Results 1 to 10 of about 126,940 (259)
Calculation method of riser top tension in deep water drilling
Petroleum Exploration and Development, 2015 Through mechanical analysis, a calculation method which meets the requirements of both the riser stability and the bottom over-pull margin was deduced. It was verified by an example of ultra deepwater well in South China Sea, and compared with two other ...
Jin YANG +5 more
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Standardization in building an ANN-based mooring line top tension prediction system
International Journal of Naval Architecture and Ocean Engineering, 2022 ANN-based mooring line top tension prediction systems are trained on ship motion and mooring line top tension time histories from multiple wave states with a certain simulation length.
Daesoo Lee, Seungjae Lee, Jaeyong Lee
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Effect of Top Tension on Vortex-Induced Vibration of Deep-Sea Risers
Journal of Marine Science and Engineering, 2020 With the increase of water depth, the design and use of the top-tensioned risers (TTR) are facing more and more challenges. This research presents the effect of top tension on dynamic behavior of deep-sea risers by means of numerical simulations and ...
Jie Zhang +3 more
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The tension at the top of the animal pole decreases during meiotic cell division. [PDF]
PLoS ONE, 2013 Meiotic maturation is essential for the reproduction procedure of many animals. During this process an oocyte produces a large egg cell and tiny polar bodies by highly asymmetric division.
Setsuko K Satoh +5 more
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Effect of Bass Bar Tension on Modal Parameters of a Violin’s Top Plate
Archives of Acoustics, 2014 Experimental modal analysis of a violin with three different tensions of a bass bar has been performed. The bass bar tension is the only intentionally introduced modification of the instrument.
Ewa B. SKRODZKA +2 more
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VIV Fracture Investigation into 3D Marine Riser with a Circumferential Outside Surface Crack
Shock and Vibration, 2021 Vortex-induced vibration (VIV) is one of the most common dynamic mechanisms that cause damage to marine risers. Hamilton’s variational principle is used to establish a vortex-induced vibration (VIV) model of a flexible riser in which the wake oscillator ...
Jun Liu +5 more
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The Experimental Study of Dynamic Response of Marine Riser under Coupling Effect of Multiparameter
Journal of Marine Science and Engineering, 2023 In order to investigate the dynamic response of a marine riser under the coupling effect of multiparameter, a model experiment of a marine riser was designed and carried out. The main parameters of the model test were divided into riser design parameters
Run Zheng +5 more
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Applied Sciences, 2023 In order to improve the progressive collapse resistance of an RC frame structure with an L-shaped plane under local component failure, X-tension reinforcement and steel trusses are applied to the progressive collapse resistance design. In this paper, the
Yifei Dai, Lei Qin
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Frequency Response Function and Design Parameter Effects of Hydro-Pneumatic Tensioner for Top-Tensioned Riser [PDF]
Processes, 2021 The top-tensioned riser is an important equipment in offshore oil and gas development. The hydro-pneumatic tensioner is an essential device to ensure the safety of the top-tensioned riser. To investigate the dynamic performance of the marine platform hydro-pneumatic tensioner, this paper proposed a first-order Taylor approximation method and created ...
Wuchao Wang +3 more
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Shuitu baochi tongbao, 2023 [Objective] The influences of surface tension fractures caused by coal mining subsidence on the soil quality of cultivated land were analyzed, and the changes in soil nutrients before and after coal mining subsidence were quantified, in order to provide ...
Tingyu Fan +9 more
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