The application of non-deterministic model updating method of a complex jointed structure using central composite design based meta-model

M. A. S., Aziz Shah and M. A., Yunus and M. N., Abdul Rani and M. S. M., Sani (2020) The application of non-deterministic model updating method of a complex jointed structure using central composite design based meta-model. In: IOP Conference Series: Materials Science and Engineering, International Conference on Engineering Science and Technology 2019 , 29-30 August 2019 , Lampung, Indonesia. pp. 1-9., 807 (012036). ISSN 1757-8981 (Print), 1757-899X (Online)

Pdf (Open access)
The application of non-deterministic model updating method.pdf
Available under License Creative Commons Attribution.

Download (699kB) | Preview


Finite element (FE) model of a structure is highly depended on idealising and simplification of model, however, the model may not truly represent the physical structure. The application of FE model updating is advocated to modify FE model of structure in order to acquired better correlation between the predicted and measured structure response. Nevertheless, for complex jointed structure, a FE model is containing a very large degree of freedoms that may contribute to high computational time. Therefore, this paper presents the application of response surface method in non-deterministic model updating using central composite design (CCD) sampling for improving the efficiency of a finite element model of a laser stitch welded structure. In this study, FE model of the structure is developed using CQUAD4 shell elements and ACM2 element connectors been used to representing the laser stitch weld joints. For the measured data, experimental modal analysis was performed using LMS SCADAS and conducted under free-free boundary conditions. In the model updating, the minimisation of uncertainties parameters in the FE model is based on the objective function that is formed from the residuals between the FE and experimental natural frequencies. The results show that the response surface method using CCD sampling is efficient to be used in FE model updating because it is capable of improving the accuracy of the initial FE model.

Item Type: Conference or Workshop Item (Lecture)
Additional Information: Indexed by Scopus
Uncontrolled Keywords: Finite element; Central composite design (CCD); Weld joints
Subjects: T Technology > TJ Mechanical engineering and machinery
Faculty/Division: Faculty of Mechanical Engineering
Depositing User: Mrs Norsaini Abdul Samat
Date Deposited: 11 May 2021 02:40
Last Modified: 11 May 2021 02:40
Download Statistic: View Download Statistics

Actions (login required)

View Item View Item