The application of reliability methods in the design of stiffened FRP composite panels for marine vessels

Abstract

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Failure investigation of top-hat composite stiffened panels

“…This makes modelling composites complex and often nonlinear. Considerable research has been carried out for the linear static, dynamic, buckling and failure analyses of stiffened plates/shells using finite element approaches (Prusty and Satsangi 2001a, 2001b, 2001c, 2001dPrusty 2003;Prusty et al 2005;Blake et al 2009;Hayman et al 2011;Tsouvalis and Garganidis 2011;Yang et al 2011;Hashim et al 2011;Gaiotti et al 2012) using an arbitrarily oriented stiffener formulation which was further expanded to geometric non-linear analysis (Ojeda et al 2007). Full scale experiments on the failure investigation of stiffened and unstiffened composite panels under transverse loading for the failure strains and loads were carried out by Stadke and Prusty (2004); whereas single level delamination and debonding of stiffener to plate was investigated using fracture mechanics approach (Mikulik et al 2006(Mikulik et al , 2008.…”

The Application of Reliability Based Optimization of Tophat Stiffened Composite Panels Subject to Bi-Directional Buckling Loads

“…Yang et al [26] explored the use of stochastic approach to the design of stiffened composite panels in composite ship structures under in-plane load. And recently, Blake et al [27] performed a reliability analysis on the tophat stiffened panel using grillage method.…”

Modelling the different mechanical response and increased stresses exhibited by structures made from natural fibre composites

“…To counteract these issues there is the development of methods that provide a rapid assessment of structures such as Vescovini and Bisagni [11]. A number of authors: Maneepan et al [12], Sobey et al [13], [14], [15], [16], [17] Blake et al [18], Yang et al [19], Xue et al [20] and Liu et al [10], utilise the Navier grillage method to assess stiffened structures in applications which require computationally intensive methodologies. The grillage method provides a rapid assessment of commonly used top-hat stiffened structures which reduce the mass of large composite structures and compensate for the poor torsional rigidity.…”