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金属夹芯板替换传统板筋结构的研究
王孝宇, 何 辉, 吴广明
中国舰船研究设计中心 上海分部,上海 201108
摘要:
为实现金属夹芯结构甲板对传统板筋结构甲板的替代,采用有限元软件计算金属夹芯结构的失效模式,找到替代传统加筋板强力甲板的金属夹芯结构腹板面板设计要求准则,并在满足该准则要求的前提下以4种优化原则为筛选条件,通过枚举法对比整体欧拉应力,得到最佳的金属夹芯结构替代方案。当以传统加筋板结构为替换对象时,根据减重和降低高度等工程需求,对金属夹芯基本单元的设计提出3种原则,以欧拉应力最大为前提,原则1为不减高、不减重,原则2为减重、不减高度,原则3为减高、不减重。以板厚度为10 mm,球扁钢型号为10#的加筋板为研究对象,分别得到各设计原则下的最优替代方案。所作研究有助于找到由金属夹芯结构替代不同尺寸传统加筋板的最佳方案。
关键词:  传统加筋板  局部强度  稳定性  金属夹芯结构
DOI:
分类号:U661.43
基金项目:
A Research on Replacement of Traditional Stiffened Plate Deck with Metal Sandwich Structure
WANG Xiaoyu, HE Hui, WU Guangming
China Ship Research and Design Center Shanghai Branch, Shanghai 201108, China
Abstract:
In order to replace the traditional reinforced structure deck with a metal sandwich structure deck, finite element software is used to calculate the failure modes of the metal sandwich structure, and the design requirements criteria for the metal sandwich structure are found. Under the premise of meeting the criteria, four different optimization principles are used as selecting conditions, and the overall Euler stress is compared with the enumeration method, thus the best metal sandwich structure alternative solution is obtained. In replacing traditional stiffened plate structures, three principles are proposed for the design of basic units of metal sandwich plates based on the engineering requirements such as weight reduction and height reduction, of which the premise is to make the Euler stress maximized. Principle 1 does not reduce height and weight; principle 2 reduces weight but not height; and principle 3 reduces height but not weight. The stiffened plate with a plate thickness of 10 mm and a spherical flat steel type of 10# was are taken as the research object to obtain the optimal solutions under each design principle. The research helps to find the best solution for replacing traditional stiffened plates of different sizes with metal sandwich structures.
Key words:  traditional stiffened plate  local strength  stability  metal sandwich structure