Addressing Complexity Aspects in Conceptual Ship Design: A Systems Engineering Approach

Gaspar, Henrique M.; Rhodes, Donna H.; Ross, Adam M.; Erikstad, Stein Ove

doi:10.5957/jspd.28.4.120015

Cited by 28 publications

(23 citation statements)

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“…As a perspective to understand complexity in engineering systems, Rhodes and Ross [29] and Gaspar et al [30], [31] captures complexity as relating to structural, behavioral, contextual, temporal, and perceptual aspects. To handle temporal complexity, dealing with future uncertainty, we need to assess the impact that operational, technical and commercial aspects of uncertainty have on the lifecycle value of a ship.…”

Section: F Tradespace Exploration and Evaluationmentioning

confidence: 99%

Handling commercial, operational and technical uncertainty in early stage offshore ship design

Agis

Pettersen

Rehn

et al. 2016

2016 11th System of Systems Engineering Conference (SoSE)

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Abstract-In this paper, we assess state-of-the-art methods for handling aspects of technical, commercial and operational uncertainty in the early stages of offshore ship design. Uncertainty affects the lifecycle performance of a ship in a complex manner, which is difficult to assess in the early design process. We approach this problem by decomposing uncertainty into technical, commercial and operational aspects, and investigate how it can be identified, modelled and handled. Methods discussed include design structure matrix, tradespace exploration and evaluation methods, real options theory, stochastic optimization, and system dynamics. Strategies for handling uncertainty discussed include margins, and specific system lifecycle properties "-ilities". We argue that a decomposition of uncertainty facilitates the use of current methods and approaches for decision-making in early stage ship design.

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Section: F Tradespace Exploration and Evaluationmentioning

confidence: 99%

Handling commercial, operational and technical uncertainty in early stage offshore ship design

Agis

Pettersen

Rehn

et al. 2016

2016 11th System of Systems Engineering Conference (SoSE)

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“…under which weather and loading conditions it will sail, see [1]. Traditional methods for evaluating designs do not offer the opportunity to handle complex profiles, and normally make simplified calculation based on an (assumed or estimated) average or representative condition (or a limited number of conditions) for the operation, see [2]. Current design practices, however, are taking a more pro-active approach to understanding the needs of the customers, in that we see an increased focus on optimization over a range of conditions, rather than hyper-optimization 1 at one or few design points.…”

Section: Introductionmentioning

confidence: 99%

Integrated decision support approach for ship design

Fathi

Grimstad

Johnsen

et al. 2013

2013 MTS/IEEE OCEANS - Bergen

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This paper presents a simulation based benchmarking methodology for evaluation of ship designs. The approach utilizes hydrodynamic calculations to obtain correct powering and speed values in waves, hind-cast weather data, and a detailed mission profile. This information is combined in a simulation model to produce a detailed and realistic operational profile of the design. The operational profile is then aggregated into a set of key performance indicators, to enable easy comparisons of different designs. The main advantage of this methodology is that is provides detailed and realistic operational profiles of ship designs at an early stage of the design process without using expensive methods such as CFD or model tests.A simple test case is presented to show how this methodology may be used in practice to capture differences in performance between two similar ship designs. Further, the test case shows how these differences may be presented in a manor that makes it easy to compare the performance of the ship designs.

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“…Also Engel and Browning [] base their design for adaptability on a decomposed view of a system. Gaspar et al [] discuss the need to decompose the system as a general approach to handling complexity. Along the same lines, product platform development typically starts by decomposing the system to identify common elements to be shared by product variants that are based on the platform [Dahmus, Gonzalez‐Zugasti, and Otto, ; Hölttä‐Otto, ].…”

Section: Introductionmentioning

confidence: 99%

Seeing Complex System through Different Lenses: Impact of Decomposition Perspective on System Architecture Analysis

Suh

Chiriac

Hölttä‐Otto

2014

Systems Engineering

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Creating a representation of the base system architecture is one of the first and most critical steps for system development. Typically, the system architect would start by decomposing the existing or proposed system into smaller subsystems or modules. It is widely recognized that at the overall systems level a system can be viewed from different viewpoints. However, unlike often assumed, also when focusing on a single view, such as a systems view, the system decomposition can be done in many alternative ways thus resulting in a different base architecture every time. Depending on the system architect's perspective, representation of system can vary widely, having a profound impact on subsequent system architecture development. In this paper, quantitative analysis of system architecture representation, using a design structure matrix (DSM), and its effect on system modularity is presented. The analysis reveals that the results of the system analysis, namely modularity, are different for the same system, depending on the system architect's perspective. This work highlights the need for more structured approaches to system decomposition and system analysis based on that decomposition. C⃝ 2014 Wiley Periodicals, Inc. Syst Eng

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Addressing Complexity Aspects in Conceptual Ship Design: A Systems Engineering Approach

Cited by 28 publications

References 0 publications

Handling commercial, operational and technical uncertainty in early stage offshore ship design

Handling commercial, operational and technical uncertainty in early stage offshore ship design

Integrated decision support approach for ship design

Seeing Complex System through Different Lenses: Impact of Decomposition Perspective on System Architecture Analysis

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