The University of Southampton
University of Southampton Institutional Repository

A study on calculation method for mechanical impedance of air spring

A study on calculation method for mechanical impedance of air spring
A study on calculation method for mechanical impedance of air spring
This paper proposes an approximate analytic method of obtaining the mechanical impedance of air spring. The sound pressure distribution in cylindrical air spring is calculated based on the linear air wave theory. The influences of different boundary conditions on the acoustic pressure field distribution in cylindrical air spring are analysed. A 1-order ordinary differential matrix equation for the state vector of revolutionary shells under internal pressure is derived based on the non-moment theory of elastic thin shell. Referring to the transfer matrix method, a kind of expanded homogeneous capacity high precision integration method is introduced to solve the non-homogeneous matrix differential equation. Combined the solved stress field of shell with the calculated sound pressure field in air spring under the displacement harmonic excitation, the approximate analytical expression of the input and transfer mechanical impedance for the air spring can be achieved. The numerical simulation with the Comsol Multiphysics software verifies the correctness of theoretical analysis result.
1742-6588
1-7
Changgeng, Shuai
0c9e0506-46ba-44dc-bd89-f14d83eab5ab
Penghui, Li
441518b0-86fa-4677-b721-35b3f9c0f7f2
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96
Changgeng, Shuai
0c9e0506-46ba-44dc-bd89-f14d83eab5ab
Penghui, Li
441518b0-86fa-4677-b721-35b3f9c0f7f2
Rustighi, Emiliano
9544ced4-5057-4491-a45c-643873dfed96

Changgeng, Shuai, Penghui, Li and Rustighi, Emiliano (2016) A study on calculation method for mechanical impedance of air spring. Journal of Physics: Conference Series, 1-7. (In Press)

Record type: Article

Abstract

This paper proposes an approximate analytic method of obtaining the mechanical impedance of air spring. The sound pressure distribution in cylindrical air spring is calculated based on the linear air wave theory. The influences of different boundary conditions on the acoustic pressure field distribution in cylindrical air spring are analysed. A 1-order ordinary differential matrix equation for the state vector of revolutionary shells under internal pressure is derived based on the non-moment theory of elastic thin shell. Referring to the transfer matrix method, a kind of expanded homogeneous capacity high precision integration method is introduced to solve the non-homogeneous matrix differential equation. Combined the solved stress field of shell with the calculated sound pressure field in air spring under the displacement harmonic excitation, the approximate analytical expression of the input and transfer mechanical impedance for the air spring can be achieved. The numerical simulation with the Comsol Multiphysics software verifies the correctness of theoretical analysis result.

Text
2283.pdf - Accepted Manuscript
Available under License Creative Commons Attribution.
Download (272kB)

More information

Accepted/In Press date: 12 August 2016
Organisations: Dynamics Group

Identifiers

Local EPrints ID: 399649
URI: https://eprints.soton.ac.uk/id/eprint/399649
ISSN: 1742-6588
PURE UUID: ae54eb60-eaf2-4c8c-9c1a-298374e08555
ORCID for Emiliano Rustighi: ORCID iD orcid.org/0000-0001-9871-7795

Catalogue record

Date deposited: 23 Aug 2016 08:41
Last modified: 06 Jun 2018 12:43

Export record

Download statistics

Downloads from ePrints over the past year. Other digital versions may also be available to download e.g. from the publisher's website.

View more statistics

Atom RSS 1.0 RSS 2.0

Contact ePrints Soton: eprints@soton.ac.uk

ePrints Soton supports OAI 2.0 with a base URL of https://eprints.soton.ac.uk/cgi/oai2

This repository has been built using EPrints software, developed at the University of Southampton, but available to everyone to use.

We use cookies to ensure that we give you the best experience on our website. If you continue without changing your settings, we will assume that you are happy to receive cookies on the University of Southampton website.

×