Buckling Of Axially Compressed Imperfect Steel Cones With Local Dents

Ifayefunmi, Olawale Friday and Mahidan, Fairuz Mardhiah and Abu Bakar, Norinni (2020) Buckling Of Axially Compressed Imperfect Steel Cones With Local Dents. International Journal of Mechanical and Production Engineering Research and Development, 10 (3). pp. 10807-10816. ISSN 2249–6890

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Abstract

This paper presents the comparison of the influence of single and multiple local dents on the load carrying capacity of steel conical shell subjected to axial compression. Cones were assumed to be made from 0.5 mm mild steel with geometric parameters characterized by: r1/t = 50, r2/r1 = 2.0, L/r2 = 2.24, β = 12.6°. Result of fourteen test specimens having local dents ranging from 0 to 2 and indent depth of 0.56, 1.12 and 1.68 is presented in the paper with the accompanying numerical results. The results confirm the strong influence of local dents on the buckling load of axial compressed cones. It is clear that increasing the indent depth results in reduction of the cone strength i.e., the larger the imperfection amplitude, the larger the reduction the buckling load of the cone. Furthermore, it can be seen that cone with multiple dents are more sensitive to imperfection as compared to cone with single dents. Lastly, it can be seen that in most cases, for cone having thinness ratio of 50, two local dents on the mid-surface is enough to produce the largest reduction in the load carrying capacity of the shell as evident for imperfection amplitude A = 0.56 and 1.68. However, as the thinness ratio increase (i.e., r1/t = 250), the greatest reduction in the buckling load of the cone is produced by thehighest number of local dents.

Item Type: Article
Uncontrolled Keywords: Axial compression, Buckling, Imperfection sensitivity, Single/multiple load indentation, Steel cone
Divisions: Faculty of Mechanical and Manufacturing Engineering Technology
Depositing User: Sabariah Ismail
Date Deposited: 22 Sep 2021 13:24
Last Modified: 22 Sep 2021 13:24
URI: http://eprints.utem.edu.my/id/eprint/25294
Statistic Details: View Download Statistic

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