【摘要】 以常重力作用下矩形贮箱类液固耦合系统受到俯仰激励情形为例，本文采用与以往不同的方式，在描述耦合系统中的液体子系统和结构子系统时，分别运用了两种不同形式的Lagrange函数，以此为基础可以得到降阶的系统耦合动力学方程，该方法大大减少了公式的推导工作。通过一个算例，讨论了该耦合系统的非线性动力特性。本方法可推广应用于分析圆柱等其它形状贮箱中液体的三维晃动情形下的液固耦合系统动力学特性。更多还原

【Abstract】 This paper is concemed with the dynamic coupling behavior of partially liquid-filled rectangular container under pitch excitation in the case of constant gravity. A new method is presented to establish the dynamic equations of the coupling system. Based on two different Lagrange functions, the reduced-order nonlinear coupled dynamic equations of the coupling system are obtained, resulting in significant simplification of the formulation of the problem. A numerical example is provided in which the characteristic of the coupling system is discussed. The present method can be extended to the analysis of the dynamic behavior of liquid-structure coupling of cylindrical container in the case of three-dimensional liquid sloshing.更多还原