1、各向异性弹性柱体扭转的理论 复合材料旋翼桨叶的扭转问题简化为各向异性的弹性柱体的扭转问题,忽略桨叶的根部影响,是一个弹性柱体的自由扭转问题。 假设各向异性的弹性柱体,其正截面的形状不受限制(图1)可以是单连通的;亦可以是复连通的(图2)。柱体内部不受外力(包括重力)作用。柱体周围侧面也是悬空的,即 Theory of torsional deformation of anisotropic elastic cylinder Rotor blade torsion problem of composite material is reduced to the problem of torsion of anisotropic elastic cylinder. Ignoring the root of blade, it is a problem of free torsion of elastic cylinder. Assuming an anisotropic elastic cylinder, the shape of its normal cross-section is not limited (Figure 1) can be single connectivity; also can be complex connectivity (Figure 2). Cylinder interior from external forces (including gravity) role. The side around the cylinder is also vacant, that is