Crashworthiness design of transport aircraft subfloor using polymer foams
作者： Jianqiang Zheng , Jinwu Xiang , Zhangping Luo , Yiru Ren
DOI: 10.1080/13588265.2011.593979
关键词:
摘要: An innovative crashworthiness subfloor design concept was developed for middle or larger transport aircrafts. Closed-cell Rohacell-31 polymer foam blocks were introduced into the aircraft to enhance energy absorption capability and mitigate peak acceleration during crash. Eight different configurations of blocks’ longitudinal distribution considered. To provide a cost-effective method assessing fuselage crashworthiness, compelling finite element models an these vertical drops then simulated using non-linear code LS-DYNA. Impact responses, including failure behaviour, characteristics, obtained detailed effects block on discussed. The analysis results showed that optimal length is 100–126 mm in our studied cases. mode appeared be sy...
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