Abstract
Since the 9/11 incident, many engineering research works have been conducted on the impact resistance of large-span space structures. In the present study, a small airplane, Bombardier Challenger 850, was chosen as the test subject. An airplane crash on a single-layered Kiewitt-8 reticulated dome with span 60 m considering roof sheathing effect was simulated using ANSYS/LS-DYNA software. The principles of establishing the numerical model of small airplanes were determined. In addition, the impact styles of small airplane and impact positions on the dome were investigated. The failure modes of reticulated dome with roof sheathing due to small airplane crash were identified. Furthermore, the failure modes between reticulated domes with and without roof sheathing were compared and the effect of roof sheathing on the failure modes of reticulated dome under a small airplane crash was investigated.
Highlights
Terrorist attacks have increased in the past few years, leading to enormous economic and infrastructure losses, and causing a huge impact on the spirit of people
In order to compare the obtained results for failure modes, we developed an FE model of a single-layer Kiewit-8 reticulated dome with 60-meter span and investigated the effect of roof sheathing while keeping other parameters same as that reported in Reference [10]. e thickness of roof sheathing could be changed, and in this study, we set the value of this parameter at 2 mm
A Bombardier Challenger 850 small passenger airplane was selected as the prototype to develop a model for its impact on a reticulated dome. en, a numerical model was developed for reticulated domes subjected to small airplane crashes, and the behavior of the dome under four different impact conditions was simulated
Summary
Terrorist attacks have increased in the past few years, leading to enormous economic and infrastructure losses, and causing a huge impact on the spirit of people. Ere has been an increasing interest in research on the impact resistance of large space structures since 9/11 incident. Many previous studies, such as Lynn and Isobe [2], Samuel and Astaneh-Asl [3], Zhou et al [4], Bonder and Symonds [5], and Zhao et al [6], have concentrated mainly on the frames of buildings under accidental impacts. Lin et al investigated the effects of size and material properties of the impact body on the damage modes of single-layer Kiewit-8 reticulated domes using 3D numerical simulations [12]. Different impact styles at different positions, different failure modes under actual airplane crashes, and the effect of roof sheathing on failure modes have been investigated
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