用综合离散法分析舰船筒形桅的固有振动  

ANALYSIS OF NATURAL VIBRATION OF CYLINDRICAL MAST BY SYNTHETIC DISCRETE METHOD

作　　者：杨涵青[1] 吴华干 潘碧兰 

机构地区：[1]武汉船舶设计研究所 [2]中山大学

出　　处：《中国造船》1989年第3期101-108,共8页Shipbuilding of China

摘　　要：本文把舰船筒形桅视为薄壁结构,采用薄膜应力和横截面形状不变两个假设,应用综合离散法对桅的固有振动进行分析。结果表明,这是一种既能大幅度降低独立未知量数目从而节省机时,又有足够精确度的计算方法。This paper presents the analysis of natural vibration of cylindrical mast under the assumptions of membrance stress state and unvariability of the transverse section shape by using synthetic discrete method Some numerical results calculated by micro computer are given and compared with the solutions of the SAP-5 program.It shows that they are in good agreement.It may be concluded that the proposed method is a good one for mast calculation, which can greatly reduce the number of the unknown independent variables to save the computation time with sufficient accuracy.

关 键 词：离散法 横截面形状 单元刚度矩阵 局部坐标系 薄膜应力 薄壁结构 线性插值 总体坐标 四边形单元 四边形网格 

分 类 号：U671[交通运输工程—船舶及航道工程]