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Rafael O. Ruiz
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Proceedings Papers

Resonator-Based Piezoelectric Metastructures: Efficient Bandgap Estimation and Parametric Analysis

Diego Astudillo, Rafael O. Ruiz
Proc. ASME. IMECE2023, Volume 1: Acoustics, Vibration, and Phononics, V001T01A006, October 29–November 2, 2023
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2023-110579
https://doi.org/10.1115/IMECE2023-110579
View Paper titled, Resonator-Based Piezoelectric Metastructures: Efficient Bandgap Estimation and Parametric Analysis
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Topics: Energy gap, Piezoelectric energy harvesting, Cantilevers, Energy harvesting, Metamaterials, Periodic structures, Vibration suppression, Waves, Design, Finite element model
Journal Articles

Tuning Nonlinear Model Parameters in Piezoelectric Energy Harvesters to Match Experimental Data

Alejandro Poblete, Patricio Peralta, Rafael O. Ruiz
Journal: ASCE-ASME J Risk and Uncert in Engrg Sys Part B Mech Engrg
Publisher: ASME
Article Type: Research-Article
ASME J. Risk Uncertainty Part B. March 2021, 7(1): 010904.
Paper No: RISK-19-1084
https://doi.org/10.1115/1.4049202
Published Online: January 21, 2021
View Article titled, Tuning Nonlinear Model Parameters in Piezoelectric Energy Harvesters to Match Experimental Data
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Topics: Chain, Energy harvesting, Errors, Frequency response, Probability, Uncertainty, Excitation, Design, Density
Proceedings Papers

Bayesian Framework to Quantify Uncertainties in Piezoelectric Energy Harvesters

Patricio Peralta, Rafael O. Ruiz, Viviana Meruane
Proc. ASME. VVS2018, ASME 2018 Verification and Validation Symposium, V001T04A002, May 16–18, 2018
Publisher: American Society of Mechanical Engineers
Paper No: VVS2018-9318
https://doi.org/10.1115/VVS2018-9318
View Paper titled, Bayesian Framework to Quantify Uncertainties in Piezoelectric Energy Harvesters
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Topics: Energy harvesting, Uncertainty, Design, Approximation, Density, Errors, Experimental characterization, Probability
Proceedings Papers

Framework to Quantify Uncertainties in Piezoelectric Energy Harvesters

Rafael O. Ruiz, Viviana Meruane
Proc. ASME. IMECE2016, Volume 4B: Dynamics, Vibration, and Control, V04BT05A057, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-65699
https://doi.org/10.1115/IMECE2016-65699
View Paper titled, Framework to Quantify Uncertainties in Piezoelectric Energy Harvesters
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Topics: Energy harvesting, Uncertainty, Chaos, Density, Design, Errors, Excitation, Frequency response, Probability
Proceedings Papers

Effect of Uncertainties in the Estimation of Dynamic Coefficients on Tilting Pad Journal Bearings

Rafael O. Ruiz, Sergio E. Diaz
Proc. ASME. IMECE2016, Volume 4B: Dynamics, Vibration, and Control, V04BT05A030, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-67252
https://doi.org/10.1115/IMECE2016-67252
View Paper titled, Effect of Uncertainties in the Estimation of Dynamic Coefficients on Tilting Pad Journal Bearings
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Topics: Journal bearings, Uncertainty, Clearances (Engineering), Bearings, Simulation, Density, Interpolation, Manufacturing, Probability, Statistical analysis
Proceedings Papers

A View to the Energy Dissipation Mechanism of a Gas Foil Bearing’s Structure due to Dry Friction

José A. Matute, Rafael O. Ruiz, Sergio E. Diaz
Proc. ASME. GT2012, Volume 7: Structures and Dynamics, Parts A and B, 911-920, June 11–15, 2012
Publisher: American Society of Mechanical Engineers
Paper No: GT2012-68926
https://doi.org/10.1115/GT2012-68926
View Paper titled, A View to the Energy Dissipation Mechanism of a Gas Foil Bearing’s Structure due to Dry Friction
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Topics: Dry friction, Energy dissipation, Damping, Stick-slip, Stiffness, Computer software, Curve fitting, Deformation, Excitation, Foil bearings
Proceedings Papers

Asynchronous Dynamic Coefficients of a Three Lobe Air Bearing

Rafael O. Ruiz, Marcelo H. Di Liscia, Luis Medina, Sergio Di´az
Proc. ASME. GT2007, Volume 5: Turbo Expo 2007, 961-969, May 14–17, 2007
Publisher: American Society of Mechanical Engineers
Paper No: GT2007-27919
https://doi.org/10.1115/GT2007-27919
View Paper titled, Asynchronous Dynamic Coefficients of a Three Lobe Air Bearing
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Topics: Air bearings, Bearings, Excitation, Whirls, Actuators, Dynamic response, Gas bearings, Journal bearings, Magnetic bearings, Rotordynamics
Proceedings Papers

Experimental Measurement of a Three Lobe Air Bearing Rotordynamic Coefficients

Rafael O. Ruiz, Marcelo H. Di Liscia, Sergio Di´az, Luis Medina
Proc. ASME. GT2006, Volume 5: Marine; Microturbines and Small Turbomachinery; Oil and Gas Applications; Structures and Dynamics, Parts A and B, 1377-1385, May 8–11, 2006
Publisher: American Society of Mechanical Engineers
Paper No: GT2006-91068
https://doi.org/10.1115/GT2006-91068
View Paper titled, Experimental Measurement of a Three Lobe Air Bearing Rotordynamic Coefficients
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Topics: Actuators, Air bearings, Bearings, Excitation, Fluid films, Gas bearings, Journal bearings, Magnetic bearings, Pressure drop, Whirls
Journal Articles

Asynchronous Dynamic Coefficients of a Three-Lobe Air Bearing

Rafael O. Ruiz, Marcelo H. Di Liscia, Luis U. Medina, Sergio E. Díaz
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research Papers
J. Eng. Gas Turbines Power. September 2008, 130(5): 052502.
https://doi.org/10.1115/1.2772635
Published Online: June 18, 2008
View Article titled, Asynchronous Dynamic Coefficients of a Three-Lobe Air Bearing
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Topics: Air bearings, Bearings, Damping, Excitation, Stiffness, Magnetic bearings, Gas bearings, Whirls, Computer simulation, Rotors