Finite-element simulation for modeling composite plates subjected to soft-body, high-velocity impact for application to bird-strike problem of composite fan blades

Abstract We presented a numerical simulation to address the impact-induced deformation and damage of composite plates subjected to soft-body, high-velocity impacts for application to the bird-strike problem of composite fan blades. A new stabilized contact algorithm was developed based on the Lagrange multiplier method to predict appropriate impact forces applied to the plate, in order to solve soft-body impact at high velocity without causing severe numerical instabilities. The bird-strike impact on composite fan blade was simply modeled by discussing the damage characteristics of a unidirectional composite plate. Combining the model of a soft-body impactor with an appropriate contact algorithm, we could capture the transition from the global bending mode at low velocity to the local deformation mode at high velocity, enabling a discussion of the ballistic limit using the damage analysis of the laminate. As the impact velocity increased, the damage in the composite changed from bending-induced matrix-cracking to an intensive fiber-breakage mode causing local shear perforation. The damage mode transition allows us to detect the transition velocity as a ballistic limit, which is one of the critical factors for discussing the bird-strike resistance of composite fan blades.

[1]  P. Torvik.  Shock Propagation in a Composite Material , 1970 .

[2]  Alastair Johnson,et al.  Modelling Soft Body Impact on Composite Structures , 2003 .

[3]  Nobuo Takeda,et al.  Numerical simulation of interlaminar damage propagation in CFRP cross-ply laminates under transverse loading , 2007 .

[4]  James S Wilbeck,et al.  Impact Behavior of Low Strength Projectiles , 1978 .

[5]  C. Ruiz,et al.  Soft Body Impact on Laminated Composite Materials , 2007 .

[6]  Francis Collombet,et al.  Impact behavior of laminated composites: Physical basis for finite element analysis , 1998 .

[7]  F. J. Heymann,et al.  High‐Speed Impact between a Liquid Drop and a Solid Surface , 1969 .

[8]  Shaker A. Meguid,et al.  FE analysis of geometry effects of an artificial bird striking an aeroengine fan blade , 2008 .

[9]  M. A. McCarthy,et al.  Modelling of Bird Strike on an Aircraft Wing Leading Edge Made from Fibre Metal Laminates – Part 2: Modelling of Impact with SPH Bird Model , 2004 .

[10]  F. Chang,et al.  A Progressive Damage Model for Laminated Composites Containing Stress Concentrations , 1987 .

[11]  Ning Hu,et al.  Low-velocity impact-induced damage of continuous fiber-reinforced composite laminates. Part I. An FEM numerical model , 2002 .

[12]  Ning Hu,et al.  Low-velocity impact-induced damage of continuous fiber-reinforced composite laminates: part II verification and numerical investigation , 2002 .

[13]  Stephen R Hallett,et al.  Prediction of impact damage in composite plates , 2000 .

[14]  John P Barber,et al.  Characterization of Bird Impacts on a Rigid Plate: Part 1 , 1975 .

[15]  Michael A. Puso,et al.  A general conjugate‐gradient‐based predictor–corrector solver for explicit finite‐element contact , 1999 .

[16]  P. Geubelle,et al.  Impact-induced delamination of composites: A 2D simulation , 1998 .

[17]  Andrew J. Gunnion,et al.  Bird-strike simulation for certification of the Boeing 787 composite moveable trailing edge , 2008 .