【摘要】 本文按水弹性理论研讨了二维闸板结构同一侧三维流体相互作用下的动力耦合问题,得出图1和2所示水域情况下简支矩形闸板或板条在不同水深时的特征值与特征向量的计算公式,并编制出相应的FORTRAN程序,给出一些常用动水压力系数表。文中还考虑了正交加筋板以及Winkler弹性地基上正交异性板的动力分析。通过算例给出动水压力的影响范围以及水深的变化对于系统振型及频率的影响。更多还原

【Abstract】 This paper discusses the problem of the free vibration of flat gate-plates, which is regarded as a hydro-elastic system. In this system dynamic coupled interaction between flat gate-plates structure and fluid is considered. The paper also consits of the following. 1. The formula of hydrodynamic pressure of ideal fluid is derived from the three-dimensional condition considering the two-dimensional elastic deformation of flate gate plates. 2. The calculation formulas of eigenvalue and eigenvector of simply supported rectangular plates or panels in the region and under different depth of water as shown in Fig. 1 & 2 are presented. The FORTRAN program for computation and the influence values of hydrodynamic pressure in form of table are also given. 3. The dynamic analysis of orthogonally stiffened plates and an orthotropic plate on Winkler’s elastic foundation are considered. 4. Two examples are given, which show that satisfactory accuracy may usually be expected for engineering purpose provided that the influence range of hydrodynamic pressure arrives at a distance of 4h along X-axis (here h is the depth of water), and that the influence of change of water depth on the frequency and mode of the vibrating system is significant.更多还原