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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author)This paper conducts a numerical analysis on the external surface cracked steel pipes reinforced with Composite Repair System. A three-dimensional finite element (FE) model is developed to calculate the Stress Intensity Factor (SIF) of the surface crack, and the crack growth process is evaluated by the Paris’ law. The effect of FRP-to-steel...journal article 2022
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le Poole, J.J. (author), Duchateau, E.A.E. (author), Hopman, J.J. (author), Kana, A.A. (author)The development of concept designs during early warship design stages is essential to inform stakeholder dialogues on technical feasibility, affordability, and risk. One of the key aspects of warship concept designs is the layout of systems in the overall arrangement. The adoption of real-time design processes, such as concurrent design, require...journal article 2022
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Streng, J.E. (author), Kana, A.A. (author), Verbaan, J.H. (author), Barendregt, I.P. (author), Hopman, J.J. (author)In order to reduce fossil fuel consumption of the Royal Netherlands Navy (RNLN) by 70% in 2050, the use of alternative fuels on the large naval surface vessels is examined. This paper examines the implications for the design and operational effectiveness of these vessels by performing two case studies of the Zeven Provinci¨en air defence and...journal article 2022
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Huijgens, L.J.G. (author), Vrijdag, A. (author), Hopman, J.J. (author)The interaction between ship propulsion machinery, propellers and the highly dynamic environment which is the sea is a complex yet highly relevant subject. During a storm, for example, waves and ship motions may cause the propeller to draw air, or ventilate, resulting in rapid changes in propeller thrust and load torque. These fluctuations...journal article 2022
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Sui, Congbiao (author), de Vos, P. (author), Stapersma, D. (author), Visser, K. (author), Hopman, J.J. (author), Ding, Yu (author)Analysis of ship propulsion system performance is often performed using detailed hydrodynamic models to assess load changes, which are subsequently compared to static engine limits, or by detailed engine models that are rarely integrated with sufficiently detailed propulsion models for load change estimation. To investigate the dynamic engine...journal article 2022
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Sui, Congbiao (author), de Vos, P. (author), Hopman, J.J. (author), Visser, K. (author), Stapersma, D. (author), Ding, Yu (author)Current EEDI (Energy Efficiency Design Index) regulations striving to reduce the installed engine power on new ships for a low EEDI may lead to underpowered ships having insufficient power when operating in adverse sea conditions. In this paper, the operational safety of a low-powered ocean-going cargo ship operating in adverse sea conditions...journal article 2022
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Charisi, N.D. (author), Kana, A.A. (author), Hopman, J.J. (author)The aim of this paper is to discuss the challenges associated with the early-stage design of novel and reliable vessels, and discuss some of the expected benefits of the application of multi-fidelity models in addressing some of their early-stage design problems. Traditionally, early-stage design tools are computationally cheap, but lack in...conference paper 2022
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le Poole, J.J. (author), Duchateau, E.A.E. (author), van Oers, B.J. (author), Hopman, J.J. (author), Kana, A.A. (author)Generating detailed warship layouts is crucial to check technical feasibility and performance consistent with emergent requirement elucidation during early stage design. However, generating feasible detailed layouts is a complex and time consuming task. Even today, detailed layout plans are often manually drawn using CAD software, taking up...journal article 2022
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Fang, P. (author), Jiang, X. (author), Hopman, J.J. (author), Bai, Yong (author)Submarine power cables are considered lifelines in wind farm engineering, playing a key role in transporting electric current produced by wind turbines or wave converter. Cables inevitably confront combined loadings in deep-sea areas, affecting the integrity and safety during their installation and application. In this paper, the mechanical...journal article 2021
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Sapra, H.D. (author), Stam, J.N. (author), Reurings, Jeroen (author), van Biert, L (author), van Sluijs, Wim (author), de Vos, P. (author), Visser, K. (author), Aravind, P.V. (author), Hopman, J.J. (author)The current literature on solid oxide fuel cell and internal combustion engine (SOFC-ICE) integration is focused on the application of advanced combustion technologies operating as bottoming cycles to generate a small load share. This integration approach can pose challenges for ships such as restricted dynamic capabilities and large space...journal article 2021
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Huijgens, L.J.G. (author), Vrijdag, A. (author), Hopman, J.J. (author)Standards for environmental impact, safety and operational performance of ships are becoming increasingly strict. In order to meet these standards, the performance of new ship designs must be predicted with an increasing level of detail and confidence. As present prediction methods lack realistic, dynamic behaviour of the ship's propulsion plant...journal article 2021
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Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)Flexible risers are designed with strong anti-collapse capacities which enable them to operate in deep-water reservoirs. However, this anti-collapse capacity is susceptible to the pipe curvature in the flooded annulus condition. For the curved riser sections within the touch-down zone, significant reduction of collapse capacity can occur once...journal article 2021
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Habben Jansen, A.C. (author), Duchateau, E.A.E. (author), Kana, A.A. (author), Hopman, J.J. (author)Vulnerability reduction is an important topic during the design of naval ships because they are designed to operate in hostile environments and because their on-board distributed systems are becoming increasingly complex. The vulnerability needs to be addressed in the early design stages already, in order to prevent expensive or time...journal article 2020
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Li, X. (author), Jiang, X. (author), Hopman, J.J. (author)As offshore hydrocarbon production moves towards ultra-deep water, flexible risers have to withstand the huge hydro-static pressure without collapse. They are designed with strong collapse capacities, allowing them to operate under the condition where their annuli are flooded by the seawater. However, initial imperfections can weaken the...journal article 2020
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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author), Zhu, Ling (author), Liu, Zhiping (author)In the present paper, we propose an analytical method to calculate the Stress Intensity Factor (SIF) of circumferential surface cracks in steel pipes subjected to bending. In light of pipe geometry and bending load case, the analytical formula is raised by introducing new bending correction factors and new geometry correction factors on the...journal article 2020
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Chen, L. (author), Huang, Y. (author), Zheng, Huarong (author), Hopman, J.J. (author), Negenborn, R.R. (author)Urban waterways have great potential in cargo transport to relieve the congestion in the overloaded road networks. This paper explores the potential of applying cooperative multi-vessel systems (CMVSs) to improve the safety and efficiency of transport in urban waterway networks. A framework consisting of vessel train formation (VTF) and...journal article 2020
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Charisi, N.D. (author), Hopman, J.J. (author), Kana, A.A. (author), Papapanagiotou, Nikos (author), Muller, Thijs (author)This paper proposes a parametric modelling method based on Knowledge Based Engineering (KBE) for an LNG bunkering vessel (LNGBV). Parametric models aim to define the geometry and main systems configuration of the vessel starting from the principle that the vessel should be able to perform its mission successfully. The adoption of KBE in...conference paper 2020
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Damala, Dimitra (author), Verbaas, Frans (author), Bonci, M. (author), Akkerman, I. (author), Hopman, J.J. (author)What it is Broaching-to?<br/>When it can occur?<br/>What can happen if it happens?<br/>What is known about it?<br/>How it can be investigated further?<br/>Practical ways to prevent it in design and in operationreport 2020
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Li, Z. (author), Jiang, X. (author), Hopman, J.J. (author)The surface crack, also known as the partly through-thickness crack, is a serious threat to the structural integrity of offshore metallic pipes. In this paper, we review the research progress in regard to surface crack growth in metallic pipes subjected to cyclic loads from the fracture mechanics perspective. The purpose is to provide state-of...review 2020
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Habben Jansen, A.C. (author), de Vos, P. (author), Duchateau, E.A.E. (author), Stapersma, D. (author), Hopman, J.J. (author), van Oers, B.J. (author), Kana, A.A. (author)Naval ships are designed to operate and survive in hostile environments. As such, vulnerability reduction is a major topic of interest during the design of a naval ship. For modern naval ships the vulnerability is largely determined by the design and layout of distributed systems. The vulnerability of these systems needs to be assessed early on,...journal article 2020