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本文就复合材料加筋壳的非线性稳定理论的实际应用,进行详细讨论。该理论是一个一般化的非线性分析方法,包含有几何和材料非线性,初始缺陷和横向剪切影响诸因素;适用于各向同性材料或各向异性材料加筋或非加筋的壳类结构,在轴压或侧压,或轴侧压联合作用下稳定性分析。本文给出四个算例,计算结果表明该非线性理论与当前公开发表的研究和实验结果吻合很好。本文对文献的论述进行详细注释和讨论。并推荐建立在该非线性理论基往上的通用分析程序BASCOSI,该程序简捷,通用性好,可以在微机上运算,便于工程应用。
In this paper, the practical application of nonlinear stability theory of composite stiffened shells is discussed in detail. This theory is a generalized non-linear analysis method that includes such factors as geometry and material nonlinearities, initial imperfections and transverse shear effects; isotropic or non-stiffened shell materials for isotropic or anisotropic materials Structure, stability analysis under axial pressure or lateral pressure, or axial pressure. In this paper, four examples are given. The calculation results show that the nonlinear theory is in good agreement with the current published research and experimental results. This article gives a detailed explanation and discussion of the literature. The BASCOSI, a general analysis program based on this nonlinear theory, is recommended. The program is simple, easy to use and can be operated on a microcomputer for engineering application.