Dual-chamber pneumatically interconnected suspension: Modeling and theoretical analysis

Zhu, Hengjia; Yang, James; Zhang, Yunqing

doi:10.1016/j.ymssp.2020.107125

Cited by 37 publications

(14 citation statements)

References 32 publications

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“…The flow of the valve is determined by the inlet pressure p i and outlet pressure p 0 . The ratio p 0 /p i in different cases determines the different airflow equations with (17)…”

Section: Airflow Of the Pressure Regulatormentioning

confidence: 99%

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Research on the Pressure Regulator Effect on a Pneumatic Vibration Isolation System

Shi

Sun

et al. 2022

Chin. J. Mech. Eng.

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The pneumatic vibration isolator (PVI) plays an increasingly important role in precision manufacturing. In this paper, aiming to detect the performance of the pressure regulator in the PVI system, a PVI testing system with a pressure regulator is designed and developed. Firstly, the structure of the pneumatic spring is presented and analyzed, and the nonlinear stiffness is obtained based on the ideal gas model and material mechanics. Then, according to the working principle and continuity equations of ideal airflow, a dynamic model of the PVI system with a pressure regulator is established. Through the simulation analysis, the vibration isolation performance is improved with the efficient and precise pressure regulator. The average values of both the vibration velocity and transmission rate decrease when the vibration is set to 4, 10, 20 and 40 Hz, respectively. The experiments demonstrate the reliability and effectiveness of the pressure regulator. This achievement will become an important basis for future research concerning precision manufacturing.

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“…The flow of the valve is determined by the inlet pressure p i and outlet pressure p 0 . The ratio p 0 /p i in different cases determines the different airflow equations with (17)…”

Section: Airflow Of the Pressure Regulatormentioning

confidence: 99%

“…The passive PVI is a simple method for high frequency vibration isolation. The stiffness could be changed with the payload, and the PVI model is widely analyzed, such as the Nishimura model [13], Simpack-based model [14], Vampire-based model [15], and the Berg model [16,17].…”

Section: Introductionmentioning

confidence: 99%

Research on the Pressure Regulator Effect on a Pneumatic Vibration Isolation System

Shi

Sun

et al. 2022

Chin. J. Mech. Eng.

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“…IS can be described as a family of suspensions, in which displacement at one wheel station can give rise to force at other wheel stations (Smith and Walker, 2005). The transmission medium can be realized by either mechanical (Smith and Walker, 2005), hydraulic (Ding et al, 2015), gaseous (Cao et al, 2021), hydro-pneumatic (Zhu et al, 2021), or electrical (Ning et al, 2020) system. Considering flexible layout, the hydraulically interconnected suspension (HIS) is more easily achieved the front-to-rear connection to adjust the pitch stiffness when compared to the mechanical form.…”

Section: Introductionmentioning

confidence: 99%

“…Odhams and Cebon (2006) proposed a synthesized tuning methodology to study coupled suspensions with more generalized mathematical model in frequency domain. Zhu et al (2018) employed full factorial design of experiment method to tune the pipe length and diameter. In this study, the parametric design is expected to tune the typical stiffness and damping parameters and consequently achieve vibration suppression.…”

Section: Introductionmentioning

confidence: 99%

“…It can be seen that most of the aforementioned studies focused on dynamic characteristics (roll or pitch vibration) of two-axle SUV or truck. However, it can hardly find public researches concentrating on tri-axle heavy trucks equipped with HIS systems, while the existing field or laboratory bench experiments cannot completely represent the inherent vibration characteristics of the HIS system (Zhu et al, 2018). It can be found that recently published researches present the vibration isolation potential using mathematical simulations.…”

Section: Introductionmentioning

confidence: 99%

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Vibration suppression investigation and parametric design of tri-axle straight heavy truck with pitch-resistant hydraulically interconnected suspension

Ding

Liu

Jiang

et al. 2021

Journal of Vibration and Control

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The vibration suppression of the proposed pitch-resistant hydraulically interconnected suspension system for the tri-axle straight truck is investigated, and the vibration isolation performances are parametrically designed to achieve smaller body vibration and tire dynamic load using increased pitch stiffness and optimized pressure loss coefficient. For the hydraulic subsystem, the transfer impedance matrix method is applied to derive the impedance matrix. These hydraulic forces are incorporated into the motion equations of mechanical subsystem as external forces according to relationships between boundary flow and mechanical state vectors. In terms of the additional mode stiffness/damping and suspension performance requirements, the cylinder surface area, accumulator pressure, and damper valve’s pressure loss coefficient are comprehensively tuned with parametric design technique and modal analysis method. It is found the isolation capacity is heavily dependent on installation scheme and fluid physical parameters. Especially, the surface area can be designed for the oppositional installation to separately raise pitch stiffness without increasing bounce stiffness. The pressure loss coefficients are tuned with design of experiment approach and evaluated using all conflict indexes with normalized dimensionless evaluation factors. The obtained numerical results indicate that the proposed pitch-resistant hydraulically interconnected suspension system can significantly inhibit both the body and tire vibrations with decreased suspension deformation, and the tire dynamic load distribution among wheel stations is also improved.

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Decoupled Multi-mode Controllable Electrically Interconnected Suspension for Improved Vehicle Damping Performance

Liu,

Ning,

liu

et al. 2024

Lecture Notes in Electrical Engineering

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Dual-chamber pneumatically interconnected suspension: Modeling and theoretical analysis

Cited by 37 publications

References 32 publications

Research on the Pressure Regulator Effect on a Pneumatic Vibration Isolation System

Research on the Pressure Regulator Effect on a Pneumatic Vibration Isolation System

Vibration suppression investigation and parametric design of tri-axle straight heavy truck with pitch-resistant hydraulically interconnected suspension

Decoupled Multi-mode Controllable Electrically Interconnected Suspension for Improved Vehicle Damping Performance

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