楔形物作用下加筋板结构的耐撞性  

Crashworthiness of Stiffened Plate Under Wedge Impact

作　　者：陈虹廷 赵延杰 周红雨 王德禹[1,2] CHEN Hongting;ZHAO Yanjie;ZHOU Hongyu;WANG Deyu(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Institute of Marine Equipment,Shanghai Jiao Tong University,Shanghai 200240;China Ship Scientific Research Center,Wuxi 214082,Jiangsu,China;Taihu Laboratory of Deepsea Technological Science,Wuxi 214082,Jiangsu,China)

机构地区：[1]上海交通大学海洋工程国家重点实验室,上海200240 [2]上海交通大学海洋装备研究院,上海200240 [3]中国船舶科学研究中心,江苏无锡214082 [4]深海技术科学太湖实验室,江苏无锡214082

出　　处：《上海交通大学学报》2024年第7期1057-1066,共10页Journal of Shanghai Jiaotong University

基　　金：国家自然科学基金(U2241266)资助项目。

摘　　要：为了预报楔形物偏心垂向准静态压载作用下船舶加筋板结构的抵抗能力,提出了新的简化解析方法,将矩形板的塑性变形区域划分为非对称的8个板块,将骨材划分为非对称的2个部分,矩形板、骨材各部分均采用直线的变形模式,从船舶碰撞内部动力学的角度,基于刚塑性理论,考虑膜拉伸作用和弯曲作用,推导了矩形板、骨材在楔形物偏心垂向作用下发生变形损伤的抵抗力与横向变形之间的简化解析计算方法.利用非线性有限元软件Abaqus的仿真计算结果对该简化解析方法进行验证.结果表明,该简化解析方法具有较高的计算精度,从而可用于船体结构设计阶段快速预报船舶舷侧结构的耐撞性能.In order to predict the crashworthiness of stiffened plate structures of ships under eccentric vertical quasi-static ballast of wedge,a new simplified analytical method is proposed in this paper.The plastic deformation area of the rectangular plate is divided into eight asymmetrical plates and the aggregate is divided into two asymmetrical parts.An linear mode is adopted in the deformation of rectangular plate and aggregate.From the perspective of the internal dynamics of ship collision,and based on the rigid-plastic theory,a simplified analytical method is deduced between the deformation damage resistance and lateral deformation of rectangular plate and aggregate under the eccentric vertical action of wedge impact,considering tensile and bending effects of the membrane.The proposed method is verified by the simulation results of nonlinear finite element software Abaqus.The results show that the proposed method has a high prediction accuracy,and can be used in the hull structure design stage to quickly predict the crashworthiness of the ship side structure.

关 键 词：结构耐撞性 楔形物 加筋板 简化解析方法 

分 类 号：U661.43[交通运输工程—船舶及航道工程]