Stiffness Characteristics Analysis of Interconnected Hydro-Pneumatic Suspension for Heavy Multi-Axle Vehicles

Wang, Xu; Gao, Gao; Liu, Zhihao; Feng, Jiangtao

doi:10.2991/mecae-18.2018.5

Cited by 3 publications

(3 citation statements)

References 2 publications

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“…Wang Xu et al utilized a mathematical model of a hydraulic system for interconnected oil-gas suspension to compare the stiffness and damping properties between interconnected and independent suspension, considering both vertical and roll conditions. Additionally, they conducted a parametric analysis to examine the damping characteristics of the interconnected suspension [15]. Liu Qihang investigated the output characteristics of interconnected suspension across various parameters and analyzed the evolving trends of body vibration characteristics.…”

Section: Introductionmentioning

confidence: 99%

Research on Damping Hole Optimization of Hydro-Pneumatic Suspension for Mining Trucks under Variable Load Conditions

Zhu,

Zhao,

Zhou

et al. 2024

Actuators

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The hydro-pneumatic suspension, known for enhancing vehicle ride comfort and stability, finds widespread use in engineering vehicles. Presently, the majority of mining trucks employ hydro-pneumatic suspension with a fixed damping hole, underscoring the critical importance of selecting appropriate damping hole parameters. Initially, an equilibrium mathematical model of the ¼ hydro-pneumatic suspension is established, and the influencing factors of the damping characteristics are analyzed. Subsequently, the simulation model and experimental bench for the hydro-pneumatic suspension are constructed. Sinusoidal signals with different frequencies and amplitudes serve as the excitation signals to analyze the variation trend of the force on the rod with displacement changes. The simulation and experimental results demonstrate a high degree of consistency, validating the rationality and validity of the simulation model. Building upon this foundation, various damping apertures are then selected to study the damping characteristics of the hydro-pneumatic suspension. The research indicates that as the damping aperture increases, the setting time of the hydro-pneumatic suspension system after excitation extends, accompanied by a decrease in the acceleration overshoot. As a result, a comprehensive evaluation index is developed, considering various factors, such as different weight setting times and peak longitudinal accelerations to assess the ride comfort of the suspension. This approach is then employed to determine the optimal damping aperture under both full-load and no-load conditions. The findings of this research offer valuable insights for the development of adaptive variable damping hydraulic suspensions, especially under variable load conditions.

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Section: Introductionmentioning

confidence: 99%

Research on Damping Hole Optimization of Hydro-Pneumatic Suspension for Mining Trucks under Variable Load Conditions

Zhu,

Zhao,

Zhou

et al. 2024

Actuators

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show abstract

“…Compared to single-chamber suspensions, dualchamber suspensions have better stiffness in the extension stroke. 2 Many scholars in the industry have done a lot of work on the nonlinear characteristics and modeling of hydro-pneumatic suspensions, [3][4][5] and the strong nonlinearity of the elastic element of hydropneumatic suspensions, the use of fractional order is more revealing of the essential characteristics and behavior, and more accurately describes the dynamics of hydro-pneumatic suspensions. And the domestic heavy vehicle overload phenomenon is more common more shorten the service life of the road, poor road friendliness.…”

Section: Introductionmentioning

confidence: 99%

Modeling of hydro-pneumatic suspension system with fractional order terms and simulation analysis of road friendliness

Wang

Cheng

et al. 2022

Proceedings of the Institution of Mechanical Engineers, Part D:

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To establish the hydro-pneumatic suspension model more accurately and better analyze the influence of heavy vehicle hydro-pneumatic suspension system on road friendliness, the fractional order theory is applied to modeling, and the mathematical model and dynamics model of dual-chamber hydro-pneumatic suspension with fractional order are established by using Matlab/Simulink, and the fractional order differential term of the suspension system is calculated according to the improved Oustaloup filter. The effect of fractional order on suspension stiffness, damping and output forces is also investigated. The optimal fractional order is determined to be 0.9 for the design of a combined suspension performance index function. The vibration law of increasing amplitude and error of fractional-order is obtained through simulation, and the model with fractional-order is described more accurately. A sliding film variable structure controller was established for control. The simulation results were analyzed by means of theoretical road damage factors and dynamic load factors. The results show that the suspension system model with fractional order terms can effectively reduce the dynamic tire load and improve the suspension smoothness and road friendliness.

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“…Many scholars have investigated the influence of HPS parameters and coupling forms on vehicle ride comfort and stability, based on multi-DOF models of two-axle or four-axle vehicles. 10–16 Wang et al 17 discussed the relationship between interconnected modes of HPS and handling stability, riding comfort for a three-axle vehicle.…”

Section: Introductionmentioning

confidence: 99%

Modelling and characteristics of hybrid coupling hydro-pneumatic suspension for a seven-axle vehicle

Wenpeng¹,

Jian-Ming

2020

Proceedings of the Institution of Mechanical Engineers, Part D:

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A hybrid coupling scheme of parallel connection and contralateral cross-linking was proposed based on the characteristics of high centroid position and low rollover threshold on hydro-pneumatic suspension (HPS) for a seven-axle elevated platform vehicle. A dynamic model with 20 DOFs which can comprehensively reflect vehicle coupling vibration including vertical-lateral-longitudinal-transverse and the joint simulation model of Simulink and AMESim were established based on the structural characteristics of the vehicle. Furthermore, the random road surface model linking the wheels was constructed by filter shaping white noise. Based on the model of hybrid coupling HPS, the study of joint simulation and test on the whole vehicle were conducted, and improved ant colony algorithm (IACA) was applied to the multi-objective optimisation study of HPS parameter matching. The comparison between simulation and test data shows that the weighted acceleration PSD curve is in good agreement, and the relative error of weighted acceleration RMS is small, which indicated that the theoretical model was accurate. The results of simulation and testing show that the optimal parameter matching scheme output by IACA can improve vehicle ride comfort and stability to a significant extent.

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Stiffness Characteristics Analysis of Interconnected Hydro-Pneumatic Suspension for Heavy Multi-Axle Vehicles

Cited by 3 publications

References 2 publications

Research on Damping Hole Optimization of Hydro-Pneumatic Suspension for Mining Trucks under Variable Load Conditions

Research on Damping Hole Optimization of Hydro-Pneumatic Suspension for Mining Trucks under Variable Load Conditions

Modeling of hydro-pneumatic suspension system with fractional order terms and simulation analysis of road friendliness

Modelling and characteristics of hybrid coupling hydro-pneumatic suspension for a seven-axle vehicle

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