摘要
应用有限元与边界元结合的湿模态法对浸入静水域中螺旋桨桨叶进行固有动力特性研究 ,编制了 3种单元组合模型与流固耦合计算分析程序 ;实桨计算结果与桨叶固有频率激振试验结果比较表明 ,计算值与实测值基本吻合 ,所采用的块体元、过渡元和厚壳元 3种单元组合形成的有限元离散模型和 Moriono双曲面元法在计算精度和计算效率方面比块体和厚壳有限元模型有所改善 .
The natural vibration characteristics of propeller blades, including hub, in still water field are analyzed with FEM BEM coupling method, and model propeller experiment in the air and water are performed respectively. A combined FEM model of propeller is presented, which consists of the 20 node brick element, 13 node and 10 node transition element as well as 8 node thick shell element. The hydrodynamic action is represented in the way of add mass. The FEM BEM program is coded. Compared with the experimental results, it is shown that this method improves the numerical precision and efficiency.
出处
《大连理工大学学报》
CAS
CSCD
北大核心
2000年第6期737-740,共4页
Journal of Dalian University of Technology
关键词
螺旋桨桨叶
动力特性/过渡单元
流固耦合
面元法
propeller blades
dynamic characteristics/transition element
fluid solid coupling method
panel element method
