... the top boundary causes spurious effects on wave deformation. In this study, the size of numerical cells is determined through preliminary tests to ensure an appropriate balance between predictive accuracy and computational effort. In GNS, orthogonal staggered cells with the uniform size of Δ x...

... on elastic-plastic fracture mechanics and plasticity theory was developed for that purpose. The analysis allows for load or deformation control situations. The results are shown in terms of curves of critical defect size versus the controlling variable, i.e., load or deformation. For each one of the several...

... to yield reliable predictions. Lastly, the finite element method was used to apply the wave-induced loads onto a comprehensive finite element structural model of the platform, yielding deformations and stresses. Numerical grid on legs and hull of the rig and on the ocean bottom Higher local...

...Yoshikazu Hashimoto; Naoto Hagiwara; Hiroshi Yatabe; Noritake Oguchi In this paper, the deformability of line pipe with local metal loss was examined. A full-scale experiment and a finite element (FE) analysis were carried out for line pipe with local metal loss subjected to an axial compressive...

... and time correlation between the local forces. Accordingly, the model provides a tool to consider the nonsimultaneous characteristics of the local ice pressures while assessing the total ice force. 20 03 2006 14 09 2006 ice deformation offshore installations marine engineering...

... equilibrium conditions, constitutive equations and geometrical relations, leads to the solution of the problem in terms of the loads supported by the layers and deformation components of a flexible riser subjected to the above mentioned combined loads. All the modeling hypotheses are highlighted in the work...

...Hiroshi Yatabe; Naoki Fukuda; Tomoki Masuda; Masao Toyoda In this study, the deformability of high-grade pipelines subjected to an axial compressive deformation was experimentally and analytically discussed. Six cases of axial compression experiments with high-grade line pipe were carried out...

... methodology, which solves redesign problems of complex structures with, among others, free vibration, static deformation, and forced response amplitude constraints. The existing algorithm, referred to as the Incremental Method is improved in this paper for problems with static and forced response amplitude...

... with a spectral/ hp element method. The computational results were compared with experiments undertaken in the towing tank facility of the Department of Aeronautics of Imperial College. fluid dynamics petroleum industry flexible structures deformation load distribution mechanical engineering...