Influence of multiple load indentation on the mechanical and material behaviour of steel cone-cylinder under axial compression

Ifayefunmi, Olawale Friday and Dhar Malingam, Sivakumar and Sazali, Amir Hafiz (2021) Influence of multiple load indentation on the mechanical and material behaviour of steel cone-cylinder under axial compression. Materials Research Express, 8 (12). pp. 1-10. ISSN 2053-1591

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Abstract

The first set of test data on axial collapse of cone-cylinder assembly having multiple load indentation (MLI) and its accompanying numerical studies is presented in this paper. Two perfect and two imperfect steel cone-cylinders were prepared in pairs. The cone-cylinder models have the following geometric parameters: cone radius of 40 mm, cylinder radius of 70 mm,wall thickness of 0.5 mm and cone angle of 16.7°. Cone and cylinder part were combined using Metal Inert Gas (MIG) welding technique. Results show that the repeatability of the experiment was good (3% for the perfect and 7% for the imperfect). Also, numerical prediction tends to reproduce the test data with good accuracy. The error between both approches ranges from 1% to −8%. Furthermore, the influence of geometric parameters are also significant in determining the collapse load of this type of structure. Finally, the worst multiple load indentation (WMLI) was explored for steel cone-cylinders assembly using different number of load indentations. Results indicate that as the number of indents increases, the sensitivity of the cone-cylinder models to imperfection also increases. However, at different imperfection amplitude, A, two regions were observed; (i) the region where cone-cylinder with N = 8 is more sensitive (A < 1.5), and (ii) the region where N = 4 produce the worst imperfection (1.5 < A ≤ 1.68).

Item Type: Article
Uncontrolled Keywords: Material behaviour, Multiple load indentation, Steel cone-cylinder, Axial compression, Buckling
Divisions: Faculty of Mechanical and Manufacturing Engineering Technology
Depositing User: Sabariah Ismail
Date Deposited: 17 Mar 2022 16:04
Last Modified: 22 Jun 2023 16:26
URI: http://eprints.utem.edu.my/id/eprint/25781
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