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首页> 外文期刊>Computer Methods in Applied Mechanics and Engineering >Conversion from imperfection-sensitive into imperfection-insensitive elastic structures Ⅰ: Theory
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Conversion from imperfection-sensitive into imperfection-insensitive elastic structures Ⅰ: Theory

机译：从对缺陷不敏感的弹性结构到对缺陷不敏感的弹性结构的转变Ⅰ：理论

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A qualitative improvement of the initial postbuckling behavior of imperfection-sensitive elastic structures is their conversion into imperfection-insensitive structures by means of modifications of the original design. Such a conversion is restricted to symmetric bifurcation. Koiter's initial postbuckling analysis is applied in the framework of the FEM to deduce mathematical relations for the transition from imperfection sensitivity to insensitivity, which may be achieved by additional supports of the structure. This conclusion as well as several other conclusions from the theoretical investigation reported in Part Ⅰ of this paper are corroborated by the results from a comprehensive numerical investigation documented in Part Ⅱ of this work.
机译：缺陷敏感性弹性结构初始屈曲后行为的质的改进是通过对原始设计的修改将其转变为非缺陷敏感性结构。这种转换仅限于对称分叉。 Koiter最初的屈曲后分析在FEM框架中进行应用，以推导从不完美敏感性到不敏感性的过渡的数学关系，这可以通过结构的额外支撑来实现。该结论以及本文第一部分报道的理论研究得出的其他结论，也得到了本文第二部分记录的全面数值研究的结果的证实。

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