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在最近20年中,结构的抗力等同于具有明显缺陷的几何与材料的非线性分析结果(GM-NIA)。但作为复杂结构的唯一理论分析时,对结果的确认是比较困难的。这些结果必须以定义适当的参考系数的简单分析为参考。其他类似于小位移理论的材料非线性分析(MNA)和线弹性分岔分析(LBA)对GMNIA的解释非常重要。在欧洲规范中,壳体结构的一般性能曲线对那些不同的理论分析作出了解释。采用该性能曲线,可以独立识别壳体结构性能的不同特性,并且可以分析曲线参数间的关系。这种统一的代表性使所有弹塑性屈曲问题变得简单而有意义。概述了性能曲线的局限性,并且提出了打破局限性的改进措施。
In the last 20 years, structural resistance has been equated with the non-linear analysis of geometry and material with significant defects (GM-NIA). But as the only theoretical analysis of complex structures, the confirmation of the results is more difficult. These results must be referenced to a simple analysis that defines the appropriate reference factor. Other material nonlinear analysis (MNA) and linear elastic bifurcation analysis (LBA), which are similar to the theory of small displacement, are very important for the interpretation of GMNIA. In European norms, the general performance curves of shell structures explain those different theoretical analyzes. Using this performance curve, different characteristics of the housing’s structural performance can be independently identified and the relationship between the curve parameters can be analyzed. This uniform representation makes all elastoplastic buckling issues simple and meaningful. Outlines the limitations of the performance curve, and proposes improvements to overcome the limitations.