Abstract
Aircraft engine load spectrum is the basis of stress analysis of components, structural design criteria, the durability test of components and complete engine and lifetime analysis. The main features are as follows: 1.it is difficult to obtain; 2. samples are insufficient; 3. parameters amount are huge, complex correlation. As a result, the lifetime prediction for aircraft engine and the new engine development is in urgent need of the simulation method of load spectrum. The mathematical model of aircraft engine, in specific, the use-related multiple parameters load spectrum was established by using the Principal Component Analysis (PCA). By using this model, simulation about the normal, non-normal and measured load spectrum of aero-engine can be made. In this paper, the simulated method of use-related multi-parameter load spectrum based on PCA can simulate the original load spectrum at any time by few sample measured and keep the correlation between parameters unchanged. The result indicated that the cumulative frequency curve of the simulated load spectrum and the cumulative frequency curve of the original load spectrum are in good agreement, which ensures that the fatigue damage caused by the simulation spectrum is consistent with the original spectrum.
Acknowledgements
Support of this project provided byNational Basic Research Program of China, National Nature Science Foundation of China (51675266), the Fundamental Research Funds forthe Center in NUAA (NJ20160038, NS2017011),Foundation of Graduate Innovation Center in NUAA (No. kfjj20170220) are gratefully acknowledged.
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© 2018 Walter de Gruyter GmbH, Berlin/Boston
Articles in the same Issue
- Frontmatter
- Original Research Articles
- Investigations of Trenched Film Hole Orientation Angle on Film Cooling Effectiveness
- Jet Flow Control Using Semi-Circular Corrugated Tab
- Simulation of Use-Related Multi-Parameter Load Spectrum Based on Principal Component Analysis
- Characterization of Tandem Airfoil Configurations of Axial Compressors
- Research on Suppressing Vibration of Mistuning Cyclic-Periodic Structure
- Research on Power Regulation Schedule Control System for Turboprop Engine
- Enhancement of Full Coverage Film Cooling Effectiveness with Mixed Injection Holes
- CFD Analysis and Experimental Validation of the Flow Field in a Rib Roughed Turbine Internal Cooling Channel
- Perforated Wall in Controlling the Separation Bubble Due to Shock Wave –Boundary Layer Interaction
- Calculating Endogenous and Exogenous Exergy Destruction for an Experimental Turbojet Engine
- One-equation turbulence models applied to practical scramjet inlet
Articles in the same Issue
- Frontmatter
- Original Research Articles
- Investigations of Trenched Film Hole Orientation Angle on Film Cooling Effectiveness
- Jet Flow Control Using Semi-Circular Corrugated Tab
- Simulation of Use-Related Multi-Parameter Load Spectrum Based on Principal Component Analysis
- Characterization of Tandem Airfoil Configurations of Axial Compressors
- Research on Suppressing Vibration of Mistuning Cyclic-Periodic Structure
- Research on Power Regulation Schedule Control System for Turboprop Engine
- Enhancement of Full Coverage Film Cooling Effectiveness with Mixed Injection Holes
- CFD Analysis and Experimental Validation of the Flow Field in a Rib Roughed Turbine Internal Cooling Channel
- Perforated Wall in Controlling the Separation Bubble Due to Shock Wave –Boundary Layer Interaction
- Calculating Endogenous and Exogenous Exergy Destruction for an Experimental Turbojet Engine
- One-equation turbulence models applied to practical scramjet inlet