Performance research and safety verification of compound structure air spring

Yin, Lihang; Xu, Wei; Hu, Zechao; Zhang, Yuanchao; Li, Chuang

doi:10.1177/1687814020974794

Cited by 5 publications

(3 citation statements)

References 11 publications

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“…The stiffness unit of SMRAD adopts an air spring structure. The air spring has ideal nonlinear elastic characteristics, which can effectively limit the amplitude of vehicle vibration and reduce the impact of vehicle vibration on the driver [41][42][43].…”

Section: Structure Of the Smradmentioning

confidence: 99%

Self-sensing automotive magnetorheological dampers for low frequency vibration

Deng

Gao

et al. 2021

Smart Mater. Struct.

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This paper presents a magnetorheological (MR) automobile damper with a self-sensing function. The self-sensing structure is designed based on the principle of triboelectric nanogeneration. The self-sensing performance of the MR automobile damper is verified from the theoretical analysis and experimental results. A vehicle suspension vibration control system composed of 1/4 vehicle suspension, fuzzy control algorithm, and vibration excitation platform is established to test the vibration control performance of self-sensing MR automobile damper (SMRAD). The experimental results show that the fuzzy control system reduces the body acceleration of the vehicle suspension compared with the passive control. The root mean square value of vehicle suspension body acceleration is reduced by 28.8% compared with the vehicle body acceleration under passive control. This verifies the effectiveness of the self-sensing performance of the speed self-sensing structure of the MR automobile damper. The application of the SMRAD in the vehicle suspension improves the vibration reduction performance of the vehicle suspension.

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Section: Structure Of the Smradmentioning

confidence: 99%

Self-sensing automotive magnetorheological dampers for low frequency vibration

Deng

Gao

et al. 2021

Smart Mater. Struct.

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“…Moreover, for air spring research, Li et al [11,12] established a theoretical mechanical model for transverse and longitudinal stiffness of an oblong sac vibration isolator and experimentally verified its transverse and longitudinal static stiffness. Yin et al [13] developed a parametric model for the structure of sac air springs based on linear elasticity, Coulomb friction, and fractional derivative Maxwell's model. A unified model for vertical stiffness of the sac air spring was developed based on the structural parameters and mechanical model of the rubber bag.…”

Section: Introductionmentioning

confidence: 99%

CSAPSO-BPNN-Based Modeling of End Airbag Stiffness of Nursing Transfer Robot

Liu,

Li,

et al. 2024

Electronics

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The use of nursing transfer robots is a vital solution to the problem of daily mobility difficulties for semi-disabilities. However, the fact that care-receivers have different physical characteristics leads to force concentration during human–robot interaction, which affects their comfort. To address this problem, this study installs an array of double wedge-shaped airbags onto the end-effector of a robot, and analyses airbag mechanical properties. Firstly, this study performed the mechanical testing and data collection of the airbag, including its external load and displacement, at various gas masses. Then, the performance of the Back Propagation (BP) neural network is improved using chaos (C) theory and simulated annealing particle swarm optimization (SAPSO), resulting in the establishment of the CSAPSO-BP neural network. By this method, a fitting model is developed to determine the mechanical parameters of the wedge-shaped airbag stiffness, and the fitting relation of external load–displacement is obtained. Data analyses show that the wedge-shaped airbag stiffness increases quadratically, linearly, and with a constant rate as the gas mass increases. The airbag stiffness regulation and model describe its three distinct phases with quadratic, linear, and linear invariant characteristics as the gas mass changes. These findings contribute to the structural optimization of airbags.

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“…Li et al (2017) analyzed the stability of a linear hybrid maglev-air spring vibration isolation. Yin et al (2021) conducted the safety verification of a compound structure air spring. Qiu et al (2021) analyzed the safety control strategy for a floating raft vibration isolation system.…”

Section: Introductionmentioning

confidence: 99%

Rolling stability analysis of high-static-low-dynamic stiffness floating raft vibration isolation systems

Shuai

2022

Journal of Vibration and Control

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Floating raft vibration isolation (FRVI) systems employing isolators with high-static-low-dynamic stiffness (HSLDS) characteristics offer excellent large-scale and multidirectional vibration attenuation performance ideally suited to stealth applications in ocean faring vessels. However, the rolling motions of vessels in heavy seas can produce large displacements and induce instability in HSLDS-FRVI systems, and our present state of understanding of these systems is insufficient to facilitate the design of more stable systems. The present work addresses this issue by establishing an accurate analytical model of a double-layer FRVI system with 12 degrees of freedom to facilitate detailed rolling stability analyses when adopting HSLDS isolators. This model is also adapted to obtain a simplified single-layer HSLDS-FRVI system model and a corresponding single-layer equivalent linear system (ELS) model for investigating the factors contributing to FRVI system stability. The results demonstrate that the single-layer HSLDS-FRVI system obtains increasingly superior rolling stability compared to that of the corresponding ELS as the system loading increases. Also, good rolling stability can be maintained by applying proper mounting locations for the isolators. Additional factors contributing to FRVI system stability are deduced by comparing the results obtained for double-layer HSLDS-HSLDS, HSLDS-ELS, ELS-HSLDS, and ELS-ELS systems. The results demonstrate that the use of isolators with HSLDS characteristics is most beneficial for improving the rolling stability of double-layer FRVI systems when applied between the ground and bottom layers, and maximum rolling stability is obtained when the mass of the lower level is close to that of the upper level.

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Performance research and safety verification of compound structure air spring

Cited by 5 publications

References 11 publications

Self-sensing automotive magnetorheological dampers for low frequency vibration

Self-sensing automotive magnetorheological dampers for low frequency vibration

CSAPSO-BPNN-Based Modeling of End Airbag Stiffness of Nursing Transfer Robot

Rolling stability analysis of high-static-low-dynamic stiffness floating raft vibration isolation systems

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