Topology optimization of an oil tanker bulkhead subjected to hydrostatic loads

IF 1.2 Q3 ENGINEERING, MARINE
S. Paul
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引用次数: 0

Abstract

In the field of Naval Architecture, the conventional approach to design any vessel is to follow the classification societies’ rules to ensure adequate strength and structural integrity. Nowadays, owners’ demands and purposes of vessels are changing dramatically. To mitigate these demands, sometimes it is necessary to design new types of structures, but the classification society’s rules are not sufficient to prepare these advanced designs. Moreover, Naval Architects are always eager to minimize the lightweight of a vessel as this is directly related to cost and carrying capacity. Topology optimization has become a powerful tool for designing structures in an optimized way. The concept of topology optimization has been utilized by the automotive and aerospace industry for almost thirty years where problems associated with solutions meant to satisfy maximum stiffness and structural integrity with minimum weight which are of utmost importance. However, in the field of marine and offshore structures, the use of topology optimization is infrequent. As structural optimization aims to design structures under certain constraints to achieve better strength and lower cost, the introduction of this technique in ship structure can be lucrative. In this paper, a methodology to apply structural topology optimization in the field of ship design is presented. An Oil Tanker Bulkhead has been selected for this study. SIMULIA ABAQUS software is used in this regard. Topology optimization has been performed by minimizing the strain energy of the component as the objective function and a target stiffness and material volume of the structure as design constraints. Finally, the results demonstrate the general applicability of the methodology presented for obtaining the geometrical layout of the structure.
静水载荷作用下油轮舱壁的拓扑优化
在海军建筑领域,设计任何船只的传统方法都是遵循船级社的规则,以确保足够的强度和结构完整性。如今,船东对船舶的需求和用途正在发生巨大变化。为了缓解这些需求,有时有必要设计新型结构,但船级社的规则不足以准备这些先进的设计。此外,海军建筑师总是渴望将船只的重量降至最低,因为这与成本和承载能力直接相关。拓扑优化已成为以优化方式设计结构的强大工具。拓扑优化的概念已经被汽车和航空航天工业应用了近三十年,其中与旨在以最小重量满足最大刚度和结构完整性的解决方案相关的问题是至关重要的。然而,在海洋和近海结构领域,拓扑优化的使用很少。由于结构优化的目的是在一定的约束条件下设计结构,以获得更好的强度和更低的成本,因此在船舶结构中引入这项技术可能是有利可图的。本文提出了一种将结构拓扑优化应用于船舶设计领域的方法。本研究选择了一艘油轮舱壁。SIMULIA ABAQUS软件用于这方面。拓扑优化是通过最小化构件的应变能作为目标函数,最小化结构的目标刚度和材料体积作为设计约束来进行的。最后,结果证明了所提出的获得结构几何布局的方法的普遍适用性。
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来源期刊
CiteScore
2.50
自引率
5.60%
发文量
0
审稿时长
20 weeks
期刊介绍: TJPRC: Journal of Naval Architecture and Marine Engineering (JNAME) is a peer reviewed journal and it provides a forum for engineers and scientists from a wide range of disciplines to present and discuss various phenomena in the utilization and preservation of ocean environment. Without being limited by the traditional categorization, it is encouraged to present advanced technology development and scientific research, as long as they are aimed for more and better human engagement with ocean environment. Topics include, but not limited to: marine hydrodynamics; structural mechanics; marine propulsion system; design methodology & practice; production technology; system dynamics & control; marine equipment technology; materials science; under-water acoustics; satellite observations; and information technology related to ship and marine systems; ocean energy systems; marine environmental engineering; maritime safety engineering; polar & arctic engineering; coastal & port engineering; aqua-cultural engineering; sub-sea engineering; and specialized water-craft engineering. International Journal of Naval Architecture and Ocean Engineering is published quarterly by the Society of Naval Architects of Korea. In addition to original, full-length, refereed papers, review articles by leading authorities and articulated technical discussions of highly technical interest are also published.
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