大变形复合材料柔性梁刚度计算与试验验证

Calculation and Experimental Verification of Stiffness of Composite Flexbeam with Large Deformation

根据复合材料柔性梁的结构与变形特点,基于Halpin-Tsai等公式对材料模量进行修正,采用桨叶专用软件Blade computer aided desigh(BCAD)对柔性梁的刚度(除扭转刚度)进行计算,扭转刚度采用经验公式进行计算。结果表明该方法不仅能提高柔性梁剖面刚度计算的准确性,而且也为无轴承旋翼/尾桨的动力学、载荷计算的准确性提供了保证。

The material modulus is corrected based on the Halpin-Tsai formula according to the structure and deformation characteristics of composite flexbeam. The stiffness of flexbeam is calculated by the blade computer aided desigh （BCAD） special software except for the torsional stiffness which is calculat- ed by the empirical formula. It is proved that the method can improve the calculation accuracy of the flexbeam section stiffness, and also can guarantee the accuracy of the dynamics and the lord calculation of bearingless rotor/tail rotor.