Fan Blade Bird Strike Analysis Using Lagrangian, SPH and ALE Approaches

Fan blade bird resistance is one of the most important certification requirements for modern jet engines. The development test to meet the requirement is difficult and costly experiment. The expenses can be significantly reduced by using the numerical simulation of fan blade bird strike problem in the design of jet engine. The common technique for such simulations is modeling of bird as a solid cylinder or ellipsoid with material properties similar to water. The paper presents some results of fan blade bird strike analysis using LS-DYNA Lagrangian, SPH and ALE approaches to model the bird. The main objectives of the investigations are to compare the results obtained by means of different approaches and to find out the advantages and disadvantages of every approach.