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An investigation into NVC characteristics of vehicle behaviour using modal analysis

NVC characterizations of vehicle behavior is one essential part of the development targets in automotive industries. Therefore understanding dynamic behavior of each structural part of the vehicle is a major requirement in improving the NVC characteristics of a vehicle. The main focus of this resear...

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Main Authors: Hanouf, Zahir, Faris, Waleed Fekry, Ahmad, Kartini
Format: Conference or Workshop Item
Language:English
English
Published: Institute of Physics Publishing 2017
Subjects:
TL1 Motor vehicles
Online Access:http://irep.iium.edu.my/56365/1/56365_An%20investigation%20into%20NVC.pdf
http://irep.iium.edu.my/56365/2/56365_An%20investigation%20into%20NVC_SCOPUS.pdf
http://irep.iium.edu.my/56365/
http://iopscience.iop.org/article/10.1088/1757-899X/184/1/012027
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spelling my.iium.irep.563652017-06-21T01:11:51Z http://irep.iium.edu.my/56365/ An investigation into NVC characteristics of vehicle behaviour using modal analysis Hanouf, Zahir Faris, Waleed Fekry Ahmad, Kartini TL1 Motor vehicles NVC characterizations of vehicle behavior is one essential part of the development targets in automotive industries. Therefore understanding dynamic behavior of each structural part of the vehicle is a major requirement in improving the NVC characteristics of a vehicle. The main focus of this research is to investigate structural dynamic behavior of a passenger car using modal analysis part by part technique and apply this method to derive the interior noise sources. In the first part of this work computational modal analysis part by part tests were carried out to identify the dynamic parameters of the passenger car. Finite elements models of the different parts of the car are constructed using VPG 3.2 software. Ls-Dyna pre and post processing was used to identify and analyze the dynamic behavior of each car components panels. These tests had successfully produced natural frequencies and their associated mode shapes of such panels like trunk, hood, roof and door panels. In the second part of this research, experimental modal analysis part by part is performed on the selected car panels to extract modal parameters namely frequencies and mode shapes. The study establishes the step-by-step procedures to carry out experimental modal analysis on the car structures, using single input excitation and multi-output responses (SIMO) technique. To ensure the validity of the results obtained by the previous method an inverse method was done by fixing the response and moving the excitation and the results found were absolutely the same. Finally, comparison between results obtained from both analyses showed good similarity in both frequencies and mode shapes. Conclusion drawn from this part of study was that modal analysis part-by-part can be strongly used to establish the dynamic characteristics of the whole car. Furthermore, the developed method is also can be used to show the relationship between structural vibration of the car panels and the passengers' noise comfort inside the cabin. Institute of Physics Publishing 2017-04 Conference or Workshop Item REM application/pdf en http://irep.iium.edu.my/56365/1/56365_An%20investigation%20into%20NVC.pdf application/pdf en http://irep.iium.edu.my/56365/2/56365_An%20investigation%20into%20NVC_SCOPUS.pdf Hanouf, Zahir and Faris, Waleed Fekry and Ahmad, Kartini (2017) An investigation into NVC characteristics of vehicle behaviour using modal analysis. In: 3rd International Conference on Mechanical, Automotive and Aerospace Engineering 2016 (ICMAAE’16), 25th-27th July 2016, Kuala Lumpur, Malaysia. http://iopscience.iop.org/article/10.1088/1757-899X/184/1/012027 10.1088/1757-899X/184/1/012027
institution Universiti Islam Antarabangsa Malaysia
building IIUM Library
collection Institutional Repository
continent Asia
country Malaysia
content_provider International Islamic University Malaysia
content_source IIUM Repository (IREP)
url_provider http://irep.iium.edu.my/
language English
English
topic TL1 Motor vehicles
spellingShingle TL1 Motor vehicles
Hanouf, Zahir
Faris, Waleed Fekry
Ahmad, Kartini
An investigation into NVC characteristics of vehicle behaviour using modal analysis
description NVC characterizations of vehicle behavior is one essential part of the development targets in automotive industries. Therefore understanding dynamic behavior of each structural part of the vehicle is a major requirement in improving the NVC characteristics of a vehicle. The main focus of this research is to investigate structural dynamic behavior of a passenger car using modal analysis part by part technique and apply this method to derive the interior noise sources. In the first part of this work computational modal analysis part by part tests were carried out to identify the dynamic parameters of the passenger car. Finite elements models of the different parts of the car are constructed using VPG 3.2 software. Ls-Dyna pre and post processing was used to identify and analyze the dynamic behavior of each car components panels. These tests had successfully produced natural frequencies and their associated mode shapes of such panels like trunk, hood, roof and door panels. In the second part of this research, experimental modal analysis part by part is performed on the selected car panels to extract modal parameters namely frequencies and mode shapes. The study establishes the step-by-step procedures to carry out experimental modal analysis on the car structures, using single input excitation and multi-output responses (SIMO) technique. To ensure the validity of the results obtained by the previous method an inverse method was done by fixing the response and moving the excitation and the results found were absolutely the same. Finally, comparison between results obtained from both analyses showed good similarity in both frequencies and mode shapes. Conclusion drawn from this part of study was that modal analysis part-by-part can be strongly used to establish the dynamic characteristics of the whole car. Furthermore, the developed method is also can be used to show the relationship between structural vibration of the car panels and the passengers' noise comfort inside the cabin.
format Conference or Workshop Item
author Hanouf, Zahir
Faris, Waleed Fekry
Ahmad, Kartini
author_facet Hanouf, Zahir
Faris, Waleed Fekry
Ahmad, Kartini
author_sort Hanouf, Zahir
title An investigation into NVC characteristics of vehicle behaviour using modal analysis
title_short An investigation into NVC characteristics of vehicle behaviour using modal analysis
title_full An investigation into NVC characteristics of vehicle behaviour using modal analysis
title_fullStr An investigation into NVC characteristics of vehicle behaviour using modal analysis
title_full_unstemmed An investigation into NVC characteristics of vehicle behaviour using modal analysis
title_sort investigation into nvc characteristics of vehicle behaviour using modal analysis
publisher Institute of Physics Publishing
publishDate 2017
url http://irep.iium.edu.my/56365/1/56365_An%20investigation%20into%20NVC.pdf
http://irep.iium.edu.my/56365/2/56365_An%20investigation%20into%20NVC_SCOPUS.pdf
http://irep.iium.edu.my/56365/
http://iopscience.iop.org/article/10.1088/1757-899X/184/1/012027
_version_ 1643614900677771264
score 13.211869

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