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Proceedings Papers
Volume 7A: Structures and Dynamics
Emerging Methods in Design and Engineering
Evaluation Method of Uncertainty of Reliability Calculation for Turbine Disk Life
GT 2018; V07AT30A005https://doi.org/10.1115/GT2018-76111
Topics:
Disks
,
Evaluation methods
,
Reliability
,
Turbines
,
Uncertainty
,
Engines
,
Errors
,
Low cycle fatigue
,
Probability
,
Safety
Twin-Web Turbine Discs: Part 1 — Design and Analysis of Their Efficiency
GT 2018; V07AT30A006https://doi.org/10.1115/GT2018-76306
Topics:
Design
,
Disks
,
Turbines
,
Stress
,
Blades
,
Finite element model
,
Manufacturing technology
,
Optimization
,
Rotation
Towards Structural Topology Optimization of Rotor Blisks
GT 2018; V07AT30A008https://doi.org/10.1115/GT2018-76482
Topics:
Optimization
,
Rotors
,
Topology
,
Stators
,
Blades
,
Design
,
Geometry
,
Stress
,
Turbomachinery
,
Additive manufacturing
Towards the Structural Optimization of Bladed Components Featuring Contact Interfaces
GT 2018; V07AT30A009https://doi.org/10.1115/GT2018-76552
Topics:
Structural optimization
,
Blades
,
Clearances (Engineering)
,
Design
,
Aircraft engines
,
Disks
,
Dynamics (Mechanics)
,
Engines
,
Free vibrations
,
Optimization
Fatigue, Fracture, and Life Prediction
Fretting Fatigue and Wear of Ti-6Al-4V With HVOF Sprayed Stellite Coating on Contact Surfaces of Shrouds and Stubs of Turbine Blades
GT 2018; V07AT31A001https://doi.org/10.1115/GT2018-75282
Topics:
Coating processes
,
Coatings
,
Fatigue
,
Turbine blades
,
Wear
,
Fracture (Materials)
,
Fatigue strength
,
Friction
,
Microcracks
,
Crack propagation
Structural Integrity Assessment of ORC Turbine Tie-Rods: An Analysis Based on Elastic Shakedown and Fracture Mechanics
GT 2018; V07AT31A003https://doi.org/10.1115/GT2018-75716
Topics:
Fracture mechanics
,
Organic Rankine cycle
,
Tie rods
,
Turbines
,
Stress
,
Fracture (Materials)
,
Cycles
,
Fatigue
,
Thread
,
Crack propagation
Failure Assessment of Test Coupons: Comparison Between Model Predictions and Test Results
GT 2018; V07AT31A005https://doi.org/10.1115/GT2018-75734
Topics:
Failure
,
Stress
,
Surface cracks
,
Alloys
,
Aviation
,
Engines
,
Finite element analysis
,
Geometry
,
Nickel
,
Temperature
A Mean Stress Correction to a Ductility Exhaustion Approach for Gas Turbine Component Life Assessment
GT 2018; V07AT31A007https://doi.org/10.1115/GT2018-75838
Topics:
Ductility
,
Gas turbines
,
Stress
,
Damage
,
Creep
,
Engines
,
Fatigue
,
Cycles
,
Downtime
,
High temperature
Improved Low Cycle Fatigue Analysis for Ni-Based Turbine Nozzles
GT 2018; V07AT31A008https://doi.org/10.1115/GT2018-75974
Topics:
Low cycle fatigue
,
Nozzles
,
Turbines
,
Alloys
,
Cooling
,
Firing
,
Temperature
,
Thermomechanics
,
Accounting
,
Computation
Investigation on Creep Characteristic of Nickel-Base Single Crystal Alloy Double Wall Cooling Specimen
GT 2018; V07AT31A009https://doi.org/10.1115/GT2018-76285
Topics:
Alloys
,
Cooling
,
Creep
,
Crystals
,
Nickel
,
Stress
,
Temperature
,
Aircraft engines
,
Blades
,
Cavitation
Durability Assessment of Additive Manufactured Compressor Disk Considering Material Defects Distribution
GT 2018; V07AT31A010https://doi.org/10.1115/GT2018-76465
Topics:
Additive manufacturing
,
Compressors
,
Disks
,
Durability
,
Fatigue cracks
,
Fatigue life
,
Fatigue limit
,
Titanium
,
Aircraft engines
,
Alloys
Novel Test Facility for Investigation of the Impact of Thermally Induced Stress Gradients on Fatigue Life of Cooled Gas Turbine Components
GT 2018; V07AT31A011https://doi.org/10.1115/GT2018-76519
Topics:
Fatigue life
,
Gas turbines
,
Stress
,
Test facilities
,
Low cycle fatigue
,
Temperature
,
Flux (Metallurgy)
,
Heat
,
Service life (Equipment)
,
Temperature gradient
Incremental Modeling of Rotor Lifetime Consumption During Gas Turbine Operation
GT 2018; V07AT31A012https://doi.org/10.1115/GT2018-76549
Topics:
Gas turbines
,
Modeling
,
Rotors
,
Temperature
,
Creep
,
Elongation
,
Fatigue life
,
Metals
,
Fatigue
,
Inspection
Blade Fissure Determination by Means of Blade Tip-Timing System
GT 2018; V07AT31A013https://doi.org/10.1115/GT2018-76848
Topics:
Blades
,
Rotors
,
Failure
,
Machinery
,
Aircraft engines
,
Compressors
,
Turbochargers
,
Vibration
,
Damage
,
Emergencies
Extending the Life of F-Class Gas Turbine Rotors
GT 2018; V07AT31A015https://doi.org/10.1115/GT2018-76925
Topics:
Gas turbines
,
Rotors
,
Inspection
,
Compressors
,
Maintenance
,
Turbines
,
Failure mechanisms
,
Forging
,
Fracture (Materials)
,
Modeling
LCF Initiated - HCF Propagated Crack Life Estimation of Gas Turbine Bolts
Amit K. Paspulati, Krishna Veluru, Kashinath Akki, Rohit Khattar, Sudeep Bosu, Santosh Narasimhachary
GT 2018; V07AT31A016https://doi.org/10.1115/GT2018-76968
Topics:
Fracture (Materials)
,
Gas turbines
,
High cycle fatigue
,
Crack propagation
,
Rotors
,
Low cycle fatigue
,
Compressors
,
Engines
,
Fatigue
,
Gravity (Force)
Probabilistic Methods
On the Transferability of Probabilistic Fracture Mechanics Results for Scaled 50Hz and 60Hz Heavy Duty Gas Turbine Rotor Disks
GT 2018; V07AT32A001https://doi.org/10.1115/GT2018-75561
Topics:
Disks
,
Fracture mechanics
,
Gas turbines
,
Rotors
,
Design
,
Engines
,
Centrifugal force
,
Dimensions
,
Failure
,
Product development
Approximate Solution of the Fokker-Planck Equation for a Multi-Degree of Freedom Frictionally Damped Bladed Disk Under Random Excitation
GT 2018; V07AT32A002https://doi.org/10.1115/GT2018-75755
Topics:
Disks
,
Fokker-Planck equation
,
Random excitation
,
Excitation
,
Density
,
Finite element methods
,
Air flow
,
Blades
,
Computation
,
Degrees of freedom
Adjoint Method to Calculate the Shape Gradients of Failure Probabilities for Turbomachinery Components
GT 2018; V07AT32A003https://doi.org/10.1115/GT2018-75759
Topics:
Failure
,
Probability
,
Shapes
,
Turbomachinery
,
Finite element analysis
,
Computation
,
Optimization
,
Boundary-value problems
,
Fluids
,
Geometry
Using Statistical Calibration for Model Verification and Validation, Diagnosis of Model Inadequacy, and Improving Simulation Accuracy
GT 2018; V07AT32A005https://doi.org/10.1115/GT2018-75807
Topics:
Calibration
,
Simulation
,
Design
,
Errors
,
Fatigue
,
Manufacturing
,
Materials properties
,
Model validation
,
Optimization
,
Random noise
Application of Surrogate Models and Probabilistic Design Methodology to Assess Creep Growth Limit of an Uncooled Turbine Blade
GT 2018; V07AT32A006https://doi.org/10.1115/GT2018-75854
Topics:
Creep
,
Design methodology
,
Turbine blades
,
Engines
,
Model development
,
Errors
,
Failure
,
Finite element analysis
,
Gas turbines
,
Machine learning
Probabilistic TMF Life Evaluation of a Single Crystal Turbine Blade Concerning Uncertainty Quantification
GT 2018; V07AT32A007https://doi.org/10.1115/GT2018-75927
Topics:
Crystals
,
Turbine blades
,
Uncertainty quantification
,
Damage
,
Constitutive equations
,
Design
,
Errors
,
Finite element methods
,
Nickel
,
Reliability
Surrogate Modeling of Manufacturing Variation Effects on Unsteady Interactions in a Transonic Turbine
GT 2018; V07AT32A010https://doi.org/10.1115/GT2018-76609
Topics:
Manufacturing
,
Modeling
,
Turbines
,
Computational fluid dynamics
,
Blades
,
Airfoils
,
Geometry
,
Algorithms
,
Design
,
Flow (Dynamics)
Active Subspace Development of Integrally Bladed Disk Dynamic Properties due to Manufacturing Variations
GT 2018; V07AT32A011https://doi.org/10.1115/GT2018-76800
Topics:
Disks
,
Manufacturing
,
Eigenvalues
,
Dynamic light scattering
,
Geometry
,
Blades
,
Optical scanners
,
Principal component analysis
Influences of Non-Destructive Inspection Simulation on Fracture Risk Assessment of Additively Manufactured Turbine Engine Components
Michael P. Enright, R. Craig McClung, James C. Sobotka, Jonathan P. Moody, John McFarland, Yi-Der Lee, Irving Gray, Joe Gray
GT 2018; V07AT32A013https://doi.org/10.1115/GT2018-77058
Rotordynamics
Unconventional Techniques for the Analysis of Experimental Spiral Vibrations
GT 2018; V07AT33A001https://doi.org/10.1115/GT2018-75005
Topics:
Vibration
,
Friction
,
Rotors
,
Damage
,
Machinery
,
Modeling
,
Stability
,
Stators
,
Steam turbines
,
Uncertainty
Numerical Modeling of Thermally-Induced Vibration in Rotor Caused by Light-Rub Against Brush Seal
GT 2018; V07AT33A002https://doi.org/10.1115/GT2018-75042
Topics:
Computer simulation
,
Rotors
,
Vibration
,
Clearances (Engineering)
,
Leakage
,
Turbomachinery
,
Design
,
Friction
,
Machinery
,
Dynamics (Mechanics)
A Simple Contact Model for Simulating Tie Bolt Rotor Butt Joints With and Without Pilot Fits
GT 2018; V07AT33A003https://doi.org/10.1115/GT2018-75101
Topics:
Rotors
,
Tie rods
,
Stiffness
,
Finite element analysis
,
Simulation
,
Design
,
Dimensions
,
Elastic moduli
,
Pressure
,
Risk
Rotor System Mathematical Model Substructure-Based Reduction and Updating Using Experimental Modal Analysis
GT 2018; V07AT33A004https://doi.org/10.1115/GT2018-75144
Topics:
Modal analysis
,
Rotors
,
Rotordynamics
,
Bearings
,
Blades
,
Couplings
,
Design
,
Disks
,
Fans
,
Gas turbines
Effectiveness Testing of an Inverse Method for Balancing Nonlinear Rotordynamic Systems
Sergio G. Torres Cedillo, Philip Bonello, Ghaith Ghanim Al-Ghazal, Jacinto Cortés Pérez, Alberto Reyes Solis
GT 2018; V07AT33A005https://doi.org/10.1115/GT2018-75145
Topics:
Aircraft engines
,
Bearings
,
Dampers
,
Inverse problems
,
Noise (Sound)
,
Rotors
,
Sensors
,
Springs
,
Testing
,
Vibration
Steady-State Characteristics of a Dual-Rotor System With Intershaft Bearing Subjected to Mass Unbalance and Base Motions
GT 2018; V07AT33A006https://doi.org/10.1115/GT2018-75215
Topics:
Bearings
,
Rotors
,
Steady state
,
Rotation
,
Accuracy and precision
,
Equations of motion
,
Excitation
,
Frequency response
,
Inertia (Mechanics)
,
Mode shapes
Transient Characteristics of a Dual-Rotor System With Intershaft Bearing Subjected to Mass Unbalance and Base Motions During Start-Up
GT 2018; V07AT33A007https://doi.org/10.1115/GT2018-75227
Topics:
Bearings
,
Rotors
,
Transients (Dynamics)
,
Rotation
,
Design
,
Equations of motion
,
Resonance
,
Rotational inertia
,
Shear deformation
,
Stiffness
A Simple (1-Flexible Rotor) Model That Shows Bull Gear Runout As a Source of Subsynchronous, Lateral, Vibration in Integrally Geared Compressor (IGC) Pinions
GT 2018; V07AT33A009https://doi.org/10.1115/GT2018-75326
Topics:
Compressors
,
Gears
,
Rotors
,
Vibration
,
Stiffness
,
Bearings
,
Compressor impellers
,
Damping
,
Disks
,
Excitation
A Sobol' Sequence Parametric Analysis of Rotor Thermal Bow in Gas Turbines
GT 2018; V07AT33A010https://doi.org/10.1115/GT2018-75347
Topics:
Gas turbines
,
Rotors
,
Compressors
,
Engines
,
Stiffness
,
Temperature gradient
,
Wall thickness
,
Annulus
,
Cavities
,
Clearances (Engineering)
Investigation of Flow-Induced Radial Force and its Influence on Rotor Dynamics for a Cryogenic Liquid Turbine Expander
GT 2018; V07AT33A011https://doi.org/10.1115/GT2018-75443
Topics:
Flow (Dynamics)
,
Rotordynamics
,
Turbines
,
Design
,
Rotors
,
Impellers
,
Diffusers
,
Ducts
,
Finite element methods
,
FORTRAN
An Efficient Approach for the Frequency Analysis of Non-Axisymmetric Rotating Structures: Application to a Coupled Bladed Bi-Rotor System
GT 2018; V07AT33A012https://doi.org/10.1115/GT2018-75461
Topics:
Rotors
,
Blades
,
Disks
,
Equations of motion
,
Finite element model
,
Bearings
,
Design
,
Engines
,
Resolution (Optics)
,
Simulation
Effect of a Planetary Gearbox on the Dynamics of a Rotor System
GT 2018; V07AT33A013https://doi.org/10.1115/GT2018-75479
Topics:
Dynamics (Mechanics)
,
Mechanical drives
,
Rotors
,
Stiffness
,
Gears
,
Damping
,
Deflection
,
Disks
,
Mode shapes
,
Bearings
Study on Subsynchronous Vibration With Tilting Pad Journal Bearing Under Starved Lubrication
Rimpei Kawashita, Tadasuke Nishioka, Shimpei Yokoyama, Makoto Iwasaki, Shuichi Isayama, Yuichiro Waki
GT 2018; V07AT33A014https://doi.org/10.1115/GT2018-75607
Topics:
Journal bearings
,
Lubrication
,
Vibration
,
Bearings
,
Rotors
,
Damping
,
Flow (Dynamics)
,
Clearances (Engineering)
,
Excitation
,
Machinery
Investigation of Fan Blades Vibration due to Blade/Casing Rubbing Interactions Using In-Plane Two-Dimensional Model
GT 2018; V07AT33A015https://doi.org/10.1115/GT2018-75639
Topics:
Blades
,
Vibration
,
Disks
,
Engines
,
Damage
,
Damping
,
Rotor vibration
,
Structural design
,
Traveling waves
,
Turbofans
Improved Empirical Identification of the Inverse Model of a Squeeze-Film Damper Bearing Based on a Recurrent Neural Network
GT 2018; V07AT33A016https://doi.org/10.1115/GT2018-75777
Topics:
Artificial neural networks
,
Bearings
,
Dampers
,
Aircraft engines
,
Rotors
,
Vibration
,
Displacement
,
Excitation
,
Instrumentation
,
Inverse problems
A Simplified and Efficient Analysis of Morton Effect
GT 2018; V07AT33A018https://doi.org/10.1115/GT2018-75948
Topics:
Bearings
,
Die cutting
,
Dynamic models
,
Fluid films
,
Fluids
,
Heating
,
Machinery
,
Modeling
,
Rotors
,
Shearing (Deformation)
Evaluation of Friction Models for Rotor-Rubbing Predictions
GT 2018; V07AT33A019https://doi.org/10.1115/GT2018-76017
Topics:
Friction
,
Rotors
,
Damage
,
Fourier series
,
Modeling
,
Stiffness
,
Turbomachinery
,
Wavelet transforms
Dynamic Model Development and Analysis of Multiple Rotors Coupled With Thrust Collars
GT 2018; V07AT33A022https://doi.org/10.1115/GT2018-76392
Topics:
Dynamic models
,
Rotors
,
Thrust
,
Vibration
,
Finite element model
,
Compressors
,
Design
,
Frequency response
,
Gear teeth
,
Gears
A Modal Based Approach for the Lateral Dynamic Analysis of Rotating Shafts Supported by Elastic Substructures
GT 2018; V07AT33A023https://doi.org/10.1115/GT2018-76481
Topics:
Bearings
,
Computer simulation
,
Damping
,
Dynamic analysis
,
Dynamics (Mechanics)
,
Equations of motion
,
Gas turbines
,
Machinery
,
Modeling
,
Rotors
Rotordynamics Experimental Validation of a Sliding-Blade Architecture for an Inside-Out Ceramic Turbine
GT 2018; V07AT33A024https://doi.org/10.1115/GT2018-76698
Topics:
Blades
,
Ceramics
,
Rotordynamics
,
Turbines
,
Springs
,
Rotors
,
Displacement
,
Engineering prototypes
,
Carbon
,
Composite materials
Application of Simplified Parametric Model to Estimate Fan Blade-Out Response
GT 2018; V07AT33A027https://doi.org/10.1115/GT2018-77108
Topics:
Blades
,
Engines
,
Strips
,
Whirls
,
Machining
,
Pressure
,
Degrees of freedom
,
Dynamic response
,
Friction
,
Momentum
An Investigation on the Static Performance of the Non-Circular Journal Bearing Using Fourier Analysis
GT 2018; V07AT33A028https://doi.org/10.1115/GT2018-77210
Topics:
Fourier analysis
,
Journal bearings
,
Bearings
,
Rotors
,
Design
,
Film thickness
,
Fourier series
,
Pressure
,
Stress
,
Bearing design