本文結合有限元素分析軟體 ANSYS 及多體動力學系統分析軟體 RecurDyn,探討風力發電機的運動模擬及靜態、動態之結構負載。在靜態結構分析方面,以 ANSYS 求解葉片模態振型、頻率、阻尼,將材料、模型、元素、結果檔案、匯入 RecurDyn,求解風力機塔架 ( Tower )、葉片( Blade ) 於結構負載下的應力、應變、總變形量,另以 ANSYS Workbench 於全域施加一標準地球重力,求解風力機受重力影響下的結構應力、應變、變形量,將兩者的所求得的解做一比對,以此驗證分析的正確性。在動態分析方面,把關鍵部位替換成撓性體,模擬葉片、塔架在風力機運轉中的應力分佈及總變形量。
In this research study, the finite element analysis software ANSYS and multi-body system dynamics simulation software RecurDyn were used to explore motion simulation, static and dynamic structural behaviors of wind turbine. In the static structural analysis, ANSYS was used to solve the blade mode shapes, natural frequencies, damping coefficients. Next one could import the material, models, elements, and the corresponding result files to RecurDyn and solve for the structural loads, stresses, strains, and total deformation of the wind turbine, tower, and blades. In the other method, the numerical model used the ANSYS Workbench to impose a standard gravity on the whole system in order to solve for the structural stress, strain, and deflection under the influence of gravity. The dynamic solutions from the two different methods could be compared and verified. The results from the different analysis were almost the same. For the flexible dynamic analysis, the key parts were replaced by the flexible body. The dynamic simulation was demonstrated by using the CAE model of the tower and wind turbine blades in this investigation.