移动砰击载荷作用下的加筋板动力响应参数分析  

Analysis of Dynamic Response Parameter of Stiffened Plates Under Moving Slamming Loads

作　　者：尹铭禄 邹路遥 曲雪 吴剑国[1] YIN Minglu;ZOU Luyao;QU Xue;WU Jianguo(School of Civil Engineering,Zhejiang University of Technology,Hangzhou 310023,China;Marine Design&Research Institute of China,Shanghai 200011,China)

机构地区：[1]浙江工业大学土木工程学院,杭州310023 [2]中国船舶及海洋工程设计研究院,上海200011

出　　处：《船舶》2024年第2期88-95,共8页Ship & Boat

摘　　要：针对高海况下船舶结构遭受的砰击载荷问题,该文采用Abaqus有限元软件,模拟了不同移动方向的砰击载荷对5块加筋板动力响应的影响。研究中,砰击载荷被等效为线性上升、指数衰减的脉冲时历形式,通过改变载荷参数(峰值压力、低压值、上升段长度、下降段长度和移动速度),并分析这些参数对加筋板动力响应的具体影响。研究发现,加筋板的动力响应与载荷参数紧密相关,特别是移动速度对动力响应的影响最为显著。此外,通过引入移动动荷系数DLFm和进行无因次化分析,文中深入探讨了动力响应与砰击载荷无因次参数间的变化规律及其敏感度,为船舶结构设计和优化提供了重要的理论依据。In response to the issue of slamming loads experienced by ship structures under high sea conditions,this paper employs the Abaqus finite element software to simulate the impact of slamming loads moving in different directions on the dynamic response of five stiffened panels.The slamming load is equivalently modeled as a pulse time history that rises linearly and decays exponentially.By varying the load parameters(peak pressure,low pressure,length of rising section,length of falling section and moving speed),the paper analyzes the specific impact of these parameters on the dynamic response of the stiffened panels.The research finds that the dynamic response of the stiffened panels is closely related to the load parameters,especially the influence of moving speed on the dynamic response is the most significant.Furthermore,by introducing the moving dynamic load factor DLFm and conducting a dimensionless analysis,the paper deeply explores the variation laws and sensitivities between the dynamic response and the dimensionless parameters of the slamming load,providing important theoretical basis for the design and optimization of ship structures.

关 键 词：砰击载荷 动力响应 载荷参数 移动动荷系数 无因次化 敏感度 

分 类 号：U661.4[交通运输工程—船舶及航道工程]