Abstract
Fuzzy and probability-box (p-box) variables exit widely in aerospace engineering. To evaluate the reliability of turbine discs under the mixture of these two types of variables and guarantee safety, the critical point lies in how to deal with the fuzzy variables. In this paper, a novel method based on equivalent transformation of entropy and saddlepoint approximation (SPA) is proposed to estimate the reliability of turbine discs with the mixture of fuzzy and p-box variables. The advantage of the proposed method is that it can transform fuzzy variables whose memberships are non-normal into normal random variables through entropy invariability; meanwhile, using the SPA, the required sample size and corresponding computational cost decreases greatly. An example is used to illustrate the proposed method and a comparison is also made with the interval Monte Carlo simulation (IMCS). The results indicate that the proposed method is promising and has higher efficiency with almost the same accuracy.
Acknowledgements
This research was supported by the National Natural Science Foundation of China under contract number 51775090, the Fundamental Research Funds for the Central Universities under contract numbers ZYGX2014Z010 and SKLMT-KFKT-201601.
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© 2018 Walter de Gruyter GmbH, Berlin/Boston
Artikel in diesem Heft
- Frontmatter
- Editorial
- Study on Global Aerodynamic Shape Optimization of Transonic Compressor Blade
- Original Research Articles
- The Migration of Corner Separation Flow in Multi-Channel Compressor Cascades at High Attack Angle
- Water Film Formation and Performance Effect on Compressor Stage in Water Injection Process
- A Novel Reliability Analysis Method for Turbine Discs with the Mixture of Fuzzy and Probability-Box Variables
- Numerical Study of Unsteady Pulsed Suction through Endwall Bleed Holes in a Highly Loaded Compressor Cascade
- A Study on Torsional Vibration Suppression Method for an Integrated Helicopter / Engine System
- Numerical Simulation of Supersonic Jet Control by Tabs with Slanted Perforation
- Effect of Gurney Flaps on the Aerodynamic Characteristics of NACA 0010 Cascades
- A Study on Nonlinear Model Predictive Control for Helicopter/Engine with Variable Rotor Speed Based on Linear Kalman Filter
- Performance Characteristic Modeling for 2D Compressor Cascades
- Numerical Investigation on Metrological Fidelity of a Shielded Thermocouple Probe and the Effects of Geometrical Parameters
- Experimental Study of Kerosene Ignition and Flame Stabilization in a Supersonic Combustor
- Metaheuristics Optimized Machine Learning Modelling of Environmental Exergo-Emissions for an Aero-Engine
- Nonlinear Model Predictive Control Strategy for Limit Management of Aero-Engines
- Numerical Investigation on the Cold Flow Field of a Typical Cavity-based Scramjet Combustor with Double Ramp Entry
Artikel in diesem Heft
- Frontmatter
- Editorial
- Study on Global Aerodynamic Shape Optimization of Transonic Compressor Blade
- Original Research Articles
- The Migration of Corner Separation Flow in Multi-Channel Compressor Cascades at High Attack Angle
- Water Film Formation and Performance Effect on Compressor Stage in Water Injection Process
- A Novel Reliability Analysis Method for Turbine Discs with the Mixture of Fuzzy and Probability-Box Variables
- Numerical Study of Unsteady Pulsed Suction through Endwall Bleed Holes in a Highly Loaded Compressor Cascade
- A Study on Torsional Vibration Suppression Method for an Integrated Helicopter / Engine System
- Numerical Simulation of Supersonic Jet Control by Tabs with Slanted Perforation
- Effect of Gurney Flaps on the Aerodynamic Characteristics of NACA 0010 Cascades
- A Study on Nonlinear Model Predictive Control for Helicopter/Engine with Variable Rotor Speed Based on Linear Kalman Filter
- Performance Characteristic Modeling for 2D Compressor Cascades
- Numerical Investigation on Metrological Fidelity of a Shielded Thermocouple Probe and the Effects of Geometrical Parameters
- Experimental Study of Kerosene Ignition and Flame Stabilization in a Supersonic Combustor
- Metaheuristics Optimized Machine Learning Modelling of Environmental Exergo-Emissions for an Aero-Engine
- Nonlinear Model Predictive Control Strategy for Limit Management of Aero-Engines
- Numerical Investigation on the Cold Flow Field of a Typical Cavity-based Scramjet Combustor with Double Ramp Entry