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Proceedings Papers

Numerical Investigation of the Effect of Flutter Instability of the Blade on the Unsteady Flow in a Modern Low-Pressure Turbine

Shine Win Naung, Mohammad Rahmati, Hamed Farokhi
Proc. ASME. GT2020, Volume 10A: Structures and Dynamics, V10AT24A022, September 21–25, 2020
Paper No: GT2020-15959
DOI: https://doi.org/10.1115/GT2020-15959
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Topics: Aeroelasticity, Blades, Computer simulation, Flutter (Aerodynamics), Pressure, Turbines, Unsteady flow
Proceedings Papers

Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

Shine Win Naung, Mohammad Rahmati, Hamed Farokhi
Proc. ASME. GT2020, Volume 12: Wind Energy, V012T42A014, September 21–25, 2020
Paper No: GT2020-15705
DOI: https://doi.org/10.1115/GT2020-15705
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Topics: Computational fluid dynamics, Wind turbines
Journal Articles

Aeromechanical Analysis of a Complete Wind Turbine Using Nonlinear Frequency Domain Solution Method

Shine Win Naung, Mohammad Rahmati, Hamed Farokhi
Journal: Journal of Engineering for Gas Turbines and Power
Article Type: Research-Article
J. Eng. Gas Turbines Power. January 2021, 143(1): 011018.
Paper No: GTP-20-1672
DOI: https://doi.org/10.1115/1.4049206
Published Online: January 4, 2021
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Topics: Blades, Flow (Dynamics), Rotors, Wind turbines, Simulation, Computational fluid dynamics, Fluid structure interaction
Journal Articles

Efficient Broadband Vibration Energy Harvesting Using Multiple Piezoelectric Bimorphs

Hamed Farokhi, Alireza Gholipour, Mergen H. Ghayesh
Journal: Journal of Applied Mechanics
Article Type: Research Papers
J. Appl. Mech. April 2020, 87(4): 041001.
Paper No: JAM-19-1523
DOI: https://doi.org/10.1115/1.4045529
Published Online: December 24, 2019
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Topics: Circuits, Design, Energy harvesting, Resonance, Vibration, Stress, Frequency response
Proceedings Papers

Aeromechanical Analysis of Wind Turbines Using Non-Linear Harmonic Method

Shine Win Naung, Mohammad Rahmati, Hamed Farokhi
Proc. ASME. OMAE2019, Volume 10: Ocean Renewable Energy, V010T09A060, June 9–14, 2019
Paper No: OMAE2019-96256
DOI: https://doi.org/10.1115/OMAE2019-96256
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Topics: Wind turbines, Aerodynamics, Computational methods, Flow (Dynamics), Rotors, Turbomachinery
Proceedings Papers

Aerodynamic Analysis of a Wind Turbine With Elevated Inflow Turbulence and Wake Using Harmonic Method

Shine Win Naung, Mohammad Rahmati, Hamed Farokhi
Proc. ASME. OMAE2019, Volume 10: Ocean Renewable Energy, V010T09A062, June 9–14, 2019
Paper No: OMAE2019-96769
DOI: https://doi.org/10.1115/OMAE2019-96769
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Topics: Inflow, Turbulence, Wakes, Wind turbines, Computational fluid dynamics, Blades, Simulation, Flow (Dynamics), Pressure, Wind
Journal Articles

Nonlinear Mechanics of Beams With Partial Piezoelectric Layers

Hamed Farokhi, Mergen H. Ghayesh
Journal: Journal of Applied Mechanics
Article Type: Research Papers
J. Appl. Mech. October 2019, 86(10): 101011.
Paper No: JAM-19-1279
DOI: https://doi.org/10.1115/1.4044241
Published Online: August 31, 2019
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Topics: Dimensions, Dynamics (Mechanics), Finite element analysis, Resonance, Displacement, Computer simulation, Constitutive equations, Dynamic response, Energy transformation, Degrees of freedom
Journal Articles

Nonsymmetric Nonlinear Dynamics of Piezoelectrically Actuated Beams

Mergen H. Ghayesh, Hamed Farokhi
Journal: Journal of Vibration and Acoustics
Article Type: Research-Article
J. Vib. Acoust. October 2019, 141(5): 051012.
Paper No: VIB-18-1350
DOI: https://doi.org/10.1115/1.4043716
Published Online: June 14, 2019
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Topics: Displacement, Finite element analysis, Finite element model, Nonlinear dynamics, Oscillations, Resonance, Stress, Degrees of freedom, Hamilton's principle, Computer-aided engineering
Journal Articles

A New Geometrically Exact Model for Buckling and Postbuckling Statics and Dynamics of Beams

Hamed Farokhi, Mergen H. Ghayesh
Journal: Journal of Applied Mechanics
Article Type: Research-Article
J. Appl. Mech. July 2019, 86(7): 071001.
Paper No: JAM-19-1061
DOI: https://doi.org/10.1115/1.4043144
Published Online: April 12, 2019
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Topics: Buckling, Stress, Finite element analysis
Journal Articles

Extremely Large Oscillations of Cantilevers Subject to Motion Constraints

Hamed Farokhi, Mergen H. Ghayesh
Journal: Journal of Applied Mechanics
Article Type: Research-Article
J. Appl. Mech. March 2019, 86(3): 031001.
Paper No: JAM-18-1434
DOI: https://doi.org/10.1115/1.4041964
Published Online: December 17, 2018
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Topics: Cantilevers, Oscillations
Journal Articles

Resonance Responses of Geometrically Imperfect Functionally Graded Extensible Microbeams

Mergen H. Ghayesh, Hamed Farokhi, Alireza Gholipour, Shahid Hussain, Maziar Arjomandi
Journal: Journal of Computational and Nonlinear Dynamics
Article Type: Research-Article
J. Comput. Nonlinear Dynam. September 2017, 12(5): 051002.
Paper No: CND-16-1265
DOI: https://doi.org/10.1115/1.4035214
Published Online: March 9, 2017
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Topics: Microbeams, Frequency response
Journal Articles

Nonlinear Dynamical Behavior of Axially Accelerating Beams: Three-Dimensional Analysis

Mergen H. Ghayesh, Hamed Farokhi
Journal: Journal of Computational and Nonlinear Dynamics
Article Type: Research-Article
J. Comput. Nonlinear Dynam. January 2016, 11(1): 011010.
Paper No: CND-14-1316
DOI: https://doi.org/10.1115/1.4029905
Published Online: January 1, 2016
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Topics: Bifurcation, Poincaré maps, Dynamics (Mechanics)
Journal Articles

Coupled Nonlinear Dynamics of Geometrically Imperfect Shear Deformable Extensible Microbeams

Mergen H. Ghayesh, Hamed Farokhi
Journal: Journal of Computational and Nonlinear Dynamics
Article Type: Research-Article
J. Comput. Nonlinear Dynam. July 2016, 11(4): 041001.
Paper No: CND-14-1312
DOI: https://doi.org/10.1115/1.4031288
Published Online: November 13, 2015
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Topics: Frequency response, Microbeams, Rotation, Shear (Mechanics), Stress, Resonance, Nonlinear dynamics, Dynamics (Mechanics), Bifurcation
Journal Articles

Internal Energy Transfer in Dynamical Behavior of Slightly Curved Shear Deformable Microplates

Mergen H. Ghayesh, Hamed Farokhi, Gursel Alici
Journal: Journal of Computational and Nonlinear Dynamics
Article Type: Research-Article
J. Comput. Nonlinear Dynam. July 2016, 11(4): 041002.
Paper No: CND-15-1051
DOI: https://doi.org/10.1115/1.4031290
Published Online: November 13, 2015
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Topics: Damping, Energy transformation, Frequency response, Internal energy (Physics), Microplates, Resonance, Shear (Mechanics), Stress, Stability, Displacement
Journal Articles

Three-Dimensional Nonlinear Global Dynamics of Axially Moving Viscoelastic Beams

Hamed Farokhi, Mergen H. Ghayesh, Shahid Hussain
Journal: Journal of Vibration and Acoustics
Article Type: Research-Article
J. Vib. Acoust. February 2016, 138(1): 011007.
Paper No: VIB-15-1064
DOI: https://doi.org/10.1115/1.4031600
Published Online: October 26, 2015
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Topics: Bifurcation, Dynamics (Mechanics), Energy dissipation, Internal energy (Physics)
Proceedings Papers

Stability and Bifurcations in Three-Dimensional Analysis of Axially Moving Beams

Mergen H. Ghayesh, Marco Amabili, Hamed Farokhi
Proc. ASME. IMECE2013, Volume 4A: Dynamics, Vibration and Control, V04AT04A053, November 15–21, 2013
Paper No: IMECE2013-65458
DOI: https://doi.org/10.1115/IMECE2013-65458
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Topics: Bifurcation, Stability, Differential equations, Equations of motion, Fast Fourier transforms, Frequency response, Hamilton's principle, Nonlinear dynamics, Partial differential equations, Resonance