Behaviour of reinforced thermoplastic pipe under combined bending and external pressure

Review of the Development of an Unbonded Flexible Riser: New Material, Types of Layers, and Cross-Sectional Mechanical Properties

“…Composites usually consist of matrix material and reinforcing material (usually fibers) and have been used for many years in the field of offshore engineering. They are usually structured in the form of a regular cylindrical shell structure and are commonly used in structures such as reinforced thermoplastic pipes and marine hoses [ 157 , 158 ]. The structural properties of composites are more complex than those of isotropic materials and are usually simplified to anisotropic materials for treatment and analysis.…”

Elastic buckling of stiffened panels in ships under bi-axial compression

“…Previous studies on buckling are witnessed: Van der Neut (1983) studied the overall buckling of Z-stiffened panels; Hughes and Ma (1996) studied the beam-column type flexural buckling, and torsional buckling of stiffeners; Yao et al (1997) performed a series of elasto-plastic large deflection analyses on stiffened panels with flat-bar stiffeners; Fujikubo and Yao (1999) studied the elastic buckling strength by introducing interaction between stiffener and plate including welding residual stress; Byklum and Amdahl (2002) analysed the coupled buckling and post-buckling of stiffened plates; Danielson and Wilmer (2004) studied the coupled buckling of stiffened plate with bulb-plate stiffeners; Zheng and Hu (2005) studied the tripping of thin-walled stiffeners in the axially compressed stiffened panel; Kim et al (2009) studied the buckling and ultimate strength of perforated plate panels both experimentally and numerically; Lokshin et al (2009) studied the effect of shear on deflection and buckling of beams and plates; Wang et al (2009) studied buckling and ultimate strength of plates with openings; Chaithanya et al (2010) studied the effect of distortion on the ultimate strength of stiffened panels; El-Sawy and Martini (2010) studied the stability of bi-axially loaded square plates with single central holes; Tsouvalis and Garganidis (2011) investigated the effect of delamination on buckling of composite plates; Lokshin et al (2013) studied the critical buckling strength of ships' grillages considering corrosion; Ma et al (2013) studied the elastic lateral distortional buckling of cantilever mono-symmetrical I-beams; Rahbar-Ranji (2013) studied the elastic buckling strength of longitudinally stiffened plates with flat-bar stiffeners; Ifayefunmi (2014) performed interactive buckling tests on steel cones subjected to axial compression and external pressure; Rajaguru et al (2014) performed buckling analysis on the historic Medway Queen paddle steamer ship; Bai et al (2015) investigated the behaviour of reinforced thermoplastic pipe under combined bending and external pressure; Rahbar-Ranji and Zarookian (2015) investigated the ultimate strength of stiffened plates with a transverse crack. For design assessments, ultimate strength concept is usually used such as discussed by Paik et al (2008) and Zhang (2016), and Paik and Thayamballi (2003) have reviewed and described both fundamental...…”

Investigation on the bending behaviors of reinforced thermoplastic pipes using a strain energy equivalence method and a continuum damage numerical model

“…The reliability of the model has been verified by experimental methods. Chan and Demirhan [ 17 ] presented two theoretical methods for calculating the bending stiffness of RTPs based on the laminate shell theory. However, the current theoretical methods mainly rely on solving complex stress functions.…”