Abstract:Recent advances in the sensor and weapons systems being installed on US Navy ships and the electrification required to power them are now forcing the engineering community to re-evaluate the effectiveness of the tools and processes now in use. At the same time, over the last decade there have been significant changes in the way that software is architected and developed. User expectations for software tools have also radically changed. Newly minted engineers have grown to expect that any needed information can… Show more
In the initial sizing of complex vessels, where recourse to type ship design can be overly restrictive, one crucial set of design features has traditionally been poorly addressed. This is the estimation of the weight and space demands of the various Distributed Ship Services Systems (DS3), which include different types of commodity services beyond those primarily associated with the ship propulsion system. In general, naval vessels are typified by extensive and densely engineered DS3, with the modern naval submarine being at the extreme of dense outfitting. Despite this, the ability for the concept designer to consider the impact of different configurations for the DS3 arrangements has not been readily addressed in concept design. This paper describes ongoing work at University College London (UCL) to develop a novel DS3 synthesis approach utilising computer tools, such as Paramarine™, MATLAB®, and CPLEX®, which provide the concept designer with a quantitative network-based evaluation to enable DS3 space and weight inputs early in the design process. The results of applying the approach to a conventional submarine case study indicate quantitative insights into early DS3 sizing can be obtained. The paper concludes with likely developments in concluding the research study.
In the initial sizing of complex vessels, where recourse to type ship design can be overly restrictive, one crucial set of design features has traditionally been poorly addressed. This is the estimation of the weight and space demands of the various Distributed Ship Services Systems (DS3), which include different types of commodity services beyond those primarily associated with the ship propulsion system. In general, naval vessels are typified by extensive and densely engineered DS3, with the modern naval submarine being at the extreme of dense outfitting. Despite this, the ability for the concept designer to consider the impact of different configurations for the DS3 arrangements has not been readily addressed in concept design. This paper describes ongoing work at University College London (UCL) to develop a novel DS3 synthesis approach utilising computer tools, such as Paramarine™, MATLAB®, and CPLEX®, which provide the concept designer with a quantitative network-based evaluation to enable DS3 space and weight inputs early in the design process. The results of applying the approach to a conventional submarine case study indicate quantitative insights into early DS3 sizing can be obtained. The paper concludes with likely developments in concluding the research study.
“…Regarding part c of initialization, (18) and (19) formulated by [40] outputs passing and failing values for less-than-or-equal-to and greater-than-or-equal-to constraints, respectively: (18) gte (x, (19) If the sum of the constraint outputs is less than the total number of constraints -that is, if a specific configuration that does not pass all of the constraints -the inductor model automatically receives a poor fitness value.…”
Section: Stopping Criteriamentioning
confidence: 99%
“…The Navy has also invested heavily in the PEBB Concept for building up ship power conversion systems [2], [17], [18]. The Navy has developed Smart Ship System Design (S3D) concurrent engineering environment to support early concept explorations on ship system designs from electrical, mechanical, thermal and layout standpoints [19], [12]. The author of this thesis have proposed a meta-heuristic modeling approach that can be used to derive physics-based scaling laws [15].…”
The U.S. Navy is currently challenged to develop new ship designs under compressed schedules. These ship designs must necessarily incorporate emerging technologies for high power energy conversion in order to enable smaller ship designs with a high degree of electrification and next generation electrified weapons. One way this challenge is being addressed is through development of collaborative concurrent design environment that allows for design space exploration across a wide range of implementation options. The most significant challenge is assurance of a dependable power and energy service via the shipboard Integrated Power and Energy System (IPES). The IPES is largely made up of interconnected power conversion and distribution equipment with allocated functionalities in order to meet demanding Quality of Power, Quality of Service and Survivability requirements. Feasible IPES implementations must fit within the ship hull constraints and must not violate limitations on ship displacement. This Thesis applies the theory DEDICATION Firstly, I would like to thank my professor Robert Cuzner for giving me opportunity to work with Metamodeling using Genetic Algorithm project. He guided me in every step of the entire research. He provided me with different exposures in the trending in the current industry I am thankful to my fellow colleague Thomas Nguyen from University of Wisconsin-Madison who helped me throughout this research. I would also like to thank Mahitha Voola for the moral support thought out my masters. Last but not the least, I would like to thank my Mother, she is always the first person I call on for advice. She is not just my mother, but my counselor and friend and I will always grateful for all the sacrifice. v
“…), além de apresentar uma grande interdependência entre elas. Por este motivo, estes projetos são tratados como sendo de grande complexidade (LANGLAND et al, 2015) e ao envolverem uma grande gama de disciplinas, a análise dos subsistemas e seus componentes torna-se uma tarefa relativamente complicada ao requerer intrinsecamente que os projetistas detenham tantos saberes distintos. Logo, torna-se imperativo a adoção de uma metodologia de projeto adequada para que a solução a ser desenvolvida seja a melhor, frente aos requisitos a serem considerados.…”
Section: Projeto De Naviosunclassified
“…Alternativamente, a metodologia descrita neste trabalho pode ser usada dentro da visão de Projeto baseado em Modelo (Langland et al 2015) na qual o projeto de um submarino é realizado por meio de modelos implementados em RdP PTD-OO. Permitindo com que engenheiros navais possam empregar uma metodologia de projeto distinta das já tradicionais, como a Espiral de Projeto.…”
Resumo O projeto de submarinos convencionais demanda uma ampla variedade de conhecimentos nas minhas diversas áreas da engenharia, como elétrica, mecânica, naval, além de subáreas específicas como termodinâmica, hidrodinâmica, hidrostática, engenharia estrutural, distribuição de energia elétrica, processos químico-físicos. O que acaba por caracterizar o projeto de submarinos como sendo um de um sistema complexo, pois não só consiste de várias áreas do conhecimento, como também profissionais com diferentes experiências. Na área de projetos navais, há um esforço por se desenvolver softwares, técnicas e formalismos que auxiliem na resolução dos desafios da área, visto que com o crescimento das tecnologias miniaturizadas, computação da nuvem e introdução dos conceitos da Indústria 4.0, há espaço para novas abordagens. Em outros ramos industriais, existem formalismos para os chamados sistemas complexos, como as Redes de Petri Predicado Transição Diferencial Orientadas a Objetos (PTD-OO), as quais permitem que sistemas de diferentes naturezas sejam tratados conjuntamente. Na área naval, este tipo de modelagem se traduz em oportunidades de inovação nas áreas de projetos preliminares e avaliação de requisitos durante as primeiras fases de um projeto. Ao longo deste trabalho, são apresentados conceitos atinentes às redes de Petri, ao projeto naval e o desenvolvimento de um modelo em Redes de Petri PTD-OO dos sistemas de propulsão e de eletricidade de um submarino convencional com a finalidade de avaliar a adequabilidade deste formalismo para este sistema.
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