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Gizem D. Acar
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Journal Articles

A Floquet-Based Analysis of Parametric Excitation Through the Damping Coefficient

Fatemeh Afzali, Gizem D. Acar, Brian F. Feeny
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. August 2021, 143(4): 041003.
Paper No: VIB-20-1038
https://doi.org/10.1115/1.4048392
Published Online: November 10, 2020
View Article titled, A Floquet-Based Analysis of Parametric Excitation Through the Damping Coefficient
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Topics: Damping, Excitation, Stability
Journal Articles

Parametric Resonances of a Three-Blade-Rotor System With Reference to Wind Turbines

Gizem D. Acar, Mustafa A. Acar, Brian F. Feeny
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 2020, 142(2): 021013.
Paper No: VIB-19-1290
https://doi.org/10.1115/1.4045773
Published Online: January 24, 2020
View Article titled, Parametric Resonances of a Three-Blade-Rotor System With Reference to Wind Turbines
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Topics: Blades, Resonance, Rotors, Excitation, Wind turbines
Proceedings Papers

Numerical Study of Superharmonic Resonances in a Mistuned Horizontal-Axis Wind-Turbine Blade-Rotor Set

Ayse Sapmaz, Gizem D. Acar, Brian F. Feeny
Proc. ASME. IDETC-CIE2019, Volume 8: 31st Conference on Mechanical Vibration and Noise, V008T10A050, August 18–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: DETC2019-98010
https://doi.org/10.1115/DETC2019-98010
View Paper titled, Numerical Study of Superharmonic Resonances in a Mistuned Horizontal-Axis Wind-Turbine Blade-Rotor Set
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Topics: Blades, Resonance, Rotors, Wind turbines, Aerodynamics, Computer simulation, Damping, Dynamics (Mechanics), Excitation, Gravity (Force)
Proceedings Papers

Response Characteristics of Systems With Two-Harmonic Parametric Excitation

Fatemeh Afzali, Gizem D. Acar, Brian F. Feeny
Proc. ASME. IDETC-CIE2018, Volume 6: 14th International Conference on Multibody Systems, Nonlinear Dynamics, and Control, V006T09A048, August 26–29, 2018
Publisher: American Society of Mechanical Engineers
Paper No: DETC2018-86140
https://doi.org/10.1115/DETC2018-86140
View Paper titled, Response Characteristics of Systems With Two-Harmonic Parametric Excitation
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Topics: Excitation, Damping, Fourier series, Stability
Journal Articles

Approximate Floquet Analysis of Parametrically Excited Multi-Degree-of-Freedom Systems With Application to Wind Turbines

Gizem D. Acar, Brian F. Feeny
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. February 2019, 141(1): 011004.
Paper No: VIB-18-1107
https://doi.org/10.1115/1.4040522
Published Online: July 24, 2018
View Article titled, Approximate Floquet Analysis of Parametrically Excited Multi-Degree-of-Freedom Systems With Application to Wind Turbines
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Topics: Blades, Stability, Stiffness, Wind turbines, Eigenvalues, Excitation, Horizontal axis wind turbines, Springs, Gravity (Force), Equations of motion
Proceedings Papers

Analysis of the Periodic Damping Coefficient Equation Based on Floquet Theory

Fatemeh Afzali, Gizem D. Acar, Brian F. Feeny
Proc. ASME. IDETC-CIE2017, Volume 8: 29th Conference on Mechanical Vibration and Noise, V008T12A050, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-68450
https://doi.org/10.1115/DETC2017-68450
View Paper titled, Analysis of the Periodic Damping Coefficient Equation Based on Floquet Theory
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Topics: Damping, Stability, Differential equations
Proceedings Papers

In-Plane Blade-Hub Dynamics of Horizontal-Axis Wind Turbine With Mistuned Blades

Ayse Sapmaz, Gizem D. Acar, Brian Feeny
Proc. ASME. IDETC-CIE2017, Volume 8: 29th Conference on Mechanical Vibration and Noise, V008T12A033, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-67687
https://doi.org/10.1115/DETC2017-67687
View Paper titled, In-Plane Blade-Hub Dynamics of Horizontal-Axis Wind Turbine With Mistuned Blades
Open the PDF for In-Plane Blade-Hub Dynamics of Horizontal-Axis Wind Turbine With Mistuned Blades in another window
Topics: Blades, Dynamics (Mechanics), Horizontal axis wind turbines, Wind turbines, Resonance, Aerodynamics, Equations of motion, Excitation, Fluid-dynamic forces, Rotors