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该文发展了一种适用于风力机叶片的动力学响应计算方法,该方法考虑到叶片的实际工作状况及计算量的大小,选用修正的动量叶素理论和梁单元作为流体和结构模型,并将动态失速模型与动量叶素理论结合计算气动力;以Marc通用有限元计算程序为基础平台,将气动力计算程序写入子程序中,并根据子程序的调用特点,实现了在每个增量步中气动和结构边界条件的相互交换。最后给出计算算例,得到的计算结果与实际使用情况相符合。
This paper develops a dynamic response calculation method for wind turbine blades. The method takes into account the actual working conditions of the blade and the amount of calculation. The modified momentum valence element theory and the beam element are selected as the fluid and structure models. The dynamic stall model is combined with the momentum valence element theory to calculate the aerodynamic force. Based on the Marc universal finite element program, the aerodynamic calculation program is written into the subroutine. According to the call characteristics of the subroutine, The mutual exchange of aerodynamic and structural boundary conditions in a mass step. Finally, a calculation example is given, and the calculated result is in accordance with the actual usage.