共查询到20条相似文献,搜索用时 58 毫秒
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简述了风电基础运输船的结构设计,并主要叙述了风电基础运输船的结构强度有限元分析,应用LR的ShipRight对其屈服、屈曲强度进行分析评估,并依据结果对船舶结构形式进行了加强.直接计算中的工况载荷、分析结果及加强方案等,对大件运输船的结构设计有一定的参考价值. 相似文献
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本文阐述高速铝制双体船的强度评估方法.以1艘高速铝制海监船为例,探究总纵弯矩的分布曲线、总扭矩施加位置等因素对船舶结构强度的影响.在此基础上对全船结构强度作出评估,提出若干合理建议.相关结论对同类型船舶的结构设计提供了一定的参考. 相似文献
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Zbigniew Sekulski 《Marine Structures》2010,23(4):405-433
Ship structural design has become recently an ever more important and difficult task, because it should always take into account several estimation criteria which are a crucial element of shipyard management, as the hull structural strength is one of the most important factors of overall ship safety, and the total cost of structural materials used for the construction of a ship is a significant part of her total construction cost. Simultaneously, a complete definition of the optimal structural design requires a formulation of size-topology-shape-material optimization task unifying the optimization problems from these four areas and giving an effective solution of this problem. So far, a significant progress towards a solution of this problem has not been achieved. An objective of the underlying paper was to develop an evolutionary algorithm for multi-objective optimization of both topology and scantlings of structural elements of large spatial sections of ships. In the paper an evolutionary algorithm where selection takes place based on the scalar objective function is proposed and applied to solve the problem of structural elements weight and cleaned and painted surface area on a high-speed vehicle-passenger catamaran structure with several design variables, such as plate thickness, scantlings of longitudinal stiffeners and transverse frames, and spacing between longitudinal and transversal members. The results of numerical experiments with the use of the developed algorithm are presented. They show that the proposed genetic algorithm can be an efficient multi-objective optimization tool for simultaneous design of the topology and sizing of ship structures. 相似文献
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Riccardo Broglia Stefano Zaghi Andrea Di Mascio 《Journal of Marine Science and Technology》2011,16(3):254-269
The simulations of the flow around a high-speed vessel in both catamaran and monohull configurations are carried out by the
numerical solution of the Reynold averaged Navier–Stokes (RANS) equations. The goal of the analysis is the investigation of
the interference phenomena between the two hulls, with focus on its dependence on the Reynolds number (Re). To this aim, numerical
simulations are carried out for values of Re ranging from 106 to 108 for two different values of the Froude number (Fr = 0.30, 0.45). Wave patterns, wave profiles, limiting streamlines, surface pressure and velocity fields are analyzed; comparison
is made between the catamaran and the monohull configurations. Dependence of the pressure and viscous resistance coefficients,
as well as of the interference factor, on the Reynolds number is investigated. Verification and validation for both resistance
coefficients and wave cuts is also performed. 相似文献
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风机运输甲板驳是用于海上风机运输的海洋工程辅助船,近年来随着海上风力发电的兴起而迅速发展。本文采用全船有限元直接计算和 CCS规范计算2种方法对某风机运输甲板驳的结构强度进行评估,计算表明该船结构强度满足设计要求。本文的研究成果和结论对同类型风电安装船舶的结构设计具有参考意义。 相似文献
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舰船的砰击载荷与结构响应的研究一直备受关注.对于双体船来说,砰击按部位可分为底部砰击、外飘砰击和甲板上浪,和连接相邻船体的甲板下侧,即湿甲板砰击.目前对于双体船的砰击计算还不完善,因此对于该船型的砰击研究十分必要.本文分别利用规范计算和直接计算的方式,对砰击载荷作用下双体船强度影响进行研究.规范计算主要基于中国船级社规范计算砰击载荷,直接计算则是通过线性势流理论预报船波相对速度,借助相关规范确定砰击压力系数,实现砰击载荷的直接计算.通过有限元软件加载计算,分析比较2种载荷计算方法对双体船强度的影响,以指导砰击载荷作用下双体船局部结构的设计实践. 相似文献
