Dynamic modeling and projection-based reduction methods for bladed disks with nonlinear frictional and intermittent contact interfaces
M Mitra, BI Epureanu - Applied Mechanics Reviews, 2019 - asmedigitalcollection.asme.org
Turbine bladed disks or blisks, which constitute critical components of most modern
turbomachinery, are known for their complex vibratory behavior. The nonlinear dynamics …
turbomachinery, are known for their complex vibratory behavior. The nonlinear dynamics …
On the relevance of a microslip contact model for under-platform dampers
C Gastaldi, MM Gola - International Journal of Mechanical Sciences, 2016 - Elsevier
A crucial part of building reliable models for the design of under-platform dampers for turbine
blades resides in the appropriate description of the contact conditions, both in the normal …
blades resides in the appropriate description of the contact conditions, both in the normal …
Contact model identification for friction ring dampers in blisks with reduced order modeling
S Baek, B Epureanu - International Journal of Non-Linear Mechanics, 2020 - Elsevier
Friction dampers are commonly used to attenuate blade vibration to acceptable levels in
turbomachinery. Friction interfaces significantly affect structure responses by inducing …
turbomachinery. Friction interfaces significantly affect structure responses by inducing …
Effects of contact mistuning on shrouded blisk dynamics
Mistuning commonly refers to non-cyclically symmetric variations in such an otherwise
cyclically-symmetric structure. Mistuning in a blisk due to variations in blade materials and …
cyclically-symmetric structure. Mistuning in a blisk due to variations in blade materials and …
Mistuning and damping experiments at design speed combined with computational tools
K D'Souza, M Dunn… - … Expo: Power for …, 2017 - asmedigitalcollection.asme.org
This paper describes a combined experimental/analytical effort which will provide
measurements specifically designed to verify computational tools developed for …
measurements specifically designed to verify computational tools developed for …
A conditioning technique for projection-based reduced order models
A Lupini, BI Epureanu - Computer Methods in Applied Mechanics and …, 2019 - Elsevier
A conditioning technique for projection-based reduced order models (ROMs) in structural
dynamics is presented together with examples of applications. Conditioning can be …
dynamics is presented together with examples of applications. Conditioning can be …
Nonlinear dynamics analysis of mistuned turbine bladed disks with damped shrouds
W Zhao, D Zhang, L Sun, Y Xie - ASME power …, 2017 - asmedigitalcollection.asme.org
This paper deals with the real dynamics characteristics of a mistuned steam turbine bladed
disk subjected to dry friction forces to better understand the nonlinear mistuning …
disk subjected to dry friction forces to better understand the nonlinear mistuning …