作　　者： ; ; ; ;

机构地区： 河南科技大学规划与建筑工程学院

出　　处： 《船舶力学》 2013年第1期148-154,共7页

摘　　要： 文章研究了连续静水压力下,水下功能梯度(FG)圆柱壳的振动特性。在Flügge理论的基础上,考虑流体的影响,利用波动法推导出了水下FG圆柱壳耦合系统的振动方程。通过变换轴向波数,得到不同边界条件下FG圆柱壳的固有频率值。在经过与各向同性圆柱壳的固有频率的分析结果进行对比、验证了文中研究的有效性和正确性的基础上,讨论了静水压力下的FG圆柱壳的固有频率。通过算例,分析了连续静水压力下,材料组分、壳体厚度与半径比、边界条件等因素对FG圆柱壳的固有频率的影响。 The vibration of submerged functionally graded （FG） cylindrical shell under condition of a uni- form external hydrostatic pressure is presented. Based on the Fltigge＇s shell theory and wave propagation method, the equation of motion of the coupled system with the fluid effect is derived. By means of conver- sion switch on axial wave number, the coupled frequency of submerged FG cylindrical shell with various boundary conditions is obtained. This present analysis is validated by comparing results with those in the literature. The vibration characteristics of FG cylindrical shells subjected to hydrostatic pressure are exam- ined. The effects of constituent materials, ratio of length to radius and boundary condition on the natural frequencies of submerged FG cylindrical shell are illustrated by examples.

关 键 词： 静水压力 水下 功能梯度材料 圆柱壳 固有频率 波动法

领　　域： [理学] [理学] [一般工业技术]