长叶片考虑约束预扭的扭转恢复计算

The Calculating about Long Rotating Blades by Considering Restrained Pre-Twisting

传统的长叶片扭转恢复计算是以自由叶片为模型的，它已不适合目前应用较广的整圈连接叶片结构。建立了适合围带和拉筋整圈连接结构的长叶片考虑约束预扭的扭转恢复计算模型，给出了各种约束条件的求解方法和典型算例。

The model of free blade, a traditional method, has been used in calculating the twist-back of long rotating blade. Now, it has already been unsuitable for the application of continuously coupled blade structure. In this paper, a calculating model has been established. It is quite suitable for the twist-back calculating of long rotating blade by considering restrained pre-twisting by its lacing wire or/and shroud. Some solved methods under different restrained conditions and a typical calculating result have been given.