对单室箱形结构中的薄壁复合梁的静力和动力特性进行分析。结构模型中考虑了多种非典型作用,如:材料各向异性、横向剪切、翘曲的抑制作用、非均匀扭转模型和转动惯量。利用扩展的Hamilton原则推导出主导方程,并利用扩展的Galerkin方法进行解释。考虑了纤维方向对静挠度和自然频率的影响,得出一些重要结论。 The static and dynamic characteristics of thin-walled composite beams in a single-box box structure are analyzed. A variety of atypical effects are considered in the structural model, such as material anisotropy, transverse shear, warpage inhibition, non-uniform torsion model and moment of inertia. The dominant equation is deduced by using extended Hamilton principle and the extended Galerkin method is used to explain it. Considering the effect of fiber orientation on static deflection and natural frequency, some important conclusions are drawn.