncertainties.…”

Section: Introductionmentioning

confidence: 99%

Robust position control of hydraulic manipulators using time delay estimation and nonsingular fast terminal sliding mode

Liang

Wan

Zhang

et al. 2017

Proceedings of the Institution of Mechanical Engineers, Part I:

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A simple and robust tracking controller based on time delay estimation and nonsingular fast terminal sliding mode is proposed for the position control of hydraulic manipulator. The proposed controller does not require the mathematical model of hydraulic manipulator dynamics, which ensures that the method is simple and model free. Two elements, time delay estimation and nonsingular fast terminal sliding mode, are implemented in the proposed controller. Time delay estimation estimates the complex dynamics of the hydraulic manipulator, and nonsingular fast terminal sliding mode is implemented as the nonlinear desired error dynamic to ensure fast convergence and high trajectory tracking accuracy. Experiments are performed to verify the tracking performance of the method on a hydraulic manipulator. The results demonstrate that this method achieves faster and higher precision position tracking performance than a conventional time delay control with linear error dynamics.

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Fluid structure interaction for circulation valve of hydraulic shock absorber

Cited by 12 publications

References 7 publications

Modeling of Thermal Preparation of Shock Absorbers of Trucks

Modeling of Thermal Preparation of Shock Absorbers of Trucks

Flow characteristics of a hydraulic cone-throttle valve during cavitation

Robust position control of hydraulic manipulators using time delay estimation and nonsingular fast terminal sliding mode

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