波浪载荷作用下结构动态响应分析方法研究  

Research on Dynamic Response Analysis Method of Structure Under Wave Loading

作　　者：况贶 梁德利 简帆 张冲 KUANG Kuang;LIANG Deli;JIAN Fan;ZHANG Chong(No.709 Canglong Avenue,Jiangxia District,Wuhan 430205;Beijing Institute of Astronautical System Engineering,Beijing 100076;College of Shipbuilding Engineering,Harbin Engineering University,Harbin 150001;International Joint Laboratory of Naval Architecture and Offshore Technology between Harbin Engineering University and the University of Lisbon,Harbin 150001)

机构地区：[1]武汉市江夏区藏龙大道709号,武汉430205 [2]北京宇航系统工程研究所,北京100076 [3]哈尔滨工程大学船舶工程学院,哈尔滨150001 [4]教育部船舶与海洋工程技术国际合作联合实验室,哈尔滨150001

出　　处：《舰船电子工程》2023年第11期211-215,共5页Ship Electronic Engineering

摘　　要：开展船舶结构直接计算时,传统的准静态分析方法仅对瞬时载荷作用下船体结构强度进行计算。但在实际运营过程中,船舶结构在静水弯矩和波浪弯矩的共同作用下,不断经历中拱中垂的周期性变化,仅通过准静态评估方法不能全面地反映船体结构真实状态,所以对动态载荷作用下结构响应分析方法开展研究是十分必要的。论文针对动态结构响应计算中时历水动压力传递及加载问题,开发一种考虑水动力模型网格与目标邮轮湿表面外壳有限元网格间的尺寸关系、水动力计算坐标系与建模坐标系对应关系、水动力网格坐标随六自由度运动的变化及网格坐标空间位置关系,并采用三角形面积插值方法实现动态水动压力传递的算法,同时对ABAQUS二次开发实现水动压力精确加载。When carrying out direct calculation of ship structure,the traditional quasi-static analysis method only calculates the strength of the hull structure under instantaneous loading.However,in the actual operation process,the ship structure constant⁃ly undergoes periodic changes in the middle arch and dip under the combined action of hydrostatic bending moment and wave bend⁃ing moment,and the real state of the hull structure cannot be fully reflected by the quasi-static evaluation method alone,so it is necessary to study the structural response analysis method under dynamic load.Aiming at the problem of hydrodynamic pressure transfer and loading in dynamic structure response calculation,this paper develops an algorithm that considers the dimensional rela⁃tionship between the hydrodynamic model grid and the finite element grid of the wet surface shell of the target cruise ship,the corre⁃spondence between the hydrodynamic calculation coordinate system and the modeling coordinate system,the change of hydrodynam⁃ic grid coordinates with the movement of six degrees of freedom and the spatial position relationship of grid coordinates,and uses the triangular area interpolation method to realize dynamic hydrodynamic pressure transfer,and at the same time realizes accurate hy⁃draulic pressure loading for the secondary development of ABAQUS.

关 键 词：水动压力 压力映射 水动力网格 有限元网格 

分 类 号：U698.4[交通运输工程—港口、海岸及近海工程]