摘要
为进行三维风电叶片振动系统固有频率相关性分析,采用MATLAB和ANSYS共同建立了风电叶片三维有限元参数模型,并分析了叶片固有振动特性。考虑系统随机结构参数对风电叶片固有振动的影响,运用将Monte Carlo与ANSYS相结合的方法对叶片固有振动特性进行相关性分析,进而判断其对随机结构参数的敏感性,形成了一种叶片结构参数与固有频率相关性分析的新方法。该方法无须求导运算,无须改变现有固有频率求解程序,即可进行相关性分析,利于工程人员掌握和应用。
In order to analyze the natural frequency correlation of wind turbine blade vibration system, a 3-D parametric finite element model is established and natural vibration characteristic is analyzed by MATLAB and ANSYS. As the random structural parameters have effects on natural vibration of the blade, a new method for analysis of natural frequency correlation of wind turbine blade is proposed, which combining Monte Carlo with ANSYS to analyze the natural vibration characteristic of the blade and then can determine the sensitivity to the parameters. By this method, differentiate operation is not necessary and the conventional computing procedure used to calculate the frequencies does not need any improvement. This method is easy to master for engineers.
出处
《可再生能源》
CAS
北大核心
2011年第6期15-19,共5页
Renewable Energy Resources
基金
南京工业大学自然科学基金项目(39724001)
