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Ultimate strength of initially deflected plate under longitudinal compression: Part I = An advanced empirical formulation

Kim, DK; Poh, BY; Lee, JR; Paik, J; (2018) Ultimate strength of initially deflected plate under longitudinal compression: Part I = An advanced empirical formulation. Structural Engineering and Mechanics , 68 (2) pp. 247-259. 10.12989/sem.2018.68.2.247. Green open access

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Abstract

In this study (Part I), an advanced empirical formulation was proposed to predict the ultimate strength of initially deflected steel plate subjected to longitudinal compression. An advanced empirical formulation was proposed by adopting Initial Deflection Index (IDI) concept for plate element which is a function of plate slenderness ratio (Beta) and coefficient of initial deflection. In case of initial deflection, buckling mode shape, which is mostly assumed type in the ships and offshore industry, was adopted. For the numerical simulation by ANSYS nonlinear finite element method (NLFEM), with a total of seven hundred 700 plate scenarios, including the combination of one hundred (100) cases of plate slenderness ratios with seven (7) representative initial deflection coefficients, were selected based on obtained probability density distributions of plate element from collected commercial ships. The obtained empirical formulation showed good agreement (R2 = 0.99) with numerical simulation results. The obtained outcome with proposed procedure will be very useful in predicting the ultimate strength performance of plate element subjected to longitudinal compression.

Type: Article
Title: Ultimate strength of initially deflected plate under longitudinal compression: Part I = An advanced empirical formulation
Open access status: An open access version is available from UCL Discovery
DOI: 10.12989/sem.2018.68.2.247
Publisher version: http://www.techno-press.com/content/?page=article&...
Language: English
Additional information: This version is the author accepted manuscript. For information on re-use, please refer to the publisher’s terms and conditions.
Keywords: ultimate strength, plate, unstiffened panel, initial deflection, empirical formulation
UCL classification: UCL > Provost and Vice Provost Offices
UCL > Provost and Vice Provost Offices > UCL BEAMS
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science
UCL > Provost and Vice Provost Offices > UCL BEAMS > Faculty of Engineering Science > Dept of Mechanical Engineering
URI: https://discovery.ucl.ac.uk/id/eprint/10060945
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