Yang, X ORCID: 0000-0002-0788-668X, Ouyang, H ORCID: 0000-0003-0312-0326, Guo, X and Li, D
(2019)
Finite Element Modelling and Damage Detection of Seam Weld.
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Abstract
© Springer Nature Singapore Pte Ltd 2020. Seam welds are widely used in assembled structures for connecting components. However, the dynamic effects of a seam weld are often difficult to characterise in numerical models for several reasons: (1) it is often not wise to build a fine mesh on the seam line which will add considerable computational cost for a structure with many welds, (2) the mechanical properties of weld materials are not well known; (3) sometimes some geometric information about welds is not known beforehand. In this work, the finite element model of a welding connection part is developed by employing CSEAM element in NASTRAN and its feasibility for representing a seam weld is investigated. Based on this result, a damage detection method by updating the properties of the built CSEAM elements is also proposed for welding quality assurance. The damage takes the form of a gap in the weld which causes a sharp change of model strain energy at the edges of the gap for certain vibration modes. Specifically, the model strain energy shape is used as the objective function. A Kriging model is introduced for efficiency and simulation of a T-shaped welded plate structure to demonstrate the effectiveness of this method.
Item Type: | Conference or Workshop Item (Unspecified) |
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Uncontrolled Keywords: | 7 Affordable and Clean Energy |
Depositing User: | Symplectic Admin |
Date Deposited: | 25 Jul 2019 15:44 |
Last Modified: | 15 Mar 2024 05:43 |
DOI: | 10.1007/978-981-13-8331-1_4 |
Related URLs: | |
URI: | https://livrepository.liverpool.ac.uk/id/eprint/3050307 |