Analysis and Numerical Simulation of Bird Impact Damages of 3-Side-Clamped Titanium Alloy Blades

WANG Weican; LUO Gang; ZHAO Chaojun; FAN Xingchao; CHEN Wei

doi:10.21656/1000-0887.450242

Volume 46 Issue 10

Oct. 2025

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WANG Weican, LUO Gang, ZHAO Chaojun, FAN Xingchao, CHEN Wei. Analysis and Numerical Simulation of Bird Impact Damages of 3-Side-Clamped Titanium Alloy Blades[J]. Applied Mathematics and Mechanics, 2025, 46(10): 1267-1284. doi: 10.21656/1000-0887.450242

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Analysis and Numerical Simulation of Bird Impact Damages of 3-Side-Clamped Titanium Alloy Blades

doi: 10.21656/1000-0887.450242

1. College of Energy and Power Engineering, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China;
2. State Key Laboratory of Aerospace Structural Mechanics and Control for Aerospace Structures, Nanjing University of Aeronautics and Astronautics, Nanjing 210016, P.R.China;
3. Sichuan Gas Turbine Establishment, Aero Engine Corporation of China, Chengdu 610599, P.R.China

Received Date: 2024-09-03
Rev Recd Date: 2024-10-07

Available Online: 2025-11-13

Abstract

Abstract

The damages caused by bird impacts on engine fan blades in aircraft is extremely serious. To study these damages to the blades, an experiment was conducted based on a certain type of engine fan blade clamped by fixtures on 3 sides. Then 2 groups of bird-blade impact tests were completed, and the results of blade damages were obtained. Simultaneously, the LS-DYNA software was used to numerically verify the experimental results. A 3-side-clamped blade model for bird impact was established based on the experiment to study the effects of 4 impact conditions on blade damages. The results indicate that, the effects of experimental conditions on blade damages are fundamentally due to the energy changes transmitted from the bird body to the blade. As the transmitted energy increases, the damage to the blade will change from a bulge to a crack until finally rupture. Through the study of the damages to the blade in specific impact conditions, the 3-side-clamped blade-bird impact test can effectively simulate a part of the tests on bird impacts on rotating blades.
- fan blade,
- bird impact,
- numerical simulation,
- smoothed particle hydrodynamics,
- blade damage

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References(31)

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