No abstract

A two-way coupling global-local nite 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 stiened composite panels. In order to realize the capability of the approach to analyze larger panels, the eciency 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 stiened panels is illustrated rstly through the analysis of a two-stringer panel with a local defect, in which the adjusted rules to dene the local models are applied, and subsequently concretized by applying the approach to a large stiened composite panel with ve stringers. A comparison between the results of the global-local coupling analysis and the shell element reference analysis are demonstrated and the results are discussed. The results of the numerical analyses of the large panel are also compared with experimental results available.