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本文选择线性应力函数的交感应力模型平面应力矩形单元与薄扳弯曲矩形单元,将它们的刚度矩阵迭加形成交感模型薄壳单元Hmsl,并将之应用于具有正交边界的柱面薄壳和平板空间组合结构的分析。文中介绍了该分析方法的基本原理,推导了壳体中面内有初始应变时的相当结点力公式,讨论了壳单元开孔的计算方法并扼要介绍了计算机程序的功能。文中通过对空心盒式梁在不同网格下的计算,同采用等应变三角元[2]的结果以及解析解[1]作了对比。文中提供了用此方法计算某五层大模板房屋模型在地震作用下的变位和墙体应力的数值结果。它与实测数据[3]能很好地吻合.
In this paper, the linear stress function of the cross-induced force model plane stress rectangular element and the thin plate bending rectangular element are selected, and their stiffness matrix is superposed to form the sympathetic model thin shell element Hmsl, and it is applied to the cylindrical shell with orthogonal boundaries. The analysis of the flat space structure. The basic principle of the analysis method is introduced in this paper. The formula for the equivalent node force when the initial strain is in the shell is deduced. The calculation method of the shell element opening is discussed and the function of the computer program is briefly introduced. In this paper, the calculation of the hollow box beam under different grids is compared with the result of the equal strain triangle element [2] and the analytical solution [1]. This paper presents the numerical results of the calculation of the displacement and wall stress of a five-story large-model house model under earthquake. It fits well with the measured data [3].