Abstract Efficient progressive failure analysis of multi-stringer stiffened composite panels through a two-way loose coupling global-local approach
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Efficient progressive failure analysis of multi-stringer stiffened composite panels through a two-way loose coupling global-local approach

机译：通过双向松耦合全局局部方法对多桁加劲肋复合板进行有效的渐进式失效分析

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AbstractA two-way coupling global-local finite element approach which has demonstrated its potential on the basis of representative test cases in earlier work, is used for the progressive failure analysis of large stiffened composite panels. In order to realize the capability of the approach to analyze larger panels, the efficiency of the analysis is enhanced and improved rules for the choice of the size of local models are developed.The potential to carry out a progressive failure analysis for large stiffened panels is illustrated firstly through the analysis of a two-stringer panel with a local defect, in which the adjusted rules to define the local models are applied, and subsequently concretized by applying the approach to a large stiffened composite panel with five stringers. A comparison between the results of the global-local coupling analysis and a reference analysis with shell elements including degradation is presented and the results are discussed. The results of the numerical analyses of the large panel are also compared with experimental results available.
机译： 摘要 双向耦合全局局部有限元方法已经在早期工作的代表性测试案例的基础上证明了其潜力。用于大型加劲复合板的渐进式破坏分析。为了实现分析大型面板的方法的功能，提高了分析效率，并开发了改进的局部模型尺寸选择规则。 首先通过对具有局部缺陷的两纵梁面板的分析来说明对大型加劲板进行渐进式失效分析的可能性，其中通过调整后的规则来定义局部缺陷应用模型，然后通过将该方法应用于带有五个纵梁的大型加劲复合板来具体化。进行了全局-局部耦合分析的结果与包含壳单元（包括退化）的参考分析之间的比较，并讨论了结果。大面板的数值分析结果也与可用的实验结果进行了比较。

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