Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading

Motor bracket has been designed as a framework to support motor and fan in air conditioning products. Vibration and fatigue of motor bracket has been continuously a concern which may lead to structural failure if the resulting vibration and stresses are severe and excessive. It is a significant stud...

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Main Authors:	Loh, S.K., Chin, W. M., Faris, Waleed Fekry
Format:	Article
Language:	English
Published:	Elsevier 2009
Subjects:	TJ Mechanical engineering and machinery
Online Access:	http://irep.iium.edu.my/1033/ http://irep.iium.edu.my/1033/ http://irep.iium.edu.my/1033/ http://irep.iium.edu.my/1033/1/Fatigue_analysis_of_Package_Terminal_Air_Conditioner_motor_bracket_under_dynamic_loading.pdf

id	iium-1033
recordtype	eprints
spelling	iium-10332011-08-08T03:56:43Z http://irep.iium.edu.my/1033/ Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading Loh, S.K. Chin, W. M. Faris, Waleed Fekry TJ Mechanical engineering and machinery Motor bracket has been designed as a framework to support motor and fan in air conditioning products. Vibration and fatigue of motor bracket has been continuously a concern which may lead to structural failure if the resulting vibration and stresses are severe and excessive. It is a significant study which requires in-depth investigation to understand the structural characteristics and its dynamic behavior. This paper presents and focuses on some Finite Element (FE) analyses performed such as frequency analysis to determine the structural response due to harmonic excitation over a frequency range. The resonant frequency can be predicted based on the responses in frequency domain. Besides that, the static and dynamic vibration analyses give the maximum structural stress condition under static loading and dynamic condition. The predicted maximum stresses are compared with inherent material yield strength. The plastic deformation is not covered in the study as only elastic property is defined. A fatigue failure prediction of the current P-TAC motor bracket using FE simulation and fatigue failure criteria approach has also been studied. The dynamic stress curve giving mean stress and alternating stress has been applied in the established fatigue failure criteria such as Yield Criteria and Fracture Criteria to predict the possibility of fatigue occurrence. This approach is considered a conservative prediction approach to prevent structural fatigue which is best suited and safe for certain design applications. In the effort to strengthen the motor bracket, different modifications of the motor bracket geometry have been investigated and the comparison of results of each analysis is presented. The rib support, edge radius and thickness have been modified and added to examine the effect to the overall static and dynamic behavior. It is found that the rib-support addition and the increase of edge radius can effectively improve the structural performance based on the analyses involved. Elsevier 2009 Article PeerReviewed application/pdf en http://irep.iium.edu.my/1033/1/Fatigue_analysis_of_Package_Terminal_Air_Conditioner_motor_bracket_under_dynamic_loading.pdf Loh, S.K. and Chin, W. M. and Faris, Waleed Fekry (2009) Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading. Materials and Design, 30. pp. 3206-3216. ISSN 0261-3069 http://www.sciencedirect.com/science/article/pii/S0261306909000156#rpctoken=1344739039 10.1016/j.matdes.2009.01.010
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. Chin, W. M. Faris, Waleed Fekry Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading
description	Motor bracket has been designed as a framework to support motor and fan in air conditioning products. Vibration and fatigue of motor bracket has been continuously a concern which may lead to structural failure if the resulting vibration and stresses are severe and excessive. It is a significant study which requires in-depth investigation to understand the structural characteristics and its dynamic behavior. This paper presents and focuses on some Finite Element (FE) analyses performed such as frequency analysis to determine the structural response due to harmonic excitation over a frequency range. The resonant frequency can be predicted based on the responses in frequency domain. Besides that, the static and dynamic vibration analyses give the maximum structural stress condition under static loading and dynamic condition. The predicted maximum stresses are compared with inherent material yield strength. The plastic deformation is not covered in the study as only elastic property is defined. A fatigue failure prediction of the current P-TAC motor bracket using FE simulation and fatigue failure criteria approach has also been studied. The dynamic stress curve giving mean stress and alternating stress has been applied in the established fatigue failure criteria such as Yield Criteria and Fracture Criteria to predict the possibility of fatigue occurrence. This approach is considered a conservative prediction approach to prevent structural fatigue which is best suited and safe for certain design applications. In the effort to strengthen the motor bracket, different modifications of the motor bracket geometry have been investigated and the comparison of results of each analysis is presented. The rib support, edge radius and thickness have been modified and added to examine the effect to the overall static and dynamic behavior. It is found that the rib-support addition and the increase of edge radius can effectively improve the structural performance based on the analyses involved.
format	Article
author	Loh, S.K. Chin, W. M. Faris, Waleed Fekry
author_facet	Loh, S.K. Chin, W. M. Faris, Waleed Fekry
author_sort	Loh, S.K.
title	Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading
title_short	Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading
title_full	Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading
title_fullStr	Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading
title_full_unstemmed	Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading
title_sort	fatigue analysis of package terminal air conditioner motor bracket under dynamic loading
publisher	Elsevier
publishDate	2009
url	http://irep.iium.edu.my/1033/ http://irep.iium.edu.my/1033/ http://irep.iium.edu.my/1033/ http://irep.iium.edu.my/1033/1/Fatigue_analysis_of_Package_Terminal_Air_Conditioner_motor_bracket_under_dynamic_loading.pdf
first_indexed	2023-09-18T20:08:15Z
last_indexed	2023-09-18T20:08:15Z
_version_	1777407303832567808

Fatigue analysis of Package Terminal Air Conditioner motor bracket under dynamic loading

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