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首页> 外文会议>SSTA(Shell Structures: Theory and Applications) Conference; 20051012-14; Jurata(PL) >Limit loads of shells of revolution
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Limit loads of shells of revolution

机译：限制旋转壳的载荷

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摘要

The evaluation of the imperfection sensitivity of shell structures and the estimation of their limit loads are widely discussed phenomena. The perturbation energy concept (Dinkier 1989) enables to assess the imperfection sensitivity of shell structures by means of an energy value, the perturbation energy. A buckling criterion may be developed from the comparison between the perturbation energy and experimental data. This paper focuses on the imperfection sensitivity and limit loads of spherical shells of revolution under radial pressure. The investigations include the influence of the meridional angle and different types of boundary conditions. By comparing the numerical results with the German design rule DIN 18800, values for the perturbation energy are derived to predict the limit loads. These values for the perturbation energy allow to judge whether the German design rule DIN 18800 predicts the limit loads of spherical shells under radial pressure with varying meridional angles and different boundary conditions with the same reliability in respect of the perturbation energy.
机译：壳结构的不完美敏感性的评估及其极限载荷的估计已被广泛讨论。摄动能量的概念（Dinkier 1989）能够通过摄动能量值来评估壳结构的缺陷敏感性。可以从微扰能量和实验数据之间的比较中得出屈曲准则。本文着眼于径向压力下球形旋转壳的不完美灵敏度和极限载荷。研究包括子午角和不同类型边界条件的影响。通过将数值结果与德国设计规则DIN 18800进行比较，可以得出扰动能量的值以预测极限载荷。这些摄动能量值可用来判断德国设计规则DIN 18800是否在径向压力，子午角变化和边界条件不同的情况下以对摄动能量相同的可靠性预测球形壳体的极限载荷。

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