Damage modeling by extraneous subjects the hollow fan blades of gas-turbine engine

The technique and results of numerical modeling the process of damage the hollow titanic fan blades from aviation gas-turbine engine by extraneous subjects getting to a flowing part: hailstones, ice, stones are stated. Mathematical statement of a problem is formulated, the technique of modeling by means of final elements method is described. The quantitative estimations of damage parameters received as a result of modeling are resulted. The analysis of mechanisms and laws of damage for blades, fields of residual pressure is carried out.