NDLI: Thermo-Mechanical Rotor Analysis Tuned by Engine Operational Data

Content Provider	The American Society of Mechanical Engineers (ASME) Digital Collection
Author	Bruzzone, Silvia Mantero, Marco Patrone, Stefano Benedetto, M. Santolini Silingardi, Andrea Traversone, Laura
Copyright Year	2015
Abstract	Gas turbine engines must withstand severe thermo-mechanical conditions during present-day load operation, characterized by cyclic transients and long dwell times. Indeed engine components are subject to thermal transient conditions, thermo-mechanical strain and stress fields; those are not easily measurable during operation, making calculations hardly confirmable. All these operational factors can lead a turbine component life reduction, finally increasing lifetime costs. The developed approach has been based on several calculations, such as thermal and FEM stress evaluation on the rotor components, tuned or validated by different field measurements carried out by thermocouples in the rotor core and the pre-tightening load variation of tie-rod. Transient disks and tie-rod temperatures (calculated by an in-house Secondary Air System code) have been tuned on experimental data. Thus, for rotor thermo-mechanical analysis more reliable boundary conditions have been provided. Rotor FEM analysis has been finally checked comparing the variation of the tie-bolt tension (calculated by FEM analysis) with the experimental behaviour observed during different operating conditions.
Sponsorship	International Gas Turbine Institute
File Format	PDF
ISBN	9780791856734
DOI	10.1115/GT2015-42655
Volume Number	Volume 5C: Heat Transfer
Conference Proceedings	ASME Turbo Expo 2015: Turbine Technical Conference and Exposition
Language	English
Publisher Date	2015-06-15
Publisher Place	Montreal, Quebec, Canada
Access Restriction	Subscribed
Subject Keyword	Temperature Rotors Thermocouples Finite element methods Engines Stress Thermomechanics Transients (dynamics) Finite element model Gas turbines Boundary-value problems Disks Tension Tie rods Turbine components
Content Type	Text
Resource Type	Article

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