Results 81 to 90 of about 1,280 (210)

A Method of Top Tension Optimization of Drilling Riser-conductor System

Shiyou jixie, 2015
With the exploration of deep water towards ultradeep water,the harsh marine environment could lead to riser-conductor stability issues like buckling and alternating stress failure.The effective axial stress equation of the whole riser-conductor system ...
Deng Song, Fan Honghai, Shen Weige, Liu Jinge, Liu Yuhan, Niu Jun   +5 more
doaj  

Sustainable seabed mining: guidelines and a new concept for Atlantis II Deep

, 2012
The feasibility of exploiting seabed resources is subject to the engineering solutions, and economic prospects. Due to rising metal prices, predicted mineral scarcities and unequal allocations of resources in the world, vast research programmes on the ...
Shan, Shiliang, Elosta, Hany, Egorov, Lev, Yang, Kyung-Kyu, Kudla, Nicole L.   +4 more
core  

Electro-mechanical vibration control of functionally graded marine risers by a piezoelectric meta-structure design

Applied Ocean Research
In this paper, a novel electro-mechanical meta-riser structure is designed aiming to suppress its vibration and wave propagation. The riser is made of porous functionally graded material (FGM), and is periodically attached with piezoelectric layers, each
Feng Liang, Zhi-Qiang Chen
doaj   +1 more source

Study on CTOD Fracture Toughness of Welded Joint of X80 Marine Drilling Riser

, 2011
This document demonstrates CTOD (crack tip opening displacement) tests at0°Cof welded joint in X80 marine drilling riser in accordance with the BS 7448 standard.
Peng Wang, En Dang, Mei Juan Hu
core   +1 more source

Influence of Buoyancy Tank on Axial Vibration of Freestanding Rigid Riser

Shiyou jixie, 2017
The complex marine environment easily leads to periodic changes in buoyancy of buoyancy tank on freestanding riser system, resulting in axial vibration of rigid riser. When the buoyancy tank frequency is the same or close to the inherent frequency of the
Zhou Xingkun, Duan Menglan
doaj  

Response Design and Experimental Analysis of Marine Riser Buoy Observation System Based on Fiber Optic Sensing Under South China Sea Climatic Conditions

Journal of Marine Science and Engineering
Marine risers, critical structures connecting underwater production systems and surface floating platforms, stand freely in water and endure extremely complex marine environmental loads.
Lei Liang, Shuhan Long, Xianyu Lai, Yixuan Cui, Jian Gu   +4 more
doaj   +1 more source

Dynamic analysis of the subsea production system with lazy-wave risers attached to FPSO. [PDF]

PLoS One, 2023
Zhang D, Zhao B, Zhu K, Jiang H.
europepmc   +1 more source

Sensitivity Analysis of a Flexible Marine Riser Using Sobol’s Method

, 2017
In this research, sensitivity analysis of upper and lower end angles in addition to the midpoint displacement of the flexible marine riser with respect to structural parameters such as: uniform mass per unit length, external diameter and the tension of ...
Robert G. Parker, Arastou Azimi, Firooz Bakhtiari-Nejad   +2 more
core   +1 more source

Study on Fatigue Crack Growth Prediction and Machine Learning Correction for Deepwater Risers

Journal of Marine Science and Engineering
Under long-term marine environmental loading, deep-water risers are highly susceptible to fatigue damage, and the accumulation of local damage may lead to global structural failure. In this study, the fatigue damage mechanism and crack growth behavior of
Fucheng Wang, Yong Yang, Baolei Cui, Di Wang   +3 more
doaj   +1 more source

Dynamic analysis of a marine riser

, 1993
The problem of the dynamic analysis of a marine riser is considered in this thesis. The equations of motion for a marine riser undergoing large three dimensional deflections and rotations are derived using modal discretization approach.
Guo, Yongzhi
core