Numerical Simulation Method for Aeroengine Blade Impacted by Large Gravel

When the aeroengine works in the harsh environment, it will inevitably inhale the particles such as gravel, hail and debris with large particle size and high hardness, which will cause impact damage to the blades and seriously affect the engine performance. Numerical simulation of this problem exists in the solid structure of the large deformation of the crushing and the movement of the damage products and other computational difficulties. In order to solve these difficulties, this paper adopts Finite Element Method (FEM) to simulate the large gravel and engine blade, simulates the motion of the damage products through the Smoothed Discrete Particle Hydrodynamics (SDPH) method, adopts the new FEM-SDPH transformation algorithm proposed independently to simulate the damage of the blade, and then through the transfer of data such as the velocity, coordinates, and the contact force, develops the SDPH-FEM numerical simulation of the problem of aero-engine blades affected by the impact of large pieces of gravel. The algorithm is used to numerically simulate the damage of compressor blade by large gravel impact, and the shape is obtained in good agreement with the actual, which verified the accuracy and practicability of the numerical method, and provided a reference basis for the prevention of damage of aeroengine blade by large gravel impact.