The ISSC 2022 committee III.1-Ultimate strength benchmark study on the ultimate limit state analysis of a stiffened plate structure subjected to uniaxial compressive loads

An empirical formula to assess ultimate strength of initially deflected plate: Part 2 = combined longitudinal compression and lateral pressure

“…From the previous investigation by Khan and Zhang (2011), 10 to 13% of ultimate strength differences may be caused by residual stress. Details on the effect of initial imperfection, such as initial deflection shape, residual stress, etc., may be referred to (Cui and Mansour, 1998;Guedes Soares, 1988;Khan and Zhang, 2011;Li et al, 2021b;Paik et al, 2004;Raviprakash et al, 2012;Sadovský et al, 2005;Ueda et al, 1992;Yao and Fujikubo, 2016b).…”

“…Researchers have conducted various studies to estimate the ultimate strength capacity of a single-loaded unstiffened and stiffened structure, i.e. longitudinal compression, by experimental (Chen et al, 2004;Faulkner, 1977;Gordo and Soares, 2008;Kim et al, 2021;Kong et al, 2020;Manuel Gordo and Guedes Soares, 2011;Paik et al, 2020;Shanmugam et al, 2014;Xu and Soares, 2012), numerical (Fujikubo et al, 2005;Georgiadis et al, 2021;Kim et al, 2022;Li et al, 2021b;Liu et al, 2020;Paik et al, 2008a, b, c;Paik et al, 2009;Paik and Seo, 2009a, b;Ringsberg et al, 2021), empirical (Li et al, 2021a)and analytical methods (Benson et al, 2015;Brubak et al, 2013;Chen, 2003;Li et al, 2019). In particular, Paik (2018), Yao and Fujikubo (2016a), Hughes and Paik (2010) provided well-established knowledge to understand the complex structural behaviour of ships and offshore structures in the ultimate limit state (ULS).…”

Ultimate strength characteristics of unstiffened cylindrical shell in axial compression

“…The present study focuses on the Ultimate Limit State (ULS), which concerns the maximum loadcarrying capacity of the structures and is a typical assessment criterion in the initial design [12][13][14]. Operating in a marine environment, the cylindrical shell structures need to withstand the environmental loads in the form of axial loads (𝑁𝑁 𝑚𝑚 ), overturning bending moment (𝑀𝑀 𝑧𝑧 or 𝑀𝑀 𝑦𝑦 ), torsion (𝑀𝑀 𝑚𝑚 ) and external pressure (𝑝𝑝 ℎ𝑦𝑦𝑦𝑦𝑦𝑦𝑦𝑦 or 𝑝𝑝 𝑤𝑤𝑤𝑤𝑤𝑤𝑦𝑦 ) (Figure 1).…”

A comparison of geometric imperfection models for collapse analysis of ship-type stiffened plated grillages

“…structures.Very recently, a benchmark study involving seventeen participants worldwide demonstrated the uncertainty in predicting the ultimate capacity, failure mode and location of a stiffened plated grillage[45]. The modelling of initial distortion was suggested as one of the critical factors, which differed between each participant.…”