Aiming to mitigate those unwanted vibrations, this paper introduces the nonlinear energy sinks (NES) to the deep-water jacket offshore platform as a passive control device. Its coupling dynamic model is built with assumed parameters of wave and earthquake loads, and the wave forces of the ...
Thus, the structural stability becomes one of the main considerations in the design of offshore platform. In the past decades, many researchers have devoted themselves into the control algorithm development for structural stability of offshore platform. Based on the physical mechanisms, their ...
A launchable rigid jacket of an offshore platform has a structure including an exterior framing and a plurality of cross-sectional frame sections. The exterior framing has four outside legs, which are spaced apart to define four corners of a trapezoidal cross section. The jacket also includes ...
Offshore Steel PlatformThis paper deals with non-fragile state feedback control problem for offshore steel jacket platform system when subject to nonlinear self-excited hydrodynamic forces, the additive and multiplicative gain variation forms are considered, respectively. A non-fragile state feedback ...
In this paper, rate of signal energy using wavelet packet transform is proposed to detect damages in jacket type offshore platforms. In this regards, experimental dynamic response of a scaled steel jacket type offshore platform was used to calculate the amount of rate of signal energy for define...
For one thing, the equation of jacket offshore platform including inerter NES is developed considering wave loads. For another, the optimal parameters of inerter NES are obtained through Particle Swarm Optimization (PSO) using numerical simulations. Both analytical and numerical results strongly support...
Compared with existing $$H_\infty $$ control methods, the proposed approach makes a significant improvement for dynamic performances of offshore platforms under random wave excitation. 展开 关键词: Offshore platform Active control H_2 /H_\infty $$ H 2 / H ∞ Wave excitation ...
网络导管架式海洋平台结构 网络释义 1. 导管架式海洋平台结构 海洋导管架平台,offs... ... )jacket offshore platform structure导管架式海洋平台结构) offshore platform 导管架式海洋平台 ... www.dictall.com|基于2个网页
China’s offshore oil and gas production, with great growth potential, is expected to continue rising over the next few years, the report said. Deep-water jackets serve as foundations for offshore oil and gas platforms. They are ...
1. Apparatus for supporting an offshore drilling and production platform comprising: a jacket adapted to be mounted without guylines in an operative, generally upright position on the sea bottom and to extend upwardly to a location above the mean water level of the sea, the upper end of the...