复合材料薄壁梁的翘曲

Warping Problems of Thin-Walled Laminated Composite Beams

将薄壁结构杆件的平衡理论引入复合材料薄壁梁的分析中，来分析复合材料薄壁梁剖面的平面外翘曲规律．针对复合材料叠层对翘曲规律的影响，将复合材料薄壁梁视为叠层壳，用三维实体元对梁剖面的翘曲问题进行研究．数值实验结果证明：材料的叠层对薄壁梁截面翘曲影响不大，平衡理论可在复合材料薄壁结构中应用．

The paper constructs a new finite element model with warping effects for thin walled laminated composite beams on the basis of the equilibrium theory of elastic thin walled members. For the effects of laminate to warping displacements of cross section, the three dimensional solid element was employed to study the deformation of beam cross section. Numerical results demonstrate that the influence of laminate to warping displacements of beam is not big, the equilibrium theory of elastic thin walled members can be applied to thin walled composite structures.