Author
Daniele Dessi
Bio: Daniele Dessi is an academic researcher from National Research Council. The author has contributed to research in topics: Slamming & Design load. The author has an hindex of 3, co-authored 3 publications receiving 242 citations.
Topics: Slamming, Design load, Computer technology, Shipbuilding
Papers
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Lloyd's Register1, National University of Singapore2, Istanbul University3, SINTEF4, Delft University of Technology5, Osaka University6, Technical University of Denmark7, University of Zagreb8, Technical University of Lisbon9, National Technical University of Athens10, Germanischer Lloyd11, University of Strathclyde12
TL;DR: In this paper, the authors present a review of the recent advances in the assessment of loads for ships and offshore structures with the aim to draw the overall technological landscape available for further understanding, validation and implementation by the academic and industrial communities.
226 citations
TL;DR: In this paper, the authors assess the methods used for the evaluation of wave-induced loads on ships examining analytical, numerical and experimental approaches, with reference to accuracy, modeling nonlinear effects, ease of modeling and coupling with structural assessment procedures.
59 citations
TL;DR: In this article, the statistical properties of the slamming impact process were analyzed with the help of experimental data acquired in the towing tank on a high speed ferry model, where the physical model is a segmented-hull with a flexible backbone-beam equipped with sensors to measure the wetness of hull sections and strain gauges to estimate the induced vertical bending moment.
19 citations
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TL;DR: In this article, the authors summarize the motivations behind utilizing the smoothed particle hydrodynamics (SPH) method in an industrial context, as well as deriving general conclusions regarding its assets and limitations and stressing the remaining challenges in order to make it an hand-on computational tool.
296 citations
TL;DR: There are three types of control schemes, namely passive control, semi-active control, and active control, to deal with vibration of offshore platforms as discussed by the authors, i.e., passive control schemes and several semiactive control schemes.
Abstract: Offshore platforms are widely used to explore, drill, produce, storage, and transport ocean resources and are usually subject to environmental loading, such as waves, winds, ice, and currents, which may lead to failure of deck facilities, fatigue failure of platforms, inefficiency of operation, and even discomfort of crews. In order to ensure reliability and safety of offshore platforms, it is of great significance to explore a proper way of suppressing vibration of offshore platforms. There are mainly three types of control schemes, i.e., passive control schemes, semi-active control schemes, and active control schemes, to deal with vibration of offshore platforms. This paper provides an overview of these schemes. Firstly, passive control schemes and several semi-active control schemes are briefly summarized. Secondly, some classical active control approaches, such as optimal control, robust control, and intelligent control, are briefly reviewed. Thirdly, recent advances of active control schemes with delayed feedback control, sliding model control, sampled-data control, and network-based control are deeply analyzed. Finally, some challenging issues are provided to guide future research directions.
186 citations
TL;DR: In this paper, the authors experimentally study the water entry of curved rigid wedges and find that between 60 and 80% of the impact energy is consistently transferred to the risen water, which accounts for the formation of the pile-up and the spray jets.
72 citations
TL;DR: An analysis indicates a relatively low level of technology readiness of tools and concepts presented in academic literature, which signifies a need to move beyond the conceptual stages toward demonstration and validation in realistic, operating environments.
72 citations
TL;DR: In this article, the slamming behavior of a large high-speed catamaran was investigated through the analysis of full-scale trials data, and an automatic slam identification algorithm was developed, considering the measured rate of change of stress in the ship's structure coupled with the vessel's pitch motion.
Abstract: The slamming behaviour of a large high-speed catamaran has been investigated through the analysis of full-scale trials data. The US Navy conducted the trials in the North Sea and North Atlantic region on a 98 m wave piercer catamaran, HSV-2 Swift, designed by Revolution Design Pty Ltd and built by Incat Tasmania. For varying wave headings, vessel speeds and sea states the data records were interrogated to identify slam events. An automatic slam identification algorithm was developed, considering the measured rate of change of stress in the ship’s structure coupled with the vessel’s pitch motion. This has allowed the slam occurrence rates to be found for a range of conditions and the influence of vessel speed, wave environment and heading to be determined. The slam events have been further characterised by assessing the relative vertical velocity at impact between the vessel and the wave. Since the ship was equipped with a ride control system, its influence on the slam occurrence rates has also been assessed.
72 citations