Topics: Design methodology , Optimization , Stress , Design , Dimensions , Disks , Disperse systems , Electromagnetic scattering , High pressure (Physics) , Radiation scattering

Reduction of the Design Space to Optimize Blade Fir-Tree Attachments

F. Alinejad, D. Botto, M. Gola, A. Bessone

GT 2018; V07AT30A003doi:https://doi.org/10.1115/GT2018-75781

Abstract

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Topics: Blades , Design , Optimization , Stress , Disks , Engines , Finite element analysis , Genetic algorithms , Optimization algorithms , Pareto optimization

The Use of Additive Technologies to Create Lightweight Parts for Gas Turbine Engine Compressors

Liubov Magerramova, Michail Volkov, Maria Svinareva, Alex Siversky

GT 2018; V07AT30A004doi:https://doi.org/10.1115/GT2018-75904

Abstract

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Topics: Compressors , Gas turbines , Manufacturing , Stiffness , Stress , Weight (Mass) , Aircraft , Aircraft engines , Aviation , Blades

Evaluation Method of Uncertainty of Reliability Calculation for Turbine Disk Life

Jiang Fan, Gaoxiang Chen, Xiuli Shen, Tianyi Fan

GT 2018; V07AT30A005doi:https://doi.org/10.1115/GT2018-76111

Abstract

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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

Boris Vasilyev, Anton Salnikov, Artem Semenov, Liubov Magerramova

GT 2018; V07AT30A006doi:https://doi.org/10.1115/GT2018-76306

Abstract

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Topics: Design , Disks , Turbines , Stress , Blades , Finite element model , Manufacturing technology , Optimization , Rotation

Twin-Web Turbine Discs: Part 2 — Fabrication and Processing

Boris Vasilyev, Liubov Magerramova, Anton Salnikov, Nikolay Tsykunov, Vladimir Isakov, Artem Semenov

GT 2018; V07AT30A007doi:https://doi.org/10.1115/GT2018-76310

Abstract

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Topics: Disks , Manufacturing , Turbines , Additive manufacturing , Cavities , Computerized tomography , Eddies (Fluid dynamics) , Eddy currents (Electricity) , Heat , Hot pressing

Towards Structural Topology Optimization of Rotor Blisks

Enrico Boccini, Enrico Meli, Andrea Rindi, Lorenzo Pinelli, Lorenzo Peruzzi, Andrea Arnone

GT 2018; V07AT30A008doi:https://doi.org/10.1115/GT2018-76482

Abstract

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Topics: Optimization , Rotors , Topology , Stators , Blades , Design , Geometry , Stress , Turbomachinery , Additive manufacturing

Towards the Structural Optimization of Bladed Components Featuring Contact Interfaces

Julien Lainé, Elsa Piollet, Alain Batailly

GT 2018; V07AT30A009doi:https://doi.org/10.1115/GT2018-76552

Abstract

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Topics: Structural optimization , Blades , Clearances (Engineering) , Design , Aircraft engines , Disks , Dynamics (Mechanics) , Engines , Free vibrations , Optimization

Investigation of Stress-Strain Behavior of a Component Under Variable Frequency Non-Proportional Loading

Yifeng Hu, Gang Chen, Weizhe Wang

GT 2018; V07AT30A010doi:https://doi.org/10.1115/GT2018-76768

Abstract

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Topics: Stress , Torsion , Cycles , Tension , Cylinders , Hardening

Rapid Visualization of Compressor Blade Finite Element Models Using Surrogate Modeling

Spencer Bunnell, Christopher Thelin, Steven Gorrell, John Salmon, Christopher Ruoti, Ammon Hepworth

GT 2018; V07AT30A011doi:https://doi.org/10.1115/GT2018-77188

Abstract

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Topics: Blades , Compressors , Finite element model , Modeling , Visualization , Design , Stress , Errors , Finite element analysis , Structural design

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

Kunio Asai, Shuichi Ishizawa, Nobuhiro Isobe

GT 2018; V07AT31A001doi:https://doi.org/10.1115/GT2018-75282

Abstract

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Topics: Coating processes , Coatings , Fatigue , Turbine blades , Wear , Fracture (Materials) , Fatigue strength , Friction , Microcracks , Crack propagation

Some Recent Advances in Engineering Fracture Modeling for Turbomachinery

R. Craig McClung, Yi-Der Lee, James C. Sobotka, Jonathan P. Moody, Vikram Bhamidipati, Michael P. Enright, D. Benjamin Guseman, Colin B. Thomas

GT 2018; V07AT31A002doi:https://doi.org/10.1115/GT2018-75400

Abstract

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Topics: Fracture (Materials) , Modeling , Turbomachinery , Stress , Corners (Structural elements) , Displacement , Fatigue cracks , Finite element model , Weight (Mass)

Structural Integrity Assessment of ORC Turbine Tie-Rods: An Analysis Based on Elastic Shakedown and Fracture Mechanics

S. Rabbolini, M. Sanvito, A. Lo Conte, S. Beretta, D. Rizzi

GT 2018; V07AT31A003doi:https://doi.org/10.1115/GT2018-75716

Abstract

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Topics: Fracture mechanics , Organic Rankine cycle , Tie rods , Turbines , Stress , Fracture (Materials) , Cycles , Fatigue , Thread , Crack propagation

Some Aspects of Operated Blades HCF Analysis: Rejuvenation and Life Estimation

Sergey A. Ivanov, Maxim G. Guralnik, Alexander I. Rybnikov

GT 2018; V07AT31A004doi:https://doi.org/10.1115/GT2018-75731

Abstract

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Topics: Blades , High cycle fatigue , Turbine blades , Shot peening , Turbines , Alloys , Coatings , Endurance limit , Failure , Heat treating (Metalworking)

Failure Assessment of Test Coupons: Comparison Between Model Predictions and Test Results

Sushovan Roychowdhury, Tomas Månsson, Thomas Hansson

GT 2018; V07AT31A005doi:https://doi.org/10.1115/GT2018-75734

Abstract

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Topics: Failure , Stress , Surface cracks , Alloys , Aviation , Engines , Finite element analysis , Geometry , Nickel , Temperature

Characterizing the Influence of Cyclic Re-Priming on the Prediction of Long Term Creep Damage for Gas Turbine Components

Richard Green, Jonathan Douglas, Andrew Moffat, Richard Bellows

GT 2018; V07AT31A006doi:https://doi.org/10.1115/GT2018-75813

Abstract

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Topics: Creep , Damage , Gas turbines , Cycles , Stress , Engines , Alloys , Chemistry , Crystals , Fatigue

A Mean Stress Correction to a Ductility Exhaustion Approach for Gas Turbine Component Life Assessment

Richard Green, Jonathan Douglas, Andrew Moffat, Christopher Meyer

GT 2018; V07AT31A007doi:https://doi.org/10.1115/GT2018-75838

Abstract

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Topics: Ductility , Gas turbines , Stress , Damage , Creep , Engines , Fatigue , Cycles , Downtime , High temperature

Improved Low Cycle Fatigue Analysis for Ni-Based Turbine Nozzles

Gianluca Maggiani, Matthew J. Roy, Simone Colantoni, Philip J. Withers

GT 2018; V07AT31A008doi:https://doi.org/10.1115/GT2018-75974

Abstract

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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

Lei Li, Huan Wan, Wenjing Gao, Fujuan Tong, Shouyi Sun

GT 2018; V07AT31A009doi:https://doi.org/10.1115/GT2018-76285

Abstract

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Topics: Alloys , Cooling , Creep , Crystals , Nickel , Stress , Temperature , Aircraft engines , Blades , Cavitation

Durability Assessment of Additive Manufactured Compressor Disk Considering Material Defects Distribution

Jier Wang, Dianyin Hu, Long Zhang, Xi Liu, Rongqiao Wang

GT 2018; V07AT31A010doi:https://doi.org/10.1115/GT2018-76465

Abstract

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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

Marcus Thiele, Uwe Gampe, Kathrin A. Fischer

GT 2018; V07AT31A011doi:https://doi.org/10.1115/GT2018-76519

Abstract

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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

M. Sistaninia, T. Winge, D. Ugel

GT 2018; V07AT31A012doi:https://doi.org/10.1115/GT2018-76549

Abstract

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Topics: Gas turbines , Modeling , Rotors , Temperature , Creep , Elongation , Fatigue life , Metals , Fatigue , Inspection

Blade Fissure Determination by Means of Blade Tip-Timing System

Victor Mileshin, Victor Fateev, Alexander Stepanov

GT 2018; V07AT31A013doi:https://doi.org/10.1115/GT2018-76848

Abstract

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Topics: Blades , Rotors , Failure , Machinery , Aircraft engines , Compressors , Turbochargers , Vibration , Damage , Emergencies

A Reduced Order Constitutive Modeling Approach for a Material Subjected to Combined Cycle Fatigue

Ali P. Gordon, Thomas Bouchenot

GT 2018; V07AT31A014doi:https://doi.org/10.1115/GT2018-76903

Abstract

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Topics: Combined cycles , Fatigue , Modeling , High temperature , Alloys , Approximation , Combustion , Constitutive equations , Creep , Design

Extending the Life of F-Class Gas Turbine Rotors

Scott Keller, David Day

GT 2018; V07AT31A015doi:https://doi.org/10.1115/GT2018-76925

Abstract

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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; V07AT31A016doi:https://doi.org/10.1115/GT2018-76968

Abstract

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Topics: Fracture (Materials) , Gas turbines , High cycle fatigue , Crack propagation , Rotors , Low cycle fatigue , Compressors , Engines , Fatigue , Gravity (Force)

Measurement of Hysteresis Energy Using Digital Image Correlation With Application to Energy Based Fatigue Life Prediction

Dino Celli, M.-H. Herman Shen, Casey Holycross, Onome Scott-Emuakpor, Tommy George

GT 2018; V07AT31A017doi:https://doi.org/10.1115/GT2018-76973

Abstract

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Topics: Fatigue life , Fatigue , Energy dissipation , High cycle fatigue , Aluminum , Damage , Damage assessment , Experimental characterization , Fatigue damage , Gas turbines

Temperature Dependence of Crack Growth Under LCF for Different Alloys

S. Rabbolini, S. Foletti, S. Beretta

GT 2018; V07AT31A018doi:https://doi.org/10.1115/GT2018-77059

Abstract

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Topics: Alloys , Fracture (Materials) , Temperature effects , High temperature , Crack propagation , Cycles , Fatigue cracks , Low cycle fatigue , Stress , Superalloys

The Influence of Thermal Transient Rates on Coated Turbine Parts Life Expectancy

Alexander Staroselsky, Thomas J. Martin, Luke Borkowski

GT 2018; V07AT31A019doi:https://doi.org/10.1115/GT2018-77283

Abstract

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Topics: Transients (Dynamics) , Turbine components , Turbines , Airfoils , Coating processes , Coatings , Deformation , Engines , Heating and cooling , Modeling

Probabilistic Methods

On the Transferability of Probabilistic Fracture Mechanics Results for Scaled 50Hz and 60Hz Heavy Duty Gas Turbine Rotor Disks

Christian Amann, Kai Kadau, Peter Gumbsch

GT 2018; V07AT32A001doi:https://doi.org/10.1115/GT2018-75561

Abstract

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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

Alwin Förster, Lars Panning-von Scheidt, Jörg Wallaschek

GT 2018; V07AT32A002doi:https://doi.org/10.1115/GT2018-75755

Abstract

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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

Hanno Gottschalk, Mohamed Saadi, Onur Tanil Doganay, Kathrin Klamroth, Sebastian Schmitz

GT 2018; V07AT32A003doi:https://doi.org/10.1115/GT2018-75759

Abstract

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Topics: Failure , Probability , Shapes , Turbomachinery , Finite element analysis , Computation , Optimization , Boundary-value problems , Fluids , Geometry

Probabilistic Design of Radial Pins Constraint System in a Gas Turbine Annular Combustion Chamber

Federico Funghi, Paolo di Sisto

GT 2018; V07AT32A004doi:https://doi.org/10.1115/GT2018-75763

Abstract

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Topics: Combustion chambers , Constraint systems , Design , Gas turbines , Pins (Engineering) , Domes (Structural elements) , Stiffness , Stress , Computer simulation , Deformation

Using Statistical Calibration for Model Verification and Validation, Diagnosis of Model Inadequacy, and Improving Simulation Accuracy

Kevin OFlaherty, Zachary Graves, Lie Xiong, Mark Andrews

GT 2018; V07AT32A005doi:https://doi.org/10.1115/GT2018-75807

Abstract

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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

Armin Hadadian, Sairam Prabhakar, Bjorn Sjodin, Keith Taylor

GT 2018; V07AT32A006doi:https://doi.org/10.1115/GT2018-75854

Abstract

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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

Xi Liu, Dianyin Hu, Bin Zhang, Rongqiao Wang

GT 2018; V07AT32A007doi:https://doi.org/10.1115/GT2018-75927

Abstract

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Topics: Crystals , Turbine blades , Uncertainty quantification , Damage , Constitutive equations , Design , Errors , Finite element methods , Nickel , Reliability

Treating Uncertainties to Generate a Robust Design of Gas Turbine Disk Using L Moments and Scarce Samples Including Outliers

Deepan Jayaraman, Palaniappan Ramu, Suhas Karkada Suresh, Vinay Ramanath

GT 2018; V07AT32A008doi:https://doi.org/10.1115/GT2018-76431

Abstract

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Topics: Design , Disks , Gas turbines , Uncertainty , Experimental design , Errors , Turbines

Reliability Analysis on a Turbine Disk Considering the Coupling of Multiple Failure Modes

Dianyin Hu, Ying Shi, Xi Liu, Rongqiao Wang

GT 2018; V07AT32A009doi:https://doi.org/10.1115/GT2018-76477

Abstract

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Topics: Disks , Event history analysis , Failure mechanisms , Turbines , Failure , Creep , Design methodology , Engines , Fatigue , Geometry

Surrogate Modeling of Manufacturing Variation Effects on Unsteady Interactions in a Transonic Turbine

Jeffrey M. Brown, Joseph Beck, Alexander Kaszynski, John Clark

GT 2018; V07AT32A010doi:https://doi.org/10.1115/GT2018-76609

Abstract

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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

Joseph A. Beck, Jeffrey M. Brown, Alex A. Kaszynski, Emily B. Carper

GT 2018; V07AT32A011doi:https://doi.org/10.1115/GT2018-76800

Abstract

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Topics: Disks , Manufacturing , Eigenvalues , Dynamic light scattering , Geometry , Blades , Optical scanners , Principal component analysis

A Gaussian Process Modeling Approach for Fast Robust Design With Uncertain Inputs

Kevin M. Ryan, Jesper Kristensen, You Ling, Sayan Ghosh, Isaac Asher, Liping Wang

GT 2018; V07AT32A012doi:https://doi.org/10.1115/GT2018-77007

Abstract

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Topics: Design , Modeling , Optimization , Uncertainty , Aircraft , Control equipment , Engineering design , Flight , Manufacturing , Optimization algorithms

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; V07AT32A013doi:https://doi.org/10.1115/GT2018-77058

Abstract

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Topics: Additive manufacturing , Fracture (Materials) , Gas turbines , Nondestructive evaluation , Risk assessment , Simulation , Inspection , Computer software , Damage , Failure

Rotordynamics

Unconventional Techniques for the Analysis of Experimental Spiral Vibrations

Andrea Vania, Paolo Pennacchi, Steven Chatterton, Filippo Cangioli

GT 2018; V07AT33A001doi:https://doi.org/10.1115/GT2018-75005

Abstract

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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

Filippo Cangioli, Paolo Pennacchi, Andrea Vania, Steven Chatterton

GT 2018; V07AT33A002doi:https://doi.org/10.1115/GT2018-75042

Abstract

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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

Aaron M. Rimpel

GT 2018; V07AT33A003doi:https://doi.org/10.1115/GT2018-75101

Abstract

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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

Sergey Semenov, Mikhail Nikhamkin, Nikolai Sazhenkov

GT 2018; V07AT33A004doi:https://doi.org/10.1115/GT2018-75144

Abstract

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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; V07AT33A005doi:https://doi.org/10.1115/GT2018-75145

Abstract

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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

Xi Chen, Mingfu Liao

GT 2018; V07AT33A006doi:https://doi.org/10.1115/GT2018-75215

Abstract

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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

Xi Chen, Mingfu Liao

GT 2018; V07AT33A007doi:https://doi.org/10.1115/GT2018-75227

Abstract

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Topics: Bearings , Rotors , Transients (Dynamics) , Rotation , Design , Equations of motion , Resonance , Rotational inertia , Shear deformation , Stiffness

Coupled Analysis of the Rotor-Dynamic Fluid Forces in the Annular Plain Seal and the Shaft Vibration

K. Miyake, A. Ikemoto, M. Uchiumi, T. Inoue

GT 2018; V07AT33A008doi:https://doi.org/10.1115/GT2018-75271

Abstract

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Topics: Fluids , Rotors , Vibration , Flow (Dynamics) , Machinery , Pressure , Anisotropy , Poisson equation , Stability , 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

Dara Childs, Andrew Crandall

GT 2018; V07AT33A009doi:https://doi.org/10.1115/GT2018-75326

Abstract

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Topics: Compressors , Gears , Rotors , Vibration , Stiffness , Bearings , Compressor impellers , Damping , Disks , Excitation

A Sobol' Sequence Parametric Analysis of Rotor Thermal Bow in Gas Turbines

Evan O. Smith, Jouke H. S. de Baar, Andrew J. Neely

GT 2018; V07AT33A010doi:https://doi.org/10.1115/GT2018-75347

Abstract

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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

Ningbo Yuan, Jinju Sun, Peng Song, Changjiang Huo, Shan Sun

GT 2018; V07AT33A011doi:https://doi.org/10.1115/GT2018-75443

Abstract

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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

Cécile Dumartineix, Benjamin Chouvion, Fabrice Thouverez, Marie-Océane Parent

GT 2018; V07AT33A012doi:https://doi.org/10.1115/GT2018-75461

Abstract

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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

Ali Tatar, Christoph W. Schwingshackl

GT 2018; V07AT33A013doi:https://doi.org/10.1115/GT2018-75479

Abstract

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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; V07AT33A014doi:https://doi.org/10.1115/GT2018-75607

Abstract

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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

Jiaguangyi Xiao, Yong Chen, Hua Ouyang, Anjenq Wang

GT 2018; V07AT33A015doi:https://doi.org/10.1115/GT2018-75639

Abstract

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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

Ghaith Ghanim Al-Ghazal, Philip Bonello, Sergio G. Torres Cedillo

GT 2018; V07AT33A016doi:https://doi.org/10.1115/GT2018-75777

Abstract

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Topics: Artificial neural networks , Bearings , Dampers , Aircraft engines , Rotors , Vibration , Displacement , Excitation , Instrumentation , Inverse problems

Investigation on the Modal Characteristics of the Rubbing Rotor System With Additional Constraint

Jie Hong, Pingchao Yu, Dayi Zhang, Yanhong Ma, Jixing Liu

GT 2018; V07AT33A017doi:https://doi.org/10.1115/GT2018-75933

Abstract

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Topics: Rotors , Whirls , Damping , Stiffness , Collisions (Physics) , Friction , Stress

A Simplified and Efficient Analysis of Morton Effect

Lili Gu

GT 2018; V07AT33A018doi:https://doi.org/10.1115/GT2018-75948

Abstract

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Topics: Bearings , Die cutting , Dynamic models , Fluid films , Fluids , Heating , Machinery , Modeling , Rotors , Shearing (Deformation)

Evaluation of Friction Models for Rotor-Rubbing Predictions

Juan C. Jauregui, Jorge A. Saenz, Claudia A. Gonzalez

GT 2018; V07AT33A019doi:https://doi.org/10.1115/GT2018-76017

Abstract

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Topics: Friction , Rotors , Damage , Fourier series , Modeling , Stiffness , Turbomachinery , Wavelet transforms

Safety Design Methods for Rotor-Bearing System and Dynamic Analysis in Aero-Engines

Jie Hong, Tianrang Li, Zhichao Liang, Dayi Zhang, Yanhong Ma, Yongfeng Wang

GT 2018; V07AT33A020doi:https://doi.org/10.1115/GT2018-76065

Abstract

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Topics: Aircraft engines , Bearings , Design methodology , Dynamic analysis , Rotors , Safety , Stiffness , Vibration , Design , Transients (Dynamics)

Extensive Experimental Study on the Stability of Rotor System With Spline Coupling

Zezeng Dai, Jianping Jing, Changmin Chen, Jiqing Cong

GT 2018; V07AT33A021doi:https://doi.org/10.1115/GT2018-76262

Abstract

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Topics: Rotors , Splines , Stability , Damping , Errors , Lubrication , Vibration , Stress , Torque , Couplings

Dynamic Model Development and Analysis of Multiple Rotors Coupled With Thrust Collars

Kyungdae Kang

GT 2018; V07AT33A022doi:https://doi.org/10.1115/GT2018-76392

Abstract

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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

Flavio Quattrone, Benjamin Dugone

GT 2018; V07AT33A023doi:https://doi.org/10.1115/GT2018-76481

Abstract

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Topics: Bearings , Computer simulation , Damping , Dynamic analysis , Dynamics (Mechanics) , Equations of motion , Gas turbines , Machinery , Modeling , Rotors