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Frequency response function (FRF) based updating of a laser spot welded structure

Mohd Syazwan, Mohd Zin and M. N., Abdul Rani and Mohd Azmi, Yunus and M. S. M., Sani and W. I. I., Wan Iskandar Mirza and Ahmad Azlan, Mat Isa (2018) Frequency response function (FRF) based updating of a laser spot welded structure. In: International Conference on Electrical, Electronics, Materials and Applied Science 2017, 22-23 December 2017 , Swami Vivekananda Institute of Technology (SVIT)Secunderabad, Telangana; India. , 1952. ISSN 0094-243X ISBN 978-073541647-5

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Abstract

The objective of this paper is to present frequency response function (FRF) based updating as a method for matching the finite element (FE) model of a laser spot welded structure with a physical test structure. The FE model of the welded structure was developed using CQUAD4 and CWELD element connectors, and NASTRAN was used to calculate the natural frequencies, mode shapes and FRF. Minimization of the discrepancies between the finite element and experimental FRFs was carried out using the exceptional numerical capability of NASTRAN Sol 200. The experimental work was performed under free-free boundary conditions using LMS SCADAS. Avast improvement in the finite element FRF was achieved using the frequency response function (FRF) based updating with two different objective functions proposed.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Frequency response function (FRF); Laser spot; Finite element (FE)
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs. Neng Sury Sulaiman
Date Deposited: 11 Feb 2019 04:48
Last Modified: 08 Jul 2019 02:53
URI: http://umpir.ump.edu.my/id/eprint/23086
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