浮式梁干模态分析和频率选取的记号排序法及应用

为分析浮式结构的水弹性响应，需首先求解其干模态，文章将符合细长假定的箱式浮体结构简化为均匀浮式梁，利用欧拉梁理论求解浮式梁的干模态，根据浮体水弹性分析中选取低阶振动频率的需要，发展了一种记号排取法合理选取浮式梁的低频频率并根据记号求取各阶频率的振动模态。理论应用于实际水弹性分析程度，效果良好。

Dry Modes Analysis of Floating Beam and Earmarked Compositor Method for Frequency Choice

The dry modes of the structure should be solved earlier in the hydroelasticity analysis of a floating structure. The box-type floating structure in accordance with the slender assumption is simplified as a uniform floating beam in this paper. The dry modes of the floating beam are sloved with Eulor-beam theory. For the need of hydroelaticity analysis of a float-body, an earmarked compositor method is introduced to choose the lower vibration frequency and to obtain the vibration mode. The theory is used in hydroelasticity analysis program with good result.