Uncertainty analysis of flexible rotors considering fuzzy parameters and fuzzy-random parameters
AUTOR(ES)
Lara-Molina, Fabian Andres, Koroishi, Edson Hideki, Steffen Jr, Valder
FONTE
Lat. Am. j. solids struct.
DATA DE PUBLICAÇÃO
2015-10
RESUMO
Abstract The components of flexible rotors are subjected to uncertainties. The main sources of uncertainties include the variation of mechanical properties. This contribution aims at analyzing the dynamics of flexible rotors under uncertain parameters modeled as fuzzy and fuzzy random variables. The uncertainty analysis encompasses the modeling of uncertain parameters and the numerical simulation of the corresponding flexible rotor model by using an approach based on fuzzy dynamic analysis. The numerical simulation is accomplished by mapping the fuzzy parameters of the deterministic flexible rotor model. Thereby, the flexible rotor is modeled by using both the Fuzzy Finite Element Method and the Fuzzy Stochastic Finite Element Method. Numerical simulations illustrate the methodology conveyed in terms of orbits and frequency response functions subject to uncertain parameters.
Documentos Relacionados
- Stochastic modeling of flexible rotors
- Uncertainty analysis of a flexible rotor supported by fluid film bearings
- Modeling of dynamic rotors with flexible bearings due to the use of viscoelastic materials
- Balanceamento de rotores flexíveis sem usar massas de teste
- On-line control of a flexible beam using adaptive fuzzy controller and piezoelectric actuators