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Orlandi, Andrea (author), Calastrini, Francesca (author), Kalikatzarakis, Miltiadis (author), Guarnieri, Francesca (author), Busillo, Caterina (author), Coraddu, A. (author)This study introduces a novel framework of metocean prediction and ship performance models that integrate multiple layers of modeling to evaluate the environmental impact of ship emissions. It enables scenario simulations that assess a ship's performance, estimates pollutant emissions, and simulate the fate of these pollutants in the...journal article 2024
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Ilardi, Davide (author), Kalikatzarakis, Miltiadis (author), Oneto, Luca (author), Collu, Maurizio (author), Coraddu, A. (author)Due to increasing environmental concerns and global energy demand, the development of Floating Offshore Wind Turbines (FOWTs) is on the rise. FOWTs offer a promising solution to expand wind farm deployment into deeper waters with abundant wind resources. However, their harsh operating conditions and lower maturity level compared to fixed...journal article 2024
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Martinelli, Cristiano (author), Coraddu, A. (author), Cammarano, Andrea (author)Meta-heuristic optimisation algorithms are high-level procedures designed to discover near-optimal solutions to optimisation problems. These strategies can efficiently explore the design space of the problems; therefore, they perform well even when incomplete and scarce information is available. Such characteristics make them the ideal...conference paper 2024
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Coraddu, A. (author), Oneto, Luca (author), Walker, J.M. (author), Patryniak, Katarzyna (author), Prothero, Arran (author), Collu, Maurizio (author)The global installed capacity of floating offshore wind turbines is projected to increase by at least 100 times over the next decades. Station-keeping of floating offshore renewable energy devices is achieved through the use of mooring systems. Mooring systems are exposed to a variety of environmental and operational conditions that cause...journal article 2024
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Kalikatzarakis, Miltiadis (author), Coraddu, A. (author), Atlar, Mehmet (author), Gaggero, Stefano (author), Tani, Giorgio (author), Oneto, Luca (author)For propeller-driven vessels, cavitation is the most dominant noise source producing both structure-borne and radiated noise impacting wildlife, passenger comfort, and underwater warfare. Physically plausible and accurate predictions of the underwater radiated noise at design stage, i.e., for previously untested geometries and operating...journal article 2023
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Mylonopoulos, F.M. (author), Polinder, H. (author), Coraddu, A. (author)This paper presents a comprehensive literature review of the state-of-the art modeling and optimization methods for the power and propulsion systems of ships. Modeling is a tool to investigate the performance of actual systems by running simulations in the virtual world. There are two main approaches in modeling: physics-based and data-driven...journal article 2023
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Patryniak, K. (author), Collu, M. (author), Coraddu, A. (author)Floating Offshore Wind Turbines (FOWT) can be installed at the sites of the most abundant wind resource. However, the design uncertainties and risks must be reduced to make them economically competitive. The design and optimisation methodologies for FOWT support structures adopted up to date tend to follow a sequential analysis strategy....journal article 2023
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Pinasco, Silvia (author), Lagomarsino, Sergio (author), Carocci, Caterina (author), Coraddu, A. (author), Oneto, Luca (author), Cattari, Serena (author)Seismic events in Italy and worldwide have highlighted the high vulnerability of unreinforced masonry (URM) structures in small historical centres. A key feature of these settlements is to be mostly composed of buildings in aggregate, i.e., interconnected by a more or less structurally effective connection. The seismic assessment of such...conference paper 2023
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Latorre, Alejandro (author), Soeiro, Thiago B. (author), Geertsma, R.D. (author), Coraddu, A. (author), Polinder, H. (author)This article gives an overview of challenges in primary distribution, protections, and power scalability for shipboard dc systems. Given that dc technology is in development, several aspects of shipboard systems have not yet been sufficiently devised to ensure the protection and efficiency demanded. Several issues in dc systems arise from the...journal article 2023
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McMorland, J. (author), Collu, M. (author), McMillan, D. (author), Carroll, James (author), Coraddu, A. (author)As new offshore wind development sites move further from shore and existing sites enter their post-subsidy operating period, it is expected that operational expenditure (OpEx) will increase. In order to overcome these challenges, a more flexible and cost-effective maintenance solution is needed. One such solution is opportunistic maintenance ...review 2023
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Ojo, Adebayo (author), Collu, Maurizio (author), Coraddu, A. (author)The drive for the cost reduction of floating offshore wind turbine (FOWT) systems to the levels of fixed bottom foundation turbine systems can be achieved with creative design and analysis techniques of the platform with free-form curves to save numerical simulation time and minimize the mass of steel (cost of steel) required for design. This...journal article 2023
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Sykes, Victoria (author), Collu, Maurizio (author), Coraddu, A. (author)The deployment of offshore wind in the UK has seen a rapid increase in the past decade and will continue to increase with the securement of the recent Scotwind sites. Floating platforms will be utilised for 60% of these new sites, creating opportunities to try new platform typologies and further solidify the validity of existing concepts....review 2023
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Patryniak, Katarzyna (author), Collu, Maurizio (author), Coraddu, A. (author)Floating Offshore Wind Turbines (FOWT) can harness the abundant offshore wind resource at reduced installation requirements. However, a further decrease in the development risks through higher confidence in the design and analysis methods is needed. The dynamic behaviour of FOWT systems is complex due to the strong interactions between the...journal article 2023
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Vasilikis, N. (author), Geertsma, R.D. (author), Coraddu, A. (author)Maritime industry has set ambitious goals to drastically reduce its greenhouse gas emissions through stipulating and enforcing a number of energy assessment measures. Unfortunately, measures like the EEDI, EEXI, SEEMP and CII do not account for the operational and environmental uncertainty of operations at sea, even though they do provide a...journal article 2023
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Coraddu, A. (author), Oneto, Luca (author), Li, Shen (author), Kalikatzarakis, Miltiadis (author), Karpenko, O. (author)In this paper, for the first time, a three-step approach for the optimal design of stiffened panels accounting for the ultimate limit state due to welding residual stress is developed. First, authors rely on state-of-the-art analytical approaches coupled with recently data-driven nonlinear finite element methods surrogates characterized by...journal article 2023
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Sykes, V. (author), Collu, M. (author), Coraddu, A. (author)The development and deployment of offshore wind farms in the last decade have seen a dramatic increase, now totalling 743 GW globally (Global Wind Energy Council, 2022). This rapid increase is expected to further continue now with the potential to explore deeper sites with the adoption of floating offshore platforms. Proof of this growth has...review 2023
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Bakker, Mathijs (author), Coraddu, A. (author), Hijdra, Rolph (author)Autonomous submerged dredging offers numerous benefits, such as reduced ship resistance and lower vacuum requirements for the dredge pumps. However, this method also presents new challenges, such as stability and buoyancy control, which must be addressed to minimize the energy requirements and ensure cost-effectiveness and sustainability. To...journal article 2023
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Martinelli, Cristiano (author), Coraddu, A. (author), Cammarano, Andrea (author)In the industry field, the increasingly stringent requirements of lightweight structures are exposing the ultimately nonlinear nature of mechanical systems. This is extremely true for systems with moving parts and loose fixtures which show piecewise stiffness behaviours. Nevertheless, the numerical solution of systems with ideal piecewise...journal article 2023
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Tsitsilonis, Konstantinos Marios (author), Theotokatos, Gerasimos (author), Patil, Chaitanya (author), Coraddu, A. (author)The advancements in digital twins when combined with the use of the machine learning tools can facilitate the effective health assessment and diagnostics of safety critical systems. This study aims at developing a framework to address the health assessment of marine engines utilising digital twins based on first-principles. This framework...journal article 2023
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Cademartori, Giulia (author), Oneto, Luca (author), Valdenazzi, Federica (author), Coraddu, A. (author), Gambino, Andrea (author), Anguita, Davide (author)The prediction of ship motions and quiescent periods, is of paramount importance for the maritime industry. The capability to predict these events sufficiently in advance has the potential to improve the safety and efficiency of several marine operations, such as landing and take-off on aircraft carriers, transfer of cargo, and mating...review 2023