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Proceedings Papers

Modeling of Friction Induced Vibration due to Third-Body Effects

David S. Xu, Hooshang Heshmat
Proc. ASME. IMECE2001, Vibration and Control of Mechanical Systems, 23-30, November 11–16, 2001
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2001/DE-23203
https://doi.org/10.1115/IMECE2001/DE-23203
View Paper titled, Modeling of Friction Induced Vibration due to Third-Body Effects
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Topics: Friction, Modeling, Vibration, Damping, High cycle fatigue, Coating processes, Coatings, Failure, Shear (Mechanics), Stiffness
Proceedings Papers

The Integration of Structural and Fluid Film Dynamic Elements in Foil Bearings: Part II — A New Approach to the Problem

Erik E. Swanson, Hooshang Heshmat
Proc. ASME. DETC99, Volume 7A: 17th Biennial Conference on Mechanical Vibration and Noise, 1201-1208, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8270
https://doi.org/10.1115/DETC99/VIB-8270
View Paper titled, The Integration of Structural and Fluid Film Dynamic Elements in Foil Bearings: Part II — A New Approach to the Problem
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Topics: Fluid films, Foil bearings, Bearings, Construction, Damping, Dynamic models, Dynamic systems, Dynamics (Mechanics), Elasticity, Modeling
Proceedings Papers

The Integration of Structural and Fluid Film Dynamic Elements in Foil Bearings: Part I — Past Approaches to the Problem

Hooshang Heshmat
Proc. ASME. DETC99, Volume 7A: 17th Biennial Conference on Mechanical Vibration and Noise, 1209-1220, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8271
https://doi.org/10.1115/DETC99/VIB-8271
View Paper titled, The Integration of Structural and Fluid Film Dynamic Elements in Foil Bearings: Part I — Past Approaches to the Problem
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Topics: Fluid films, Foil bearings, Damping, Stiffness, Bearings, Construction, Coulombs, Dynamic models, Elasticity, Friction
Proceedings Papers

On the Integration of Hot Foil Bearings Into Gas Turbine Engines: Theoretical Treatment

Hooshang Heshmat, James F. Walton, II
Proc. ASME. GT2019, Volume 7B: Structures and Dynamics, V07BT34A036, June 17–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: GT2019-91710
https://doi.org/10.1115/GT2019-91710
View Paper titled, On the Integration of Hot Foil Bearings Into Gas Turbine Engines: Theoretical Treatment
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Topics: Foil bearings, Gas turbines, Bearings, Stiffness, Design, High temperature, Modeling, Rotors, System dynamics, Damping
Proceedings Papers

Ultra-High Temperature Compliant Foil Bearings: The Journey to 870°C and Application in Gas Turbine Engines — Experiment

Hooshang Heshmat, James F. Walton, II, Brian D. Nicholson
Proc. ASME. GT2018, Volume 7B: Structures and Dynamics, V07BT34A016, June 11–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: GT2018-75555
https://doi.org/10.1115/GT2018-75555
View Paper titled, Ultra-High Temperature Compliant Foil Bearings: The Journey to 870°C and Application in Gas Turbine Engines — Experiment
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Topics: Foil bearings, Gas turbines, Temperature, Bearings, Ceramics, High temperature, Testing, Turbochargers, Air Force, Automotive engines
Proceedings Papers

A Bladeless Turbocompressor Concept: Shear Driven Gas Compression With Deformable Structures: Part 2 — Operating Principles and Theory

Hooshang Heshmat, José Luis Córdova
Proc. ASME. POWER2017-ICOPE-17, Volume 1: Boilers and Heat Recovery Steam Generator; Combustion Turbines; Energy Water Sustainability; Fuels, Combustion and Material Handling; Heat Exchangers, Condensers, Cooling Systems, and Balance-of-Plant, V001T02A006, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: POWER-ICOPE2017-3375
https://doi.org/10.1115/POWER-ICOPE2017-3375
View Paper titled, A Bladeless Turbocompressor Concept: Shear Driven Gas Compression With Deformable Structures: Part 2 — Operating Principles and Theory
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Topics: Compression, Shear (Mechanics), Pressure, Disks, Flow (Dynamics), Shear flow, Compressors, Engines, Fluid films, Foil bearings
Proceedings Papers

A Bladeless Turbocompressor Concept: Shear Driven Gas Compression With Deformable Structures: Part 1 — Experimental Proof of Concept

Hooshang Heshmat, James F. Walton, II
Proc. ASME. POWER2017-ICOPE-17, Volume 1: Boilers and Heat Recovery Steam Generator; Combustion Turbines; Energy Water Sustainability; Fuels, Combustion and Material Handling; Heat Exchangers, Condensers, Cooling Systems, and Balance-of-Plant, V001T02A005, June 26–30, 2017
Publisher: American Society of Mechanical Engineers
Paper No: POWER-ICOPE2017-3374
https://doi.org/10.1115/POWER-ICOPE2017-3374
View Paper titled, A Bladeless Turbocompressor Concept: Shear Driven Gas Compression With Deformable Structures: Part 1 — Experimental Proof of Concept
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Topics: Compression, Shear (Mechanics), Pressure, Foil bearings, Shear flow, Combined heat and power, Compressors, Disks, Flow (Dynamics), Geometry
Proceedings Papers

Development of a Ceramic Heat Exchanger for Application as Solid Oxide Fuel Cell Cathode Air Preheater

José Luis Córdova, Hooshang Heshmat
Proc. ASME. POWER2016, ASME 2016 Power Conference, V001T04A006, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: POWER2016-59333
https://doi.org/10.1115/POWER2016-59333
View Paper titled, Development of a Ceramic Heat Exchanger for Application as Solid Oxide Fuel Cell Cathode Air Preheater
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Topics: Ceramics, Heat exchangers, Solid oxide fuel cells, Heat, Alloys, Design, Heat transfer, Metals, Pressure, Pressure drop
Proceedings Papers

Design of a Partial Admission Turbine for an Organic Rankine Cycle With Environmental Fluctuation Consideration

Hooshang Heshmat, Andrew Hunsberger, James F. Walton, II
Proc. ASME. POWER2016, ASME 2016 Power Conference, V001T08A012, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: POWER2016-59386
https://doi.org/10.1115/POWER2016-59386
View Paper titled, Design of a Partial Admission Turbine for an Organic Rankine Cycle With Environmental Fluctuation Consideration
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Topics: Design, Organic Rankine cycle, Turbines, Rotors, Bearings, Contamination, Dynamics (Mechanics), Engineering prototypes, Fluids, Foil bearings
Proceedings Papers

Lubricant Free Foil Bearings Pave Way to Highly Efficient and Reliable Flywheel Energy Storage System

Hooshang Heshmat, James F. Walton, II
Proc. ASME. ES2016, Volume 1: Biofuels, Hydrogen, Syngas, and Alternate Fuels; CHP and Hybrid Power and Energy Systems; Concentrating Solar Power; Energy Storage; Environmental, Economic, and Policy Considerations of Advanced Energy Systems; Geothermal, Ocean, and Emerging Energy Technologies; Photovoltaics; Posters; Solar Chemistry; Sustainable Building Energy Systems; Sustainable Infrastructure and Transportation; Thermodynamic Analysis of Energy Systems; Wind Energy Systems and Technologies, V001T05A006, June 26–30, 2016
Publisher: American Society of Mechanical Engineers
Paper No: ES2016-59350
https://doi.org/10.1115/ES2016-59350
View Paper titled, Lubricant Free Foil Bearings Pave Way to Highly Efficient and Reliable Flywheel Energy Storage System
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Topics: Energy storage, Flywheels, Foil bearings, Lubricants, Bearings, Rotors, Design, Levitation, Magnetic bearings, Mean free path
eBook Chapter

Ultra High-Speed Micro-Milling of Aluminum Alloy

Series: ASME Press Select Proceedings
Publisher: ASME Press
Published: 2016
ISBN: 9780791861080
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Topics: Aluminum alloys, Micromilling
Journal Articles

Starved Hydrodynamic Gas Foil Bearings—Experiment, Micromechanical Phenomenon, and Hypotheses

Hooshang Heshmat, James F. Walton, II
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research-Article
J. Tribol. October 2016, 138(4): 041703.
Paper No: TRIB-15-1235
https://doi.org/10.1115/1.4032911
Published Online: July 20, 2016
View Article titled, Starved Hydrodynamic Gas Foil Bearings—Experiment, Micromechanical Phenomenon, and Hypotheses
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Topics: Bearings, Foil bearings, Particulate matter, Pressure, Viscosity, Stress, Lubrication, Fluids
Proceedings Papers

Ultra High-Speed Micro-Milling of Aluminum Alloy

Said Jahanmir, Michael J. Tomaszewski, Hooshang Heshmat
Proc. ASME. IMECE2015, Volume 15: Advances in Multidisciplinary Engineering, V015T19A011, November 13–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2015-50053
https://doi.org/10.1115/IMECE2015-50053
View Paper titled, Ultra High-Speed Micro-Milling of Aluminum Alloy
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Topics: Aluminum alloys, Micromilling, Cutting, Micromachining, Milling, Biomedicine, Drilling, Fuels, Grinding, Inspection
Proceedings Papers

High Effectiveness, Low Pressure Drop Recuperator for High Speed and Power Oil-Free Turbogenerator

José Luis Córdova, James F. Walton, II, Hooshang Heshmat
Proc. ASME. GT2015, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T23A025, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43718
https://doi.org/10.1115/GT2015-43718
View Paper titled, High Effectiveness, Low Pressure Drop Recuperator for High Speed and Power Oil-Free Turbogenerator
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Topics: Additive manufacturing, Bearings, Ceramics, Combustion chambers, Compressors, Cycles, Engineering prototypes, Engines, Flow (Dynamics), Gas turbines
Proceedings Papers

Debris Tolerant Compliant Foil Bearings for High-Speed Turbomachines

Andrew Hunsberger, James F. Walton, II, Hooshang Heshmat
Proc. ASME. GT2015, Volume 8: Microturbines, Turbochargers and Small Turbomachines; Steam Turbines, V008T23A024, June 15–19, 2015
Publisher: American Society of Mechanical Engineers
Paper No: GT2015-43712
https://doi.org/10.1115/GT2015-43712
View Paper titled, Debris Tolerant Compliant Foil Bearings for High-Speed Turbomachines
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Topics: Foil bearings, Turbomachinery, Testing, Bearings, Dust, Temperature, Failure, Cantilevers, Coating processes, Coatings
Proceedings Papers

The Basics of Powder Lubrication in High-Temperature Powder-Lubricated Dampers

Hooshang Heshmat, James F. Walton
Proc. ASME. GT1991, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award; General, V005T14A040, June 3–6, 1991
Publisher: American Society of Mechanical Engineers
Paper No: 91-GT-248
https://doi.org/10.1115/91-GT-248
View Paper titled, The Basics of Powder Lubrication in High-Temperature Powder-Lubricated Dampers
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Topics: Dampers, High temperature, Lubrication, Design, Aircraft, Bearings, Flow (Dynamics), Fluid film lubrication, Gas turbines, Industrial lubrication systems
Proceedings Papers

Effects of Frequency on Structural Stiffness and Damping in a Self-Acting Compliant Foil Journal Bearing

C.-P. Roger Ku, Hooshang Heshmat
Proc. ASME. GT1994, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; General, V005T14A015, June 13–16, 1994
Publisher: American Society of Mechanical Engineers
Paper No: 94-GT-100
https://doi.org/10.1115/94-GT-100
View Paper titled, Effects of Frequency on Structural Stiffness and Damping in a Self-Acting Compliant Foil Journal Bearing
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Topics: Damping, Journal bearings, Stiffness, Excitation, Mechanical properties, Strips, Test facilities
Proceedings Papers

Zero Clearance Auxiliary Bearings for Magnetic Bearing Systems

H. Ming Chen, James Walton, Hooshang Heshmat
Proc. ASME. GT1997, Volume 4: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education; IGTI Scholar Award, V004T14A028, June 2–5, 1997
Publisher: American Society of Mechanical Engineers
Paper No: 97-GT-112
https://doi.org/10.1115/97-GT-112
View Paper titled, Zero Clearance Auxiliary Bearings for Magnetic Bearing Systems
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Topics: Bearings, Clearances (Engineering), Magnetic bearings, Failure, Shock (Mechanics), Transients (Dynamics), Rollers, Rotors, Engineering prototypes, Analytical design
Proceedings Papers

On the Performance of Hybrid Foil-Magnetic Bearings

Hooshang Heshmat, H. Ming Chen, James F. Walton, II
Proc. ASME. GT1998, Volume 5: Manufacturing Materials and Metallurgy; Ceramics; Structures and Dynamics; Controls, Diagnostics and Instrumentation; Education, V005T14A027, June 2–5, 1998
Publisher: American Society of Mechanical Engineers
Paper No: 98-GT-376
https://doi.org/10.1115/98-GT-376
View Paper titled, On the Performance of Hybrid Foil-Magnetic Bearings
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Topics: Bearings, Foil bearings, Magnetic bearings, Journal bearings, Design, Load bearing capacity, Compliance, Control algorithms, Control systems, Elasticity
Proceedings Papers

Application of Foil Bearings to Turbomachinery Including Vertical Operation

James F. Walton, II, Hooshang Heshmat
Proc. ASME. GT1999, Volume 1: Aircraft Engine; Marine; Turbomachinery; Microturbines and Small Turbomachinery, V001T04A004, June 7–10, 1999
Publisher: American Society of Mechanical Engineers
Paper No: 99-GT-391
https://doi.org/10.1115/99-GT-391
View Paper titled, Application of Foil Bearings to Turbomachinery Including Vertical Operation
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Topics: Foil bearings, Turbomachinery, Bearings, Machinery, Journal bearings, Aircraft, Cryogenics, Cycles, Design, Gas turbines