An analytical study of the performance indices of air spring suspensions over the passive suspension

Moheyeldein, M.M; Abd-El-Tawwab, Ali M.; El-Gwwad, K. A. Abd; Salem, M.M.M.

doi:10.1016/j.bjbas.2018.06.004

Cited by 51 publications

(44 citation statements)

References 19 publications

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“…The air damper system is modeled by a serial connection of mass (M a ), spring (K a ), and viscous damping (C a ), respectively. M a is related to the air mass that flows through the orifice hole and connecting pipe when the piston is compressed and expanded (Moheyeldein et al, 2018). The U-shaped landing gear and air damper configuration are parallel.…”

Section: Figure 1 Uav Landing Processmentioning

confidence: 99%

“…and M a in Equations ( 1)-( 3) are the air spring stiffness, the damping coefficient of the air damper, and the air mass flow inside the connecting pipe, respectively. In the case of an air balloon that is connected directly to the outside environment via a connecting pipe as used in this study, K a , C a , and M a can be calculated as follows (Moheyeldein et al, 2018):…”

Section: Governing Equations During Landingmentioning

confidence: 99%

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Shock and harmonic response analysis of UAV nose landing gear system with air damper

et al. 2021

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This research presents a response analysis of a UAV nose landing gear system equipped with an air damper under shock and harmonic excitation. The study begins with dynamic modeling of the UAV landing gear system. The system dynamics consists of a main mass and a wheel mass that are connected to each other by a U-shaped landing gear. The U-shaped landing gear is modeled by a linear spring and dashpot element. The air damper is added to the landing gear to increase the damping. The air damper consists of an air balloon that is connected to the outside via an orifice hole and the connecting pipe. A serial connection of spring, mass, and dashpot elements describes the air damper dynamic model. The simulation study is conducted to evaluate the effect of the landing gear parameters variation on the UAV dynamic response under shock and harmonic excitation. The maximum acceleration and displacement response of the UAV body under shock load is greatly affected by the air balloon cross-sectional area (A ef ) and the stiffness of the U-shaped landing gear system (K L ). The harmonic response of the UAV body is evaluated from the ratio between the UAV body displacement amplitude and the base excitation amplitude under harmonic excitation. It is shown that the air balloon cross-sectional area (A ef ) and the connecting pipe length (l p ) have a significant effect on the UAV mass displacement ratio. The experimental study is ABOUT THE AUTHOR All persons who meet authorship criteria are listed as authors, and all authors certify that they have participated sufficiently in the work to take public responsibility for the content, including participation in the concept, design, analysis, writing, or revision of the manuscript.

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Section: Figure 1 Uav Landing Processmentioning

confidence: 99%

Section: Governing Equations During Landingmentioning

confidence: 99%

Shock and harmonic response analysis of UAV nose landing gear system with air damper

et al. 2021

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“…was developed to compare the ride performance of two suspension systems: the traditional and new air spring of suspension systems for a semi-trailer truck [3], the dynamic model of quarter vehicle with 2 d.o.f. was established to compare the ride performance of two suspension system models: classic air spring and dynamic air spring models [4], and the 3D dynamic model with 15 d.o.f. was used to analyze the ride performance of the hydro-pneumatic suspension system compared to the rubber and air spring suspension systems [5].…”

Section: Introductionmentioning

confidence: 99%

Optimal design parameters of air suspension systems for semi-trailer truck. Part 1: modeling and algorithm

Quynh¹,

Tuấn²,

Thao³

et al. 2020

Vib. proced.

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The purpose of this paper is to improve the performance of air suspension systems for a semi-trailer truck in the direction of reducing the dynamic wheel load acting on road surface (Part 1: modeling and algorithm). To achieve the goal of finding the optimal design parameters for the air suspension systems, a half-vehicle dynamic model under the road-vehicle interaction with 12 degrees of freedom (d.o.f) is established for searching the optimal design parameters of vehicle suspensions using genetic algorithm (GA). Dynamic load coefficient (DLC) is considered as a target function. Two optimal conditions: optimal design of geometrical parameters of air spring suspension systems (Case 1) and optimal design of parameters of air suspension systems (Case 2) are selected in this study. The results of this paper are the basis for optimization and discussion in Part 2 as the results and discussion.

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“…Moheyelde in combined dual air chamber air springs with active and passive suspensions separately. He analyzed the influence of parameters such as chamber pressure and connecting pipe inner diameter on the suspension [3].However, there is no related research on Shared Chamber Air Suspension(SCAS).SCAS consists of one shared air chamber, connecting pipes and air springs, which was original developed by authors of this paper. Each spring in SCAScan be connected by connecting pipes.…”

Section: Introductionmentioning

confidence: 99%

Study on FuzzPID control of Shared Chamber Air Suspension for ride comfort

Wang

Zhang

et al. 2019

MATEC Web Conf.

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In order to study a new type of air suspension system, the quarter dynamic model of semi-active suspension system is established based on FuzzPID control theory; At the same time, a test bench is established. Through analyzing the data which got in simulation and test, the result show that the performance of air spring parameters has obvious improvement on the acceleration of the vehicle body. Butthe performance on the deflection of the suspension and the dynamic tire load is not the same. By changing the frequency of sinusoidal excitation, the specific performance of ride comfort parameters in different sinusoidal excitation has been studied

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An analytical study of the performance indices of air spring suspensions over the passive suspension

Cited by 51 publications

References 19 publications

Shock and harmonic response analysis of UAV nose landing gear system with air damper

Shock and harmonic response analysis of UAV nose landing gear system with air damper

Optimal design parameters of air suspension systems for semi-trailer truck. Part 1: modeling and algorithm

Study on FuzzPID control of Shared Chamber Air Suspension for ride comfort

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