摘要
通过对弹性体振动的有限元方程和不可压缩粘性流体的有限元方程的分析,建立了弹性体与粘性流体流固耦合的有限元方程。以水轮机导叶为例,运用ANSYS有限元软件计算了其在空气中的振动特性以及流固耦合振动的频率和振型,并对二者进行比较,分析了影响振动的因素。
FEM equation of fluid-solid coupled vibration was consisted by analyzing FEM equation of incompressible viscosity fluid and elastomer. Based on the equation, taking example of vane, its dynamic characteristics in the air and frequency and swing of fluid-solid coupling vibration are calculated by using ANSYS. Finally, calculation of fluid-solid coupling vibration of blade was forecasted on the step by comparing the two vibration characteristics, at one time, the main factor that affects the vibration was analyzed. So these result have a definite meaning for design and preventing crack in the component of hydraulic turbines.
出处
《水电能源科学》
2004年第4期64-66,共3页
Water Resources and Power
基金
国家自然科学基金资助项目(50309012)。
