Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis

Friction stir welding of aluminium alloys widely used in automotive and aerospace application due to its advanced and lightweight properties. The behaviour of FSW joints plays a significant role in the dynamic characteristic of the structure due to its complexities and uncertainties therefore the re...

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Main Authors: Siti Norazila, Zahari, M. S. M., Sani, M., Ishak
Format: Conference or Workshop Item
Language:English
English
Published: EDP Sciences 2017
Subjects:
Online Access:http://umpir.ump.edu.my/id/eprint/14370/1/Finite%20Element%20Modelling%20and%20Updating%20of%20Friction%20Stir%20Welding%20%28FSW%29%20Joint%20for%20Vibration%20Analysis.pdf
http://umpir.ump.edu.my/id/eprint/14370/7/fkm-2017-shahrir-Finite%20element%20modelling.pdf
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author Siti Norazila, Zahari
M. S. M., Sani
M., Ishak
author_facet Siti Norazila, Zahari
M. S. M., Sani
M., Ishak
author_sort Siti Norazila, Zahari
collection UMP
description Friction stir welding of aluminium alloys widely used in automotive and aerospace application due to its advanced and lightweight properties. The behaviour of FSW joints plays a significant role in the dynamic characteristic of the structure due to its complexities and uncertainties therefore the representation of an accurate finite element model of these joints become a research issue. In this paper, various finite elements (FE) modelling technique for prediction of dynamic properties of sheet metal jointed by friction stir welding will be presented. Firstly, nine set of flat plate with different series of aluminium alloy; AA7075 and AA6061 joined by FSW are used. Nine set of specimen was fabricated using various types of welding parameters. In order to find the most optimum set of FSW plate, the finite element model using equivalence technique was developed and the model validated using experimental modal analysis (EMA) on nine set of specimen and finite element analysis (FEA). Three types of modelling were engaged in this study; rigid body element Type 2 (RBE2), bar element (CBAR) and spot weld element connector (CWELD). CBAR element was chosen to represent weld model for FSW joints due to its accurate prediction of mode shapes and contains an updating parameter for weld modelling compare to other weld modelling. Model updating was performed to improve correlation between EMA and FEA and before proceeds to updating, sensitivity analysis was done to select the most sensitive updating parameter. After perform model updating, total error of the natural frequencies for CBAR model is improved significantly.
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spelling UMPir143702017-11-01T02:44:04Z http://umpir.ump.edu.my/id/eprint/14370/ Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis Siti Norazila, Zahari M. S. M., Sani M., Ishak TJ Mechanical engineering and machinery Friction stir welding of aluminium alloys widely used in automotive and aerospace application due to its advanced and lightweight properties. The behaviour of FSW joints plays a significant role in the dynamic characteristic of the structure due to its complexities and uncertainties therefore the representation of an accurate finite element model of these joints become a research issue. In this paper, various finite elements (FE) modelling technique for prediction of dynamic properties of sheet metal jointed by friction stir welding will be presented. Firstly, nine set of flat plate with different series of aluminium alloy; AA7075 and AA6061 joined by FSW are used. Nine set of specimen was fabricated using various types of welding parameters. In order to find the most optimum set of FSW plate, the finite element model using equivalence technique was developed and the model validated using experimental modal analysis (EMA) on nine set of specimen and finite element analysis (FEA). Three types of modelling were engaged in this study; rigid body element Type 2 (RBE2), bar element (CBAR) and spot weld element connector (CWELD). CBAR element was chosen to represent weld model for FSW joints due to its accurate prediction of mode shapes and contains an updating parameter for weld modelling compare to other weld modelling. Model updating was performed to improve correlation between EMA and FEA and before proceeds to updating, sensitivity analysis was done to select the most sensitive updating parameter. After perform model updating, total error of the natural frequencies for CBAR model is improved significantly. EDP Sciences 2017 Conference or Workshop Item PeerReviewed application/pdf en http://umpir.ump.edu.my/id/eprint/14370/1/Finite%20Element%20Modelling%20and%20Updating%20of%20Friction%20Stir%20Welding%20%28FSW%29%20Joint%20for%20Vibration%20Analysis.pdf application/pdf en cc_by http://umpir.ump.edu.my/id/eprint/14370/7/fkm-2017-shahrir-Finite%20element%20modelling.pdf Siti Norazila, Zahari and M. S. M., Sani and M., Ishak (2017) Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis. In: MATEC Web of Conferences: The 2nd International Conference on Automotive Innovation and Green Vehicle (AiGEV 2016) , 2-3 August 2016 , Malaysia Automotive Institute, Cyberjaya, Selangor. pp. 1-11., 90 (01021). ISSN 2261-236X http://dx.doi.org/10.1051/matecconf/20179001021
spellingShingle TJ Mechanical engineering and machinery
Siti Norazila, Zahari
M. S. M., Sani
M., Ishak
Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis
title Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis
title_full Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis
title_fullStr Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis
title_full_unstemmed Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis
title_short Finite Element Modelling and Updating of Friction Stir Welding (FSW) Joint for Vibration Analysis
title_sort finite element modelling and updating of friction stir welding fsw joint for vibration analysis
topic TJ Mechanical engineering and machinery
url http://umpir.ump.edu.my/id/eprint/14370/1/Finite%20Element%20Modelling%20and%20Updating%20of%20Friction%20Stir%20Welding%20%28FSW%29%20Joint%20for%20Vibration%20Analysis.pdf
http://umpir.ump.edu.my/id/eprint/14370/7/fkm-2017-shahrir-Finite%20element%20modelling.pdf
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