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演講公告
  • 標題:Computational Mechanics for the Modeling and Visualization of Pulverizing Airplane Crashes: The Case of Germanwings Flight 9525
  • 公告日期:2016-10-21


Speaker: Prof. Goong Chen (陳鞏教授)

(Department of Mathematics and IQSE, Texas A&M University)

Title: Computational Mechanics for the Modeling and Visualization of Pulverizing Airplane Crashes: The Case of Germanwings Flight 9525

Time: 16:00–17:00, Monday, December 12, 2016

Venue: Room 070221, 2F, Zhixi Building

RefreshmentRefreshments will be served in Faculty Lounge 30 minutes before the talk.

Abstract:

The flight configuration of aircraft crashing into land or mountain is a large-scale complex physical system from the modeling, simulation and visualization point of view. The most tragic scenario of a crash is “pulverization” such as the one suffered by the Germanwings Flight 9525 in March 2015, where the Airbus A320 airliner broke into bits and small pieces. However, recent advances in the software development for computational mechanics/physics/mathematics/engineering has made the resolution of this complex task manageable. In this talk, we show pulverizing airliner crashes by visualization through supercomputer applications based on the numerical modeling tool LS-DYNA. From visualization, we conduct a forensic investigation and make assessments of how the Germanwings Flight 9525 “pulverized" when the airplane crashed into a ravine of the French Alps.

 Our numerical schemes are validated against a 1993 crash experiment of an F4 Phantom II fighter jet into a wall, from which we have developed a method by hybridizing two primary methods: the Finite Element Analysis (FEA) and the Smoothed Particle Hydrodynamics (SPH), enabling us to satisfactorily achieve validation and also enhance visualization by showing a “debris cloud” feature. We discuss the effects of terrain on pulverization based on the recovered flight data recorder. Calculations from the supercomputer are then made into animation videos so that the dynamic process of pulverizing crashes can be clearly viewed for the purpose of investigation. These videos will be shown at the presentation. Finally, we point out that our study has a potential of being made into real-time flight crash simulators to help the study of crashworthiness and survivability for future aviation safety.

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