摘要
在对ANSYS的相关单元进行分析的基础上,重点研究悬臂柱模型在不同水位下的模态计算方法,进行数值演算,给出计算步骤和计算结果,并将其与实验结果相比较,验证计算方法的可行性。通过对不同水位下结构模型的前3阶频率值进行比较,得出当水深达到一定深度时,水对结构的自振频率的影响将不能忽略的结论。
Based on the theoretical analysis of the elements in ANSYS,the modal analysis method and steps for the cantilever pillars in different depths of water was studied. Numerical examples were given for the cantilever pillars within different depth,and the results of natural frequencies were compared with the experimental datum to verify the feasibility of the calculation method. The numerical results of the first three natural frequencies and vibration modes of the spindle in water of different depth showed that when water depth reached a certain depth, the effect on natural frequency of structures caused by water can not be neglected.
出处
《船海工程》
北大核心
2008年第6期86-89,共4页
Ship & Ocean Engineering
基金
863项目(2007AA11Z107)
关键词
流固耦合
深水结构
模态分析
ANSYS
fluid-structure interaction
modal analysis
deep-water structure
ANSYS
