Crashworthiness Analysis and Enhancement of Aircraft Structures Under Vertical Impact Scenarios 机翻标题: 暂无翻译,请尝试点击翻译按钮。

2020-02-10

This research focuses on the crashworthiness study and enhancement of commercial aircraft structures by developing crushable energy absorbers to work as vertical struts (stanchions). To assess their contribution on a representative crash scenario, a numerical simulation of a Boeing 737-200 drop test developed and verified with experimental data is used as a benchmark. The numerical model is then enhanced with four hybrid energy absorbers designed for programmed and progressive collapse, which are added in the cargo compartment connecting the floor beams and the frames. These devices are composed of a square aluminum tube filled with a composite skeleton and foam extrusions for maximized energy absorption. The enhanced aircraft is later simulated under hard-landing and water-ditching scenarios, analyzing the benefits resulting from the absorbers according to structural efficiency and biometric criteria. The results show increased plastic dissipation values by the main structural components given the modified collapse mechanism obtained when adding the crushable absorbers. Peak acceleration values are also reduced, consequently lessening the passenger injury prediction at the studied locations.

暂无翻译结果,您可以尝试点击头部的翻译按钮。

点击如下链接查看来源站点的原文: 原文链接

最新评论

暂无评论。

登录后可以发表评论


意见反馈
返回顶部