本文采用零维边界元,处理组合体弹性联接,使计算模型符合实际边界约束。由此对组合机身进行结构有限元分析,可比较精确地计算出机身各构件的变形及应力。并通过计算出边界单元的力,研究工作载荷在各构件间的分配,为构件的强度、刚度设计提供较可靠的依据。 In this paper, zero-dimensional boundary elements are used to deal with the elastic coupling of the assembly, so that the calculation model conforms to the actual boundary constraints. Based on the structural finite element analysis of the combined fuselage, the deformation and stress of each component of the fuselage can be accurately calculated. And by calculating the force of the boundary element, the distribution of the working load among the various components is studied, which provides a reliable basis for the strength and stiffness design of the component.