Blade dynamic stress analysis of rotating bladed disks
Date issued
2007
Authors
Journal Title
Journal ISSN
Volume Title
Publisher
University of West Bohemia
Abstract
The paper deals with mathematical modelling of steady forced bladed disk vibrations and with dynamic stress
calculation of the blades. The blades are considered as 1D kontinuum elastic coupled with three-dimensional elastic
disk centrally clamped into rotor rotating with constant angular speed. The steady forced vibrations are generated
by the aerodynamic forces acting along the blade length. By using modal synthesis method the mathematical model
of the rotating bladed disk is condensed to calculate steady vibrations. Dynamic stress analysis of the blades is
based on calculation of the time dependent reduced stress in blade cross-sections by using Hubert-Misses-Hencky
stress hypothesis. The presented method is applied to real turbomachinery rotor with blades connected on the top
with shroud.
Description
Subject(s)
rotační disk, analýza napětí, kmitání
Citation
Applied and Computational Mechanics. 2007, vol. 1, no. 1, p. 77-86.