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Proceedings Papers

Fracture Mechanics Analysis of a Last Stage Steam Turbine Blade Failure

J. S. Rao
Proc. ASME. DETC95, Volume 3B: 15th Biennial Conference on Mechanical Vibration and Noise — Acoustics, Vibrations, and Rotating Machines, 1173-1180, September 17–20, 1995
Paper No: DETC1995-0513
DOI: https://doi.org/10.1115/DETC1995-0513
View Paper titled, Fracture Mechanics Analysis of a Last Stage Steam Turbine Blade Failure
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Topics: Blades, Failure, Fracture mechanics, Steam turbines, Fracture (Materials), Accidents, Fatigue, Nuclear power stations, Stress
Proceedings Papers

Coupled Bending-Torsion Vibration of Geared Rotors

J. S. Rao, J. R. Chang, T. N. Shiau
Proc. ASME. DETC95, Volume 3B: 15th Biennial Conference on Mechanical Vibration and Noise — Acoustics, Vibrations, and Rotating Machines, 977-989, September 17–20, 1995
Paper No: DETC1995-0492
DOI: https://doi.org/10.1115/DETC1995-0492
View Paper titled, Coupled Bending-Torsion Vibration of Geared Rotors
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Topics: Rotors, Torsion, Vibration, Gears, Bearings, Pressure, Finite element model, Mode shapes, Stiffness
Proceedings Papers

Computer Aided Analysis of Non-Linear Vibrating Systems

J. S. Rao, Tarun Puri
Proc. ASME. IDETC-CIE2001, Volume 6C: 18th Biennial Conference on Mechanical Vibration and Noise, 2855-2859, September 9–12, 2001
Paper No: DETC2001/VIB-21638
DOI: https://doi.org/10.1115/DETC2001/VIB-21638
View Paper titled, Computer Aided Analysis of Non-Linear Vibrating Systems
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Topics: Computer software, Computer-aided engineering, Computers, Degrees of freedom, Differential equations, Dynamics (Mechanics), Nonlinear systems, Nonlinear vibration, Vibration
Proceedings Papers

Investigation of the Performance of a Three Stage Combined Power Cycle for Electric Power Plants

Pereddy Nageswara Reddy, J. S. Rao
Proc. ASME. POWER2019, ASME 2019 Power Conference, V001T02A001, July 15–18, 2019
Paper No: POWER2019-1834
DOI: https://doi.org/10.1115/POWER2019-1834
View Paper titled, Investigation of the Performance of a Three Stage Combined Power Cycle for Electric Power Plants
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Topics: Brayton cycle, Electricity (Physics), Heat recovery, Organic Rankine cycle, Rankine cycle, Thermodynamic power cycles
Proceedings Papers

Coupled Bending-Torsion Vibrations of Rotating Blades

S. Banerjee, J. S. Rao
Proc. ASME. GT1976, Volume 1A: General, V01AT01A043, March 21–25, 1976
Paper No: 76-GT-43
DOI: https://doi.org/10.1115/76-GT-43
View Paper titled, Coupled Bending-Torsion Vibrations of Rotating Blades
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Topics: Rotating blades, Torsion, Vibration, Blades, Disks, Rotation, Airfoils, Cantilevers, Crystals, Differential equations
Proceedings Papers

Optimum Cycle Parameters of Coal Fired Closed Cycle Gas Turbine in Regenerative and Combined Cycle Configurations

J. S. Rao
Proc. ASME. GT1982, Volume 3: Coal, Biomass and Alternative Fuels; Combustion and Fuels; Oil and Gas Applications; Cycle Innovations, V003T08A014, April 18–22, 1982
Paper No: 82-GT-290
DOI: https://doi.org/10.1115/82-GT-290
View Paper titled, Optimum Cycle Parameters of Coal Fired Closed Cycle Gas Turbine in Regenerative and Combined Cycle Configurations
Click here to open pdf in another window PDF for Optimum Cycle Parameters of Coal Fired Closed Cycle Gas Turbine in Regenerative and Combined Cycle Configurations
Topics: Closed-cycle gas turbines, Coal, Combined cycles, Cycles, Compressors, Gases, Helium, Pressure, Carbon dioxide, Performance evaluation
Proceedings Papers

Transient Stress Response of a Turbine Blade Under Non-Linear Damping Effects

J. S. Rao, N. S. Vyas
Proc. ASME. GT1990, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; General, V005T14A017, June 11–14, 1990
Paper No: 90-GT-269
DOI: https://doi.org/10.1115/90-GT-269
View Paper titled, Transient Stress Response of a Turbine Blade Under Non-Linear Damping Effects
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Topics: Damping, Stress, Transients (Dynamics), Turbine blades, Rotors, Resonance, Turbomachinery
Proceedings Papers

Resonant Stress Determination of a Turbine Blade With Modal Damping as a Function of Rotor Speed and Vibrational Amplitude

J. S. Rao, N. S. Vyas
Proc. ASME. GT1989, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General, V005T13A001, June 4–8, 1989
Paper No: 89-GT-27
DOI: https://doi.org/10.1115/89-GT-27
View Paper titled, Resonant Stress Determination of a Turbine Blade With Modal Damping as a Function of Rotor Speed and Vibrational Amplitude
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Topics: Damping, Resonance, Rotors, Stress, Turbine blades, Turbomachinery
Proceedings Papers

Fatigue Life Estimation Procedure for a Turbine Blade Under Transient Loads

N. S. Vyas, J. S. Rao
Proc. ASME. GT1992, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V005T14A007, June 1–4, 1992
Paper No: 92-GT-078
DOI: https://doi.org/10.1115/92-GT-078
View Paper titled, Fatigue Life Estimation Procedure for a Turbine Blade Under Transient Loads
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Topics: Fatigue life, Stress, Transients (Dynamics), Turbine blades, Blades, Fatigue, Fatigue damage, Resonance, Rotors, Damping
Proceedings Papers

A Fracture Mechanics Approach to Life Prediction of Turbine Blades

N. S. Vyas, Sidharth, J. S. Rao
Proc. ASME. GT1993, Volume 3C: General, V03CT17A067, May 24–27, 1993
Paper No: 93-GT-406
DOI: https://doi.org/10.1115/93-GT-406
View Paper titled, A Fracture Mechanics Approach to Life Prediction of Turbine Blades
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Topics: Fracture mechanics, Turbine blades, Blades, Stress, Fracture (Materials), Algorithms, Fatigue life, Approximation, Clearances (Engineering), Crack propagation
Proceedings Papers

Steady State Response and Stability of Rotating Composite Blades With Frictional Damping

T. N. Shiau, J. S. Rao, Y. D. Yu, S. T. Choi
Proc. ASME. GT1996, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General, V005T14A054, June 10–13, 1996
Paper No: 96-GT-469
DOI: https://doi.org/10.1115/96-GT-469
View Paper titled, Steady State Response and Stability of Rotating Composite Blades With Frictional Damping
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Topics: Blades, Composite materials, Damping, Stability, Steady state, Friction, Excitation, Dampers, Plates (structures), Rotating blades
Proceedings Papers

Vibration Analysis of Rotating Cambered Helicoidal Turbomachine Blades

J. S. Rao, C. V. Ramakrishnan, K. Gupta, K. K. Rao
Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T14A052, June 2–5, 1997
Paper No: 97-GT-299
DOI: https://doi.org/10.1115/97-GT-299
View Paper titled, Vibration Analysis of Rotating Cambered Helicoidal Turbomachine Blades
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Topics: Blades, Turbomachinery, Vibration analysis, Shells, Displacement, Finite element analysis, Stress
Proceedings Papers

Dynamic Behavior of Geared Rotors

T. N. Shiau, J. S. Rao, J. R. Chang, Siu-Tong Choi
Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T14A034, June 2–5, 1997
Paper No: 97-GT-187
DOI: https://doi.org/10.1115/97-GT-187
View Paper titled, Dynamic Behavior of Geared Rotors
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Topics: Rotors, Dampers, Excitation, Vibration, Chaos, Gravity (Force), Torsion, Whirls
Proceedings Papers

A Mixed Shell Element for Cambered Helicoidal Blades and Dynamic Stresses due to Aerodynamic Excitation

J. S. Rao, C. V. Ramakrishnan, K. Gupta, K. K. Rao
Proc. ASME. GT1998, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V005T14A026, June 2–5, 1998
Paper No: 98-GT-356
DOI: https://doi.org/10.1115/98-GT-356
View Paper titled, A Mixed Shell Element for Cambered Helicoidal Blades and Dynamic Stresses due to Aerodynamic Excitation
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Topics: Blades, Excitation, Shells, Stress, Pressure, Airfoils, Displacement, Rotating blades, Suction, Vibration analysis
Proceedings Papers

Blade Life — A Comparison by Cumulative Damage Theories

J. S. Rao, A. Pathak, A. Chawla
Proc. ASME. GT1999, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, V004T03A031, June 7–10, 1999
Paper No: 99-GT-287
DOI: https://doi.org/10.1115/99-GT-287
View Paper titled, Blade Life — A Comparison by Cumulative Damage Theories
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Topics: Blades, Damage, Stress, Excitation, Flow (Dynamics), Modal analysis, Resonance, Steam, Turbine blades
Proceedings Papers

Elasto Plastic Stress Analysis of LP Steam Turbine Blades Under Centrifugal Loading

J. S. Rao, C. V. Ramakrishnan, K. Gupta, A. K. Singh
Proc. ASME. GT2000, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V004T03A076, May 8–11, 2000
Paper No: 2000-GT-0569
DOI: https://doi.org/10.1115/2000-GT-0569
View Paper titled, Elasto Plastic Stress Analysis of LP Steam Turbine Blades Under Centrifugal Loading
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Topics: Blades, Steam turbines, Stress analysis (Engineering), Pressure, Stress, Tensile strength, Disks, Finite element analysis, Finite element model, Machine components
Proceedings Papers

Gearbox Failure of a Turbogenerator Set

J. S. Rao, K. Ch. Peraiah
Proc. ASME. GT2001, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T03A003, June 4–7, 2001
Paper No: 2001-GT-0235
DOI: https://doi.org/10.1115/2001-GT-0235
View Paper titled, Gearbox Failure of a Turbogenerator Set
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Topics: Failure, Mechanical drives, Turbogenerators, Circuits, Accidents, Couplings, Degrees of freedom, Fatigue life, Gears, Magnification
Proceedings Papers

Experimental Investigation of Misaligned Rotors

J. S. Rao, R. Sreenivas, A. Chawla
Proc. ASME. GT2001, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T03A019, June 4–7, 2001
Paper No: 2001-GT-0253
DOI: https://doi.org/10.1115/2001-GT-0253
View Paper titled, Experimental Investigation of Misaligned Rotors
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Topics: Rotors
Proceedings Papers

Significance of Damping and its Simulation in Fatigue Damage

J. S. Rao
Proc. ASME. IMECE2013, Volume 4A: Dynamics, Vibration and Control, V04AT04A055, November 15–21, 2013
Paper No: IMECE2013-66193
DOI: https://doi.org/10.1115/IMECE2013-66193
View Paper titled, Significance of Damping and its Simulation in Fatigue Damage
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Topics: Damping, Fatigue damage, Simulation, Blades, Stress, Aircraft engines, Steam turbines, Design, Fatigue failure, Resonance
Proceedings Papers

Life Calculation of First Stage Compressor Blade of a Trainer Aircraft

J. S. Rao, Narayan Rangarajan, Rejin Ratnakar, R. Rzadkowski, M. Soliński, I. Vorobiev
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 77-84, June 11–15, 2012
Paper No: GT2012-68070
DOI: https://doi.org/10.1115/GT2012-68070
View Paper titled, Life Calculation of First Stage Compressor Blade of a Trainer Aircraft
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Topics: Aircraft, Blades, Compressors, Damping, Air Force, Computational fluid dynamics, Damage, Engines, Flow (Dynamics), Pressure