Modeling Complex Dynamic Interactions of Nonlinear, Aeroelastic, Multistage, and Localization Phenomena in Turbine Engines
Abstract
Goals: To model and predict the nonlinear vibration response of a rotor with a cracked blade; account for multistage and aeroelastic coupling; (2) to provide a fundamental physical understanding of localization in rotors due to combined effects of cracks and mistuning; (3) To identify localization and nonlinear vibration characteristics associated with cracks so they can be used for detection and prognosis; (4) to develop a new aerolastic model capable of efficiently and accurately predicting aerodynamic loads on multistage mistuned bladed disks with nonlinear structural behavior. Impact: Provide cutting edge, new capabilities for accurately predicting the dynamics of a large class of cracked, aeroelastic systems and enabled fracture propagation and fatigue life predictions; (2) directly support established and emerging practices in damage assessment of aerospace vehicles to enable critical maintenance and repair decisions, thus increasing asset readiness; (3) provide fundamental physical insight for the development of advanced design and monitoring technology for systems with FSI.
Document Details
- Document Type
- Technical Report
- Publication Date
- Feb 25, 2011
- Accession Number
- ADA548684
Entities
People
- Bogdan I Epureanu
- Matthew P. Castanier
Organizations
- University of Michigan