Numerical analysis of a dual-chamber hydro-pneumatic suspension using nonlinear vibration theory and fractional calculus

Zhiguo Sang; Mingming Dong; Liang Gu

doi:10.1177/1687814017705797

Numerical analysis of a dual-chamber hydro-pneumatic suspension using nonlinear vibration theory and fractional calculus

Zhiguo Sang, Mingming Dong, Liang Gu^*

^*Corresponding author for this work

School of Mechanical Engineering

Beijing Institute of Technology

Research output: Contribution to journal › Article › peer-review

13 Citations (Scopus)

Abstract

A dual-chamber hydro-pneumatic suspension, a modified version of the traditional hydro-pneumatic suspension, can provide enhanced isolation performance. In this article, we use two very different theories, nonlinear vibration theory and fractional calculus theory, to analyze the characteristics of a dual-chamber hydro-pneumatic suspension. We find that both the storage stiffness and damping coefficient show a strong dependency on the excitation frequency. The effect of various suspension parameters on storage stiffness and damping coefficient is discussed in detail using numerical simulation. We also performed experiments that confirm the validity of the mathematical expressions for both the storage stiffness and the damping coefficient.

Original language	English
Journal	Advances in Mechanical Engineering
Volume	9
Issue number	5
DOIs	https://doi.org/10.1177/1687814017705797
Publication status	Published - May 2017

Keywords

Dual-chamber
Equivalent damping coefficient
Equivalent stiffness
Fractional calculus
Harmonic balance method

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abstract = "A dual-chamber hydro-pneumatic suspension, a modified version of the traditional hydro-pneumatic suspension, can provide enhanced isolation performance. In this article, we use two very different theories, nonlinear vibration theory and fractional calculus theory, to analyze the characteristics of a dual-chamber hydro-pneumatic suspension. We find that both the storage stiffness and damping coefficient show a strong dependency on the excitation frequency. The effect of various suspension parameters on storage stiffness and damping coefficient is discussed in detail using numerical simulation. We also performed experiments that confirm the validity of the mathematical expressions for both the storage stiffness and the damping coefficient.",

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N2 - A dual-chamber hydro-pneumatic suspension, a modified version of the traditional hydro-pneumatic suspension, can provide enhanced isolation performance. In this article, we use two very different theories, nonlinear vibration theory and fractional calculus theory, to analyze the characteristics of a dual-chamber hydro-pneumatic suspension. We find that both the storage stiffness and damping coefficient show a strong dependency on the excitation frequency. The effect of various suspension parameters on storage stiffness and damping coefficient is discussed in detail using numerical simulation. We also performed experiments that confirm the validity of the mathematical expressions for both the storage stiffness and the damping coefficient.

AB - A dual-chamber hydro-pneumatic suspension, a modified version of the traditional hydro-pneumatic suspension, can provide enhanced isolation performance. In this article, we use two very different theories, nonlinear vibration theory and fractional calculus theory, to analyze the characteristics of a dual-chamber hydro-pneumatic suspension. We find that both the storage stiffness and damping coefficient show a strong dependency on the excitation frequency. The effect of various suspension parameters on storage stiffness and damping coefficient is discussed in detail using numerical simulation. We also performed experiments that confirm the validity of the mathematical expressions for both the storage stiffness and the damping coefficient.

KW - Dual-chamber

KW - Equivalent damping coefficient

KW - Equivalent stiffness

KW - Fractional calculus

KW - Harmonic balance method

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Numerical analysis of a dual-chamber hydro-pneumatic suspension using nonlinear vibration theory and fractional calculus

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Keywords

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