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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。
In this paper, a high-order finite element and boundary element method is used to solve the interaction between wave and elastic plate. The flow field is solved by the boundary element method. The structural elastic response equation is solved by the finite element method based on the Mindlin plate theory. The decoupling of the deformation of the elastic plate and the flow field interaction is achieved by the modal superposition technique. The calculation of a rectangular plate verifies that the proposed method is in good agreement with the experimental and numerical results of others. This model is used to further analyze the effect of wave and elastic circular plate, and the convergence of circular plate motion response is analyzed.