波浪作用下网帘的水动力载荷和变形计算  

Calculation of Hydrodynamic Loads and Deformation of Fish Net under Wave

作　　者：罗敬 郭晓宇[1,2] 王本龙[1,2] LUO Jing;GUO Xiaoyu;WANG Benlong(Department of Engineering Mechanics,Shanghai Jiao Tong University,Shanghai 200240,China;MOE Key Laboratory of Hydrodynamics,Shanghai Jiao Tong University,Shanghai 200240,China)

机构地区：[1]上海交通大学工程力学系,上海200240 [2]上海交通大学水动力学教育部重点实验室,上海200240

出　　处：《力学季刊》2020年第3期441-451,共11页Chinese Quarterly of Mechanics

基　　金：国家自然科学基金(11572193)。

摘　　要：离岸水产养殖中的网箱养殖逐渐成为全球水产养殖业的主导.海洋环境中网箱的水动力荷载对网箱结构的整体设计提出了更高的要求.本文建立了一种计算波浪荷载下网帘结构水动力和变形的数值计算方法,利用质点杆单元模型模拟网帘结构,通过Morison公式求解网帘结构在波浪荷载下的受力,得到网帘结构的空间分布,同时运用迭代法对网帘结构结点受力及运动变形时的位移进行数值迭代计算,通过双目测距系统对网帘结构变形测量的结果,获得等效弹性系数,并对数值结果进行了验证.In offshore aquaculture, cage culture has gradually become the dominant global aquaculture type. Cages exposed to the marine environment are facing severe hydrodynamic loads, which put forward higher requirements for the overall design of the cage structure. In this paper, a numerical method for calculating the hydrodynamic loads and the deformation of the net curtain structure under wave is established. The mass point element model is used to simulate the structure of the net curtain. The force on the net curtain structure under the wave load is solved by the Morison formula. Iterative method is used to numerically calculate the displacement of the mesh curtain structure node when it is subjected to force and motion deformation. The numerical results are compared with the deformation measurement results of the mesh curtain structure using the binocular ranging system to obtain the equivalent elastic parameters, and to validate the numerical calculation.

关 键 词：网帘结构 网帘变形 波浪力 Morison公式 立体视觉 

分 类 号：O352[理学—流体力学]