圆管形坠落物冲击下甲板结构损伤特性  

Damage Characteristics of Deck Structure under the Impact of Tubular Falling Objects

作　　者：郁荣 骆伟[2] 陈浩 刘敬喜[3,4] YU Rong;LUO Wei;CHEN Hao;LIU Jingxi(School of Mechanical Technology,Wuxi Institute of Technology,Wuxi 214121,China;China Ship Development and Design Center,Wuhan 430064,China;School of Naval Architecture and Ocean Engineering,Huazhong University of Science and Technology,Wuhan 430074,China;Hubei Key Lab of Naval Architecture and Ocean Engineering Hydrodynamics,Wuhan 430074,China)

机构地区：[1]无锡职业技术学院机械技术学院,江苏无锡214121 [2]中国舰船研究设计中心,湖北武汉430064 [3]华中科技大学船舶与海洋工程学院,湖北武汉430074 [4]船舶与海洋水动力湖北省重点实验室,湖北武汉430074

出　　处：《江苏海洋大学学报（自然科学版）》2022年第4期52-58,共7页Journal of Jiangsu Ocean University:Natural Science Edition

基　　金：国家自然科学基金资助项目(52071150);无锡职业技术学院博士课题(BT2022-03)。

摘　　要：研究了甲板结构在圆管形坠落物冲击下的变形及损伤特性。首先运用试验与有限元方法,研究甲板板格在圆冲头冲击下的响应特性;然后进行加强型结构抗冲击有限元模拟。结果表明,因冲头尺寸较小,原甲板结构较易产生局部损伤,而纵向强筋可显著减轻结构损伤程度。在工程船的甲板结构设计中,宜尽量增加加强筋数量、减小筋间距,以避免甲板结构受坠落物冲击产生过早损伤。Deformation and fracture of the deck structure of engineering vessel under impact of tubular falling objects have been investigated in the present research. Firstly, the response of the deck panel under the impactor is studied by means of experiment and finite element method. Secondly, the impact resistance finite element simulation of reinforced structure is carried out. Results show that the original deck structure suffers local fracture due to a small size of the impactor, while the stiffener would reduce the plastic deformation and fracture effectively. In engineering applications, the number of stiffeners should be increased, and space between two stiffeners should be reduced, in order to avoid premature damage of the deck structure under the falling impact.

关 键 词：甲板结构 圆管形坠落物 坠落冲击 冲击试验 有限元模拟 

分 类 号：U661.43[交通运输工程—船舶及航道工程]