摘要
文章基于传统的多体水动力学和有限元方法,将连续的浮体离散为由有限个弹性梁元连接的刚体子模块,各个模块不仅受到相邻模块的水动力的干扰,同时还受到为保证结构连续性而引入的等效连接梁的作用,从而建立了一种新的可以用于求解浮体水弹性响应的数值方法。采用文中的数值计算方法,对一个箱形的超大型浮体的水弹性响应进行了研究。并通过与传统的水弹性方法计算结果的对比,证明了文中的方法的正确性和可靠性。该文的数值计算方法可为以后非均匀海洋环境下浮式结构物的水弹性响应计算提供依据。
On the basis of the traditional potential theory and finite element method(FEM),a numerical hydroelasticity method is established.The continuous floating structure is discretized into rigid sub-modules connected by finite number of elastic beam elements;the responses of each module will be not only affected by the hydrodynamic interactions by other modules,but also restricted by the connected beams,which is introduced to guarantee the continuity of the structure.The hydroelastic responses of a very large floating structure(VLFS)obtained from the proposed method are verified against the results obtained from the conventional hydroelastic method.Good agreement can be acquired,which indicates that the proposed method is accurate and reliable.The proposed numerical method can be further developed to investigate the hydroelastic responses of the floating structures in the inhomogeneous sea environments.
作者
位巍
付世晓
宋春辉
WEI Wei;FU Shi-xiao;SONG Chun-hui(State Key Laboratory of Ocean Engineering,Shanghai Jiao Tong University,Shanghai 200240,China;Collaborative Innovation Center for Advanced Ship and Deep-Sea Exploration,Shanghai 200240,China)
出处
《船舶力学》
EI
CSCD
北大核心
2019年第1期43-50,共8页
Journal of Ship Mechanics
基金
国家自然科学基金重大项目(51490674)
关键词
多体水动力学
有限元
刚度阵
超大型浮体
水弹性
multi-hydrodynamics
finite element method
stiffness matrix
very large floating structure
hydroelasticity
