NDLI: Failure Analysis of Rotorcraft Composite End Plate Structure Under High-Velocity Bird Impact

Content Provider	Springer Nature Link
Author	Kumar, R. Vijaya
Copyright Year	2016
Abstract	The paper discusses finite element (FE) modeling for predicting structural damage and correlation studies of dynamic responses in rotorcraft composite structures under high energy bird impact. Before these applications of numerical modeling techniques the simulations are to be accepted by the industry for design development and certification of composite aircraft structures, composites damage models have to be developed and implemented in commercial FE codes, and validation studies at specimen and substructure level have to be performed. Since the experimental tests are expensive and difficult to perform, numerical simulations can only provide significant help in designing high-efficiency bird-proof structures. The design concept is based on the absorption of the major portion of the bird kinetic energy by the composite skins, in order to protect the inner honeycomb core from damage, thus preserving the end plate functionality for safe landing. To this purpose, the end plate skin is fabricated from composite layers, which unfold under the impact load and increase the energy absorption capability. The numerical modeling of bird strike using the Lagrangian approach and smooth particle hydrodynamics formulation and the critical design parameters are considered in carrying out the analysis. A numerical model of this problem has been developed with an explicit finite element code Autodyn. Analysis is carried out for the developed model using the test parameters. Numerical results by means of bird modeling approaches and accurate simulations of composite structures phenomena during impact are substantiated with experimental test results. The results obtained from the analysis and test shows close conformity implying their appropriateness in the simulation of bird strike.
Starting Page	864
Ending Page	873
Page Count	10
File Format	PDF
ISSN	15477029
Journal	Journal of Failure Analysis and Prevention
Volume Number	16
Issue Number	5
e-ISSN	18641245
Language	English
Publisher	Springer US
Publisher Date	2016-09-02
Publisher Place	New York
Access Restriction	One Nation One Subscription (ONOS)
Subject Keyword	Bird strike Failure analysis EOS SPH Bird model Tribology, Corrosion and Coatings Characterization and Evaluation of Materials Mechanics Structural Mechanics Quality Control, Reliability, Safety and Risk
Content Type	Text
Resource Type	Article
Subject	Mechanics of Materials Materials Science Safety, Risk, Reliability and Quality Mechanical Engineering

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