Bird Impact Analysis on a Bladed Disk

Abstract

A Smooth Particle Hydrodynamics (SPH) method has been developed to provide a transient structural analysis of fan blades during bird strikes. The bird is modeled by a set of lagrangian particles and a specific state of equation evaluates the pressure in the projectile. The SPH method has been coupled with the Finite Elements method by a contact algorithm and implemented in the fast dynamic code EUROPLEXUS. Unlike the classical Lagrangian formulations, this model avoids the severe distortions of projectile mesh during impact phase. An uniform bird slicing by the rotating blades is not assumed prior to the calculation. The method has been applied to compute the response and the residual deformations of a bladed disk.

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Document Details

Document Type
Technical Report
Publication Date
Mar 01, 2003
Accession Number
ADP014172

Entities

People

  • D. Chevrolet
  • John Bonini
  • S. Audic

Tags

Communities of Interest

  • Weapons Technologies

DTIC Thesaurus Topics

  • Bird Strikes
  • Blades
  • Computations
  • Engineering
  • Equations
  • Equations Of State
  • European Communities
  • Experimental Data
  • Fan Blades
  • Fans
  • Geometry
  • Hydrodynamics
  • Mechanics
  • Particles
  • Projectiles
  • Simulations
  • Turbofan Engines

Fields of Study

  • Physics

Readers

  • Aerodynamics.
  • Aerospace Engineering
  • Finite Element Method (FEM) for solving Partial Differential Equations (PDEs)