Vibrational characteristics of piping system in air conditioning outdoor unit

The modal analysis of piping system in air conditioner (AC) outdoor unit is essential to investigate the vibration properties of the system. In view of the growing significance of numerical finite element (FE) model for vibration behaviour prediction, the AC piping elastic end support characterizati...

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Main Authors:	Loh, S.K., Faris, Waleed Fekry, Chin, W. M.
Format:	Article
Language:	English
Published:	Zhongguo Kexue Zazhishe 2011
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://irep.iium.edu.my/11476/ http://irep.iium.edu.my/11476/ http://irep.iium.edu.my/11476/4/waleed_11ye1154.pdf

id	iium-11476
recordtype	eprints
spelling	iium-114762013-06-27T08:36:14Z http://irep.iium.edu.my/11476/ Vibrational characteristics of piping system in air conditioning outdoor unit Loh, S.K. Faris, Waleed Fekry Chin, W. M. TJ Mechanical engineering and machinery The modal analysis of piping system in air conditioner (AC) outdoor unit is essential to investigate the vibration properties of the system. In view of the growing significance of numerical finite element (FE) model for vibration behaviour prediction, the AC piping elastic end support characterization has been explored. The axial and radial stiffness variables (k a , k r1, k r2) of the compressor-piping mounting are obtained and represented by dynamic stiffness of compressor grommet. They are obtained from dynamic load deflection test based on compressor operating condition such as excitation frequency and amplitude. The unknown stiffness variables of the other tube end (chassis-piping mounting) are determined by parameter fine tuning. An experimental modal analysis using impact hammer test has also been employed to determine the vibration properties such as natural frequencies, mode shapes and damping ratio of the piping structures. The modal parameters acquisition using SCADAS mobile acquisition system and LMS Impact Testing software is compared with the corresponding simulated modal properties using Abaqus. Most of the simulated natural frequencies achieve good correlation with the measured frequencies and it is reasonably a good prediction model to predict vibration behaviour of AC piping structures. Zhongguo Kexue Zazhishe 2011-03-31 Article PeerReviewed application/pdf en http://irep.iium.edu.my/11476/4/waleed_11ye1154.pdf Loh, S.K. and Faris, Waleed Fekry and Chin, W. M. (2011) Vibrational characteristics of piping system in air conditioning outdoor unit. Science China Technological Sciences, 54 (5). pp. 1154-1168. ISSN 1674-7321 (print), 1869-1900 (online) http://www.springerlink.com/content/2n1577m705592111/
repository_type	Digital Repository
institution_category	Local University
institution	International Islamic University Malaysia
building	IIUM Repository
collection	Online Access
language	English
topic	TJ Mechanical engineering and machinery
spellingShingle	TJ Mechanical engineering and machinery Loh, S.K. Faris, Waleed Fekry Chin, W. M. Vibrational characteristics of piping system in air conditioning outdoor unit
description	The modal analysis of piping system in air conditioner (AC) outdoor unit is essential to investigate the vibration properties of the system. In view of the growing significance of numerical finite element (FE) model for vibration behaviour prediction, the AC piping elastic end support characterization has been explored. The axial and radial stiffness variables (k a , k r1, k r2) of the compressor-piping mounting are obtained and represented by dynamic stiffness of compressor grommet. They are obtained from dynamic load deflection test based on compressor operating condition such as excitation frequency and amplitude. The unknown stiffness variables of the other tube end (chassis-piping mounting) are determined by parameter fine tuning. An experimental modal analysis using impact hammer test has also been employed to determine the vibration properties such as natural frequencies, mode shapes and damping ratio of the piping structures. The modal parameters acquisition using SCADAS mobile acquisition system and LMS Impact Testing software is compared with the corresponding simulated modal properties using Abaqus. Most of the simulated natural frequencies achieve good correlation with the measured frequencies and it is reasonably a good prediction model to predict vibration behaviour of AC piping structures.
format	Article
author	Loh, S.K. Faris, Waleed Fekry Chin, W. M.
author_facet	Loh, S.K. Faris, Waleed Fekry Chin, W. M.
author_sort	Loh, S.K.
title	Vibrational characteristics of piping system in air conditioning outdoor unit
title_short	Vibrational characteristics of piping system in air conditioning outdoor unit
title_full	Vibrational characteristics of piping system in air conditioning outdoor unit
title_fullStr	Vibrational characteristics of piping system in air conditioning outdoor unit
title_full_unstemmed	Vibrational characteristics of piping system in air conditioning outdoor unit
title_sort	vibrational characteristics of piping system in air conditioning outdoor unit
publisher	Zhongguo Kexue Zazhishe
publishDate	2011
url	http://irep.iium.edu.my/11476/ http://irep.iium.edu.my/11476/ http://irep.iium.edu.my/11476/4/waleed_11ye1154.pdf
first_indexed	2023-09-18T20:20:47Z
last_indexed	2023-09-18T20:20:47Z
_version_	1777408092871327744

Vibrational characteristics of piping system in air conditioning outdoor unit

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