... suzuki vector upstream oil & gas thruster tether motion analysis artificial intelligence deformation numerical motion analysis rov cable tether model motion equation vehicle boundary condition torsion experiment coordinate system tether cable tether profile configuration...

... ABSTRACT Flexible pipes, which can be divided into bonded and unbonded types, have been applied in the oil industry for years. An unbonded structure, the so-called flexible steel pipe, can drastically hoist the resistance of the pipe to pressure, tension and torsion and in the meanwhile, could...

... bending and torsional cases for a typical 10000 TEU container ship. The results are representative and can be of reference values for structural evaluations for similar sized container ships. INTRODUCTION Currently, container ships are getting larger, and their structural strengths are the major...

... ABSTRACT This paper proposes a new approach to determine and verify design waves using the combined design load parameters (DLP) for semi-submersible with twin pontoon type, which can present the combination of the split force with torsion or longitudinal shear force. Several methodologies...

... of the deck opening corresponding to the allowable level of combined stresses and deformations under torsion in the deck structures, at early design stages. Introduction Increased deformations of deck structures typically appear in ships with wide-open decks. These deformations can lead to an increase...

.... The response characteristics depend on Reynolds number, mass ratio, inertia ratio, structural damping ratio, reduced velocity for both motions transverse and in rotation. The free angular and translational responses of the square cylinder mounted on torsional and translational springs in cross-flow...

... simulation step size cable model calculation tangent direction node position curvature stiffness oscillation time step riser torsion node point Accelerating Execution Speeds for Lumped Mass Cable Models Bradley J. Buckham , Ryan Nicoll* Department of Mechanical Engineering, University...

... Abstract The ships with wide hatches may have the numerous cracks appear in the deck structures due to the high tensions of the hull. The marine ships withstand to simultaneously common longitudinal vertical bending, horizontal bending and torsion. At the same time this is still unknown how...

...The undrained bearing capacity of shallow foundations subjected to three-dimensional loading including torsion Saeed Dehghanpoor Abyaneh, Abiola Ojo, Alasdair Maconochie and Ali Haghighi Technip Aberdeen, UK ABSTRACT This paper presents a three-dimensional numerical investigation of the undrained...

... Abstract Due to the limited enclosed area, container ships with large openings in deck are subject to torsional failure as well as bending failure. Specifically, both moments contribute measurably to the ultimate strength in the scenario of ships travelling in oblique seas. This paper focuses...

... tests of an ultra large container ship flexible model are conducted in different operating conditions. The focus is made on the measurement of the bow flare impact loads that drive the whipping response, and on the improved modeling and measurement of the ship torsional behavior. To this purpose, a new...

... will be optimized simultaneously. This could happen but should be verified in future. The ship hull's horizontal bending, vertical bending, torsion stiffness is optimized through a multi-objective problem for a given weight in present first step. To reduce computational effort, the Kriging approximation model based...

... ABSTRACT: The importance of mathematical models for ship hydroelastic analysis grows with the design of ever larger container ships which have specific design and exploitation characteristics. Compared with other merchant ships, they are characterized by relatively lower torsional stiffness...

... Collapse Analysis of Container Ship Model under Combined Bending and Torsion Applying Idealized Structural Unit Method Zhiyong Pei*, Chu Gao*, Yoshiteru Tanaka Satoyuki Tanaka Shigenobu Okazawa Kazuhiro Iijima Masahiko Fujikubo Tetsuya Yao* * Tsuneishi Shipbuilding Co., LTD, Fukuyama, Hiroshima...

... on the preliminary hammering tests and decay tests. model test nonlinear reservoir characterization procedure structural model calculation global hydroelastic ship response comparison backbone equation simulation artificial intelligence conversion matrix torsion numerical model internal section...

... analysis tools for springing and whipping. In the present study, a model system for measurement of torsion springing and whipping which is composed of a backbone and segmented container ship model in which natural frequencies of bending and torsion are matched using an open section beam. A series of model...

..., torsion, bending, compression, are presented, discussing merits and limits. Then the approach is applied to cases of potential interest for the oil&gas industry, that is a pipeline conveying fluid at high pressure and subjected to the action of secondary loads such as bending and tension. First...

... ABSTRACT The purpose of this paper is to provide a general solution of spatial warping curved beams under multiple loads based on the existed theory. The transverse shear deformation and torsion-related warping effects are taken into account. In natural coordinates, equilibrium, geometrical...

... to the stress state, it is necessary to perform a specific test plan. As described elsewhere (Coppola and Folgarait, 2007) different tests were designed and executed at CSM, comprising tensile on round smooth and notched (RNB) specimens, torsion, flattening (Fig. 4) and bending tests on rectangular section...

... (equilibrium) analyses alone. The cable is modeled as a one-dimensional elastic continuum that accounts for tension, two-axis bending, and torsion. External forces including weight, buoyancy, fluid drag and inertia are included. The three-dimensional shape of the cable is predicted, as time evolves...