Numerical and experimental modeling for bird and hail impacts on aircraft structure

  1. Get@NRC: Numerical and experimental modeling for bird and hail impacts on aircraft structure (Opens in a new window)
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Proceedings titleStructural Dynamics
Series titleConference Proceedings of the Society for Experimental Mechanics Series
Conference28th IMAC, A Conference on Structural Dynamics, 2010, 1 February 2010 through 4 February 2010, Jacksonville, FL
Pages14031410; # of pages: 8
SubjectAircraft structure; Bird strike; Hail impact; Impact simulation; Numerical and experimental modeling; Smooth particle hydrodynamics method; SPH methods; Aircraft accidents; Structural dynamics; Structure (composition)
AbstractAircraft bird-strike events are very common and dangerous. Hailstone impacts represent another threat for aircraft structures. As part of the certification process, an aircraft must demonstrate the ability to land safely after impact with a foreign object at normal flight operating speeds. Since experimental studies can be cost prohibitive, validated numerical impact simulation seems to be a viable alternative. Modelling of these soft body impacts still represents a challenge, involving modelling of both the target and the projectile. Here the smooth particle hydrodynamics method (SPH), which has been used successfully in ballistic applications involving bird strike scenarios, is extended to hail impact. The paper thus presents the meshless SPH numerical method as a novel modeling approach. The method is applied to model bird and hail impacts which are problems that traditional FEM based modeling methods typically struggle to solve because of involved mesh distortion problems. The numerical results are then evaluated by comparing with the data collected during recent experimental tests. The data acquisition methods are also described and evaluated for applications where the short duration of the impact presents a challenge. The accuracy of the numerical results allows us to conclude that the models developed can be used in the certification and/or design process of moving (aircraft) and stationary (wind turbines) composite structures subject to bird and hail impact. ©2010 Society for Experimental Mechanics Inc.
Publication date
AffiliationNational Research Council Canada (NRC-CNRC); Aerospace
Peer reviewedYes
NPARC number21271992
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Record identifierb15bcba1-63a8-4f4c-8727-b5362cfa6c60
Record created2014-05-16
Record modified2016-05-09
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