【作者】 李博；

【导师】 顾解忡； 陈麟；

【作者基本信息】 上海交通大学 ， 船舶与海洋工程， 2014， 硕士

【摘要】 随着世界经济增长的放缓,航运市场最近二年呈现震荡走势。散货船作为三大主力船型之一,在经济发展中起着重要的作用。船舶市场上,散货船新船订单量稳步上升,尤其是巴拿马型和好望角型散货船。但高油价和低船价一直是船市低迷的主要影响因素,因此研发出低油耗、低排放的绿色船型才能迎合市场的需求和增强企业的市场竞争力。本论文以实际设计项目81,600DWT散货船作为研究对象,分析其结构设计的特点。首先阐述了结构共同规范的基本要求和载荷计算;然后全面介绍了该船的主船体的结构布置,包括货舱区域、机舱区域和艏艉部;最后以初步设计图纸为基础,运用Mars软件进行强度计算,通过软件分析进行构件尺寸的优化,以达到最优的设计。有限元作为一种广泛应力的数值分析方法,对于船体结构强度直接计算分析起着十分重要的作用。根据共同规范的要求,建立了典型货舱段的有限元模型,并校核了船体主要支撑构件的结构强度,其中包括屈服、屈曲和疲劳强度。通过对计算结果进行分析,修改不满足要求的结构,为以后的设计工作提供了参考和借鉴。最后选取了舱口围结构和锚机底座作为结构局部强度优化的案例,采用两种不同的分析方法对现有结构进行分析和优化,最终得到了满足优化设计要求的构件尺寸。更多还原

【Abstract】 Slowing down with worldwild economy, the Shipping Market trends to be concussive. While as one of the three major type of vessel, orders for Bulk Carrier are raising steadily, especially for Panamax and Capesize type, which play a key role in the Shipping Market. However, the higher expenses in oil and lower ship’s price leads a main sector to the Shipping Market’s recession, consequently, only the Green type vessel with lower oil consumption and lower emission could satisfy market’s needs and enhance shipbuilding company’s competition power.In this thesis, a real project 81,600 DWT Bulk Carrier is regarded as the object vessel. It analyzes its structure from several aspects: firstly, requirements for Common Structure Rules and loading calculation; secondly, the general arrangement for the main hull part of the vessel, including cargo hold, engine room and fore&stern part; finally, based on the preliminary design drawing, making the design optimization through the strength calculation by Mars software.Furthermore, this thesis establishes the FEM model for typical cargo block as the Common Rules request, which helps checking the structure strength,including Yielding Assessment, Buckling Assessment and Fatigue Assessment of the primary supporting members. By analyzing and rectifying the result, it will be useful to future design, and could be used as a reference design.Finally, design of hatch coaming and windlass foundation are chosen as a case for partlial structure strength optimization. It successfully derived the proper dimensions by comparing two different methods in according to the optimized design.更多还原