流固耦合的船舶结构强度分析  

Ship structure strength analysis of fluid-structure interaction

作　　者：董明海[1] 赵陈[1] 郭永升 李云[1] 徐明伟[1] DONG Ming-hai;ZHAO Chen;GUO Yong-sheng;LI Yun;XU Ming-wei(Zhejiang International Maritime College,Zhoushan 316021,China;Zhoushan Shipbuilding Engineering Research Center STRI,Zhoushan 316021,China)

机构地区：[1]浙江国际海运职业技术学院,浙江舟山316021 [2]上海船舶工艺研究所舟山船舶工程研究中心,浙江舟山316021

出　　处：《舰船科学技术》2021年第14期1-3,共3页Ship Science and Technology

基　　金：浙江省科技厅基础公益研究计划项目(LGG1809002);舟山市公益类科技项目(2019C31059)

摘　　要：常规方法构建船舶结构有限元模型时,对模型施加的流场绕流压力不充分,导致结构应力应变数值模拟精度较差。针对这一问题,设计流固耦合的船舶结构强度分析方法。建立船舶有限元模型,网格划分船体和流体区域,计算船体波浪水槽参数,模拟船舶航行的绕流场,导入绕流场动压力和静压力,施加流场载荷给船体结构,得到不同受力情况下的应力应变,确定结构强度。设置对比实验,结果表明,设计方法相比常规方法,减少船舶结构最大变形、最大应力值的数值模拟误差,对结构强度的判断更为准确。Conventional method to build the finite element model of ship structure,the model of the flow field around the flow pressure is not sufficient,lead to poor structure stress and strain numerical simulation accuracy.In order to solve this problem,the design of fluid-structure coupling structure strength analysis method of the ship.Mesh to build finite element model of ship,hull and fluid field,the calculation of hull wave flume parameters,simulation of flow field in a ship,the import flow field around the dynamic pressure and static pressure,applied load to the hull structure,flow field of stress and strain under different stress conditions,determine the structure strength.Set the contrast experiment,the results show that the design method compared with conventional methods,reduce the ship structure maximum deformation and maximum stress value of numerical simulation,the error of structural strength judgment more accurate.

关 键 词：船体结构 绕流场 有限元模型 应力应变 

分 类 号：U663.5[交通运输工程—船舶及航道工程]