Vibration analysis of rotating pre-twisted curved blades under thermal environment

Vibration characteristics of rotating pre-twisted curved blades, made of INCONEL 718 and operating in thermal environment, are numerically investigated in this paper. Commercially available software ANSYS is used to perform combined steady state thermal and pre-stressed modal analysis. Analysis is p...

Full description

Saved in:
Bibliographic Details
Published in:International journal of dynamics and control 2023-06, Vol.11 (3), p.919-927
Main Authors: Chandran, P. Akshay, Kumar, C. P. Sudheesh
Format: Article
Language:English
Subjects:
Blades
Boundary conditions
Complexity
Control
Control and Systems Theory
Dynamical Systems
Engineering
Free boundaries
Free vibration
Material properties
Modal analysis
Nickel base alloys
Pitch (inclination)
Resonant frequencies
Rotation
Steady state
Superalloys
Thermal environments
Vibration
Vibration analysis
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Vibration characteristics of rotating pre-twisted curved blades, made of INCONEL 718 and operating in thermal environment, are numerically investigated in this paper. Commercially available software ANSYS is used to perform combined steady state thermal and pre-stressed modal analysis. Analysis is performed for different blade taper ratios, pitch angles and rotating speed conditions. Both straight and curved blades, modelled as plates with clamped-free-free-free boundary conditions, and subjected to steady state thermal and pre-stressed conditions are numerically analysed to determine their natural frequencies. Free vibration characteristics of straight and curved blades, having the same volume and material properties, are estimated to see the effect of changing the geometry from flat blades to curved ones. The effect of change in the temperature at different rotating speeds is also investigated.
ISSN:2195-268X
2195-2698
DOI:10.1007/s40435-022-01059-4