矩形冲头冲击下船体板的塑性动力响应  

Dynamic plastic response of ship plates subjected to rectangular mass impact

作　　者：朱凌[1,2] 高军营 徐良 蔡伟[1,2] ZHU Ling;GAO Jun-ying;XU Liang;CAI Wei(Key Laboratory of High Performance Ship Technology(Wuhan University of Technology),Ministry of Education,Wuhan 430063,China;Collaborative Innovation Centre for Advanced Ship and Deep-sea Exploration,Wuhan 430063,China)

机构地区：[1]武汉理工大学高性能船舶技术教育部重点实验室,武汉430063 [2]高新船舶与深海开发装备协同创新中心,武汉430063

出　　处：《船舶力学》2020年第5期643-650,共8页Journal of Ship Mechanics

基　　金：国家自然科学基金资助项目(51579199)。

摘　　要：矩形板是船舶结构的最基本组成元素,船舶结构遭受矩形质量撞击的工况时有发生,因此应对船体板结构的抗撞性能给予足够重视。本文以船体矩形板为研究对象,采用动态冲击实验技术和刚塑性理论相结合的方法,分析了船体板在受到矩形质量块撞击作用时的变形损伤机理;研究中采用试验方法得到船体板的变形模态,在此基础上运用刚塑性理论分别导出了船体板的变形和碰撞力的理论公式,并用实验结果验证其准确性;最后采用理论方法对船体板的边界条件和载荷集中系数等相关参数进行分析。通过与实验结果的对比发现,本文给出的刚塑性理论公式能够较为准确地预测船体板变形和冲击力。Rectangular plates are common structural elements in ship and offshore structures,which are occa⁃sionally subjected to the impact of rectangular masses,so more attention should be paid to the energy absorp⁃tion characteristics of ship structures.In this paper,the damage mechanism of the plates subjected to the im⁃pact by masses is experimentally and theoretically analyzed.The deformation mode of the mild steel plates is observed in the tests.Based on the results of the tests,the theoretical equations are derived to predict the de⁃formations and impact forces using the rigid plastic theory,which are also validated by the experimental re⁃sults.

关 键 词：动态冲击实验 船体板 矩形冲头 刚塑性公式 

分 类 号：U661.1[交通运输工程—船舶及航道工程]