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Journal Articles

Numerical and Experimental Investigation of Rubbing Existence in the Context of a Rotating Machine Under Base Excitation

Marcelo Samora Sousa, Jr., Aldemir Ap. Cavallini, Jr., Valder Steffen, Jr., Yvon Briend, Eric Chatelet, Régis Dufour
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. August 2025, 147(4): 041001.
Paper No: VIB-24-1232
https://doi.org/10.1115/1.4068108
Published Online: April 2, 2025
View Articletitled, Numerical and Experimental Investigation of Rubbing Existence in the Context of a Rotating Machine Under Base Excitation
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Topics: Excitation, Machinery, Rotors, Vibration, Stators, Disks
Journal Articles

Dynamic Behavior of a Tilting-Pad Thrust Bearing Operating Under a Hybrid Lubrication Regime

Jefferson Silva Barbosa, Aldemir Ap Cavallini, Jr, Ilmar Ferreira Santos, Valder Steffen, Jr
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. November 2023, 145(11): 114101.
Paper No: TRIB-22-1193
https://doi.org/10.1115/1.4062817
Published Online: July 12, 2023
View Articletitled, Dynamic Behavior of a Tilting-Pad Thrust Bearing Operating Under a Hybrid Lubrication Regime
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Topics: Bearings, Damping, Lubrication, Pressure, Stiffness, Thrust bearings, Rotors, Stress
Journal Articles

Kriging-Based Surrogate Controller for Robust Control of a Flexible Rotor Supported by Active Magnetic Bearings

Marcus V. F. De Oliveira, Leonardo C. Sicchieri, Arinan De Piemonte Dourado, Aldemir Ap. Cavallini, Jr., Valder Steffen, Jr.
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. July 2023, 145(7): 071005.
Paper No: GTP-22-1488
https://doi.org/10.1115/1.4062104
Published Online: April 19, 2023
View Articletitled, Kriging-Based Surrogate Controller for Robust Control of a Flexible Rotor Supported by Active Magnetic Bearings
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Topics: Control equipment, Rotors, Magnetic bearings, Vibration
Journal Articles

Kriging Approach Dedicated to Represent Hydrodynamic Bearings

Jefferson Silva Barbosa, Leonardo Campanine Sicchieri, Arinan De Piemonte Dourado, Aldemir Ap Cavalini, Jr., Valder Steffen, Jr.
Journal: Journal of Engineering for Gas Turbines and Power
Publisher: ASME
Article Type: Research-Article
J. Eng. Gas Turbines Power. June 2021, 143(6): 061016.
Paper No: GTP-20-1197
https://doi.org/10.1115/1.4049307
Published Online: March 31, 2021
View Articletitled, Kriging Approach Dedicated to Represent Hydrodynamic Bearings
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Topics: Bearings
Proceedings Papers

On Time Domain Identification and Sensitivity Analysis Using Orthogonal Functions

Ricardo P. Pacheco, Valder Steffen, Jr.
Proc. ASME. DETC99, Volume 7B: 17th Biennial Conference on Mechanical Vibration and Noise, 2837-2845, September 12–16, 1999
Publisher: American Society of Mechanical Engineers
Paper No: DETC99/VIB-8365
https://doi.org/10.1115/DETC99/VIB-8365
View Paper titled, On Time Domain Identification and Sensitivity Analysis Using Orthogonal Functions
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Topics: Sensitivity analysis
Proceedings Papers

Evaluation of the ISHM Method Applied for Composite Rotors

Karina M. Tsuruta, Lucas A. A. Rocha, Aldemir Ap. Cavalini, Jr, Roberto M. Finzi Neto, Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2019, Volume 8: 31st Conference on Mechanical Vibration and Noise, V008T10A056, August 18–21, 2019
Publisher: American Society of Mechanical Engineers
Paper No: DETC2019-98119
https://doi.org/10.1115/DETC2019-98119
View Paper titled, Evaluation of the ISHM Method Applied for Composite Rotors
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Topics: Composite materials, Damage, Rotors, Structural health monitoring
Journal Articles

Evaluation of Parametric Models Dedicated to a Magnetorheological Actuator Including Uncertainty and Sensitivity Analyses

Philippe C. Fernandes Teixeira, Núbia dos Santos Saad, Fabian Andres Lara-Molina, Aldemir Ap Cavalini, Jr., Valder Steffen, Jr.
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. December 2019, 5(4): 041003.
Paper No: RISK-18-1049
https://doi.org/10.1115/1.4044039
Published Online: September 25, 2019
View Articletitled, Evaluation of Parametric Models Dedicated to a Magnetorheological Actuator Including Uncertainty and Sensitivity Analyses
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Topics: Actuators, Sensitivity analysis, Uncertainty, Electric current, Dampers
Proceedings Papers

Uncertainty Analysis of a Francis Hydropower Unit

Arinan De P. Dourado, Jefferson S. Barbosa, Tobias S. Morais, Aldemir Ap Cavalini, Jr., Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2018, Volume 8: 30th Conference on Mechanical Vibration and Noise, V008T10A022, August 26–29, 2018
Publisher: American Society of Mechanical Engineers
Paper No: DETC2018-85428
https://doi.org/10.1115/DETC2018-85428
View Paper titled, Uncertainty Analysis of a Francis Hydropower Unit
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Topics: Hydropower, Uncertainty analysis, Bearings, Generators, Rotors, Stiffness, Vibration, Damping, Francis turbines, Optimization
Journal Articles

Robust Balancing Approach for Rotating Machines Based on Fuzzy Logic

Vinícius Nunes Carvalho, Bruno Ferreira Resende Rende, Arinan Dourado Guerra Silva, Aldemir Ap Cavalini, Jr., Valder Steffen, Jr.
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. October 2018, 140(5): 051018.
Paper No: VIB-17-1393
https://doi.org/10.1115/1.4039801
Published Online: May 4, 2018
View Articletitled, Robust Balancing Approach for Rotating Machines Based on Fuzzy Logic
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Topics: Fuzzy logic, Machinery, Rotors, Vibration, Rotor vibration, Uncertainty
Proceedings Papers

Fault Detection in Rotating Machinery by Using the Modal State Observer Approach

Leandro de S. Leão, Aldemir Ap. Cavalini, Jr., Tobias S. Morais, Gilberto Pechoto de Melo, Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2017, Volume 8: 29th Conference on Mechanical Vibration and Noise, V008T12A028, August 6–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: DETC2017-67044
https://doi.org/10.1115/DETC2017-67044
View Paper titled, Fault Detection in Rotating Machinery by Using the Modal State Observer Approach
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Topics: Flaw detection, Machinery, State estimation, Fracture (Materials), Vibration, Ball bearings, Disks, Failure, Fracture mechanics, Rotors
Proceedings Papers

Fuzzy Uncertainty Analysis of a Tilting-Pad Journal Bearing

Aldemir Ap Cavalini, Jr., Fabian Andres Lara-Molina, Arinan Dourado, Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2015, Volume 8: 27th Conference on Mechanical Vibration and Noise, V008T13A076, August 2–5, 2015
Publisher: American Society of Mechanical Engineers
Paper No: DETC2015-47586
https://doi.org/10.1115/DETC2015-47586
View Paper titled, Fuzzy Uncertainty Analysis of a Tilting-Pad Journal Bearing
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Topics: Journal bearings, Uncertainty analysis, Bearings, Stress, Uncertainty, Clearances (Engineering), Design, Fuzzy logic, Maintenance, Pressure
Proceedings Papers

Experimental Analysis of a Model Based Crack Identification Approach for Rotating Machines

Aldemir Ap Cavalini, Jr, Leonardo Sanches, Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2014, Volume 8: 26th Conference on Mechanical Vibration and Noise, V008T11A062, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-34485
https://doi.org/10.1115/DETC2014-34485
View Paper titled, Experimental Analysis of a Model Based Crack Identification Approach for Rotating Machines
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Topics: Experimental analysis, Fracture (Materials), Machinery, Excitation, Resonance, Dynamic response, Finite element model, Fracture mechanics, Optimization, Rotors
Proceedings Papers

Engineering System Design Using Firefly Algorithm and Multi-Objective Optimization

Fran Se´rgio Lobato, Edu Barbosa Arruda, Aldemir Ap. Cavalini, Jr., Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2011, Volume 2: 31st Computers and Information in Engineering Conference, Parts A and B, 577-585, August 28–31, 2011
Publisher: American Society of Mechanical Engineers
Paper No: DETC2011-47197
https://doi.org/10.1115/DETC2011-47197
View Paper titled, Engineering System Design Using Firefly Algorithm and Multi-Objective Optimization
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Topics: Algorithms, Design, Engineering systems and industry applications, Pareto optimization, Aircraft, Automotive design, Biomimetics
Proceedings Papers

Differential Evolution Applied to the Design of a Three-Dimensional Vehicular Structure

Felipe Antonio Chegury Viana, Fernando Ce´sar Gama de Oliveira, Jose Antonio Ferreria Borges, Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2007, Volume 6: 33rd Design Automation Conference, Parts A and B, 1321-1330, September 4–7, 2007
Publisher: American Society of Mechanical Engineers
Paper No: DETC2007-34290
https://doi.org/10.1115/DETC2007-34290
View Paper titled, Differential Evolution Applied to the Design of a Three-Dimensional Vehicular Structure
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Topics: Design, Algorithms, Optimization, Computer software, Evolutionary algorithms, Finite element analysis, Modeling, Noise (Sound), Optimization algorithms
Proceedings Papers

Balancing of a Highly Flexible Rotor by Using Artificial Neural Networks

Manuel Villafan˜e Saldarriaga, Jarir Mahfoud, Valder Steffen, Jr., Johan Der Hagopian
Proc. ASME. IDETC-CIE2007, Volume 1: 21st Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C, 1093-1099, September 4–7, 2007
Publisher: American Society of Mechanical Engineers
Paper No: DETC2007-34176
https://doi.org/10.1115/DETC2007-34176
View Paper titled, Balancing of a Highly Flexible Rotor by Using Artificial Neural Networks
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Topics: Artificial neural networks, Rotors
Proceedings Papers

Digital Optimal Vibration Control of a Flexible Structure Containing Piezoelectric Elements

Gustavo L. C. M. de Abreu, Jose´ F. Ribeiro, Valder Steffen, Jr.
Proc. ASME. IDETC-CIE2003, Volume 5: 19th Biennial Conference on Mechanical Vibration and Noise, Parts A, B, and C, 1739-1748, September 2–6, 2003
Publisher: American Society of Mechanical Engineers
Paper No: DETC2003/VIB-48514
https://doi.org/10.1115/DETC2003/VIB-48514
View Paper titled, Digital Optimal Vibration Control of a Flexible Structure Containing Piezoelectric Elements
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Topics: Actuators, Cantilever beams, Ceramics, Control equipment, Design, Engineering design processes, Flexible structures, Optimal control, Sensors, Vibration control