波浪与弹性板作用的数值模拟  

NUMERICAL SIMULATION OF THE INTERACTION BETWEEN WAVES AND FLOATING ELASTIC PLATE

作　　者：沈洁[1] 勾莹 滕斌[1] 

机构地区：[1]大连理工大学海岸和近海工程国家重点实验室,辽宁大连116023

出　　处：《工程力学》2012年第12期287-294,共8页Engineering Mechanics

基　　金：国家自然科学基金项目(50921001;51009023)

摘　　要：该文采用高阶有限元和边界元联合的方法求解波浪与弹性板的相互作用。其中流场采用边界元法求解,结构弹性响应方程采用基于Mindlin板理论的有限元方法求解,通过模态叠加技术实现了弹性板变形与流场相互作用的解耦。通过对一矩形板的计算,验证了该文方法与他人试验结果和数值模拟结果都吻合良好。利用这一模型进一步分析了波浪与弹性圆形板的作用问题,并对圆形板运动响应的收敛性进行了分析。A higher order combined finite element-boundary element method is used to study the interaction between waves and an elastic plate. The fluid region is solved by a boundary element method, whereas the hydroelastic structural response is obtained by finite element method based on Mindlin＇s plate theory. The modal superposition technique is adopted to decouple the interaction between waves and the elastic plate. In order to validate this numerical model, a rectangular elastic plate is considered. Computational results show a good agreement with that of published experimental and numerical data. Then a circular elastic plate is calculated by this numerical model, and the converzence orooerties of elastic resoonses are studied.

关 键 词：流体力学 弹性板 水弹性分析 有限元边界元混合模型 MINDLIN板理论 

分 类 号：O35[理学—流体力学]