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J. B. Roberts
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Journal Articles

Energy-Based Stochastic Estimation for Nonlinear Oscillators With Random Excitation

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J. B. Roberts, M. Vasta
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. December 2000, 67(4): 763–771.
https://doi.org/10.1115/1.1330546
Published Online: August 14, 2000
View Articletitled, Energy-Based Stochastic Estimation for Nonlinear Oscillators With Random Excitation
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Topics: Damping, Excitation, Stiffness, Diffusion (Physics), Random excitation, Potential energy, Markov processes
Journal Articles

Local Similarity in Nonlinear Random Vibration

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S. Krenk, J. B. Roberts
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Technical Papers
J. Appl. Mech. March 1999, 66(1): 225–235.
https://doi.org/10.1115/1.2789151
Published Online: March 1, 1999
View Articletitled, Local Similarity in Nonlinear Random Vibration
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Topics: Computer simulation, Damping, Density, Differential equations, Energy levels (Quantum mechanics), Excitation, Probability, Random noise, Random vibration, Spectral energy distribution
Journal Articles

Solutions for the Combined Motion of Finite Length Squeeze Film Dampers Around the Bearing Center

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J. X. Zhang, J. B. Roberts
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 1996, 118(3): 617–622.
https://doi.org/10.1115/1.2831581
Published Online: July 1, 1996
View Articletitled, Solutions for the Combined Motion of Finite Length Squeeze Film Dampers Around the Bearing Center
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Topics: Bearings, Dampers, Flow (Dynamics), Fluid-dynamic forces, Fluids, Inertia (Mechanics), Lubrication, Stress
Journal Articles

Force Coefficients for a Centrally Grooved Short Squeeze Film Damper

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J. X. Zhang, J. B. Roberts
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 1996, 118(3): 608–616.
https://doi.org/10.1115/1.2831580
Published Online: July 1, 1996
View Articletitled, Force Coefficients for a Centrally Grooved Short Squeeze Film Damper
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Topics: Dampers, Damping, Fluid-dynamic forces, Fluids, Inertia (Mechanics), Lubricants, Pressure
Journal Articles

Experimental Behavior of a Short Cylindrical Squeeze Film Damper Executing Circular Centered Orbits

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J. Zhang, J. B. Roberts, J. Ellis
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. July 1994, 116(3): 528–534.
https://doi.org/10.1115/1.2928876
Published Online: July 1, 1994
View Articletitled, Experimental Behavior of a Short Cylindrical Squeeze Film Damper Executing Circular Centered Orbits
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Topics: Dampers, Fluids, Algebra, Cavitation, Inertia (Mechanics), Pressure, Signals, Stiffness
Journal Articles

Observations on the Nonlinear Fluid Forces in Short Cylindrical Squeeze Film Dampers

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J. Zhang, J. Ellis, J. B. Roberts
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 1993, 115(4): 692–698.
https://doi.org/10.1115/1.2921695
Published Online: October 1, 1993
View Articletitled, Observations on the Nonlinear Fluid Forces in Short Cylindrical Squeeze Film Dampers
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Topics: Dampers, Fluids, Inertia (Mechanics), Navier-Stokes equations
Journal Articles

An Experimental Study of the Nonlinear Behavior of a Squeeze-Film Bearing

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J. B. Roberts, J. Ellis, A. Carrasco
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1993, 115(2): 312–318.
https://doi.org/10.1115/1.2921008
Published Online: April 1, 1993
View Articletitled, An Experimental Study of the Nonlinear Behavior of a Squeeze-Film Bearing
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Topics: Bearings
Journal Articles

Estimation of Ship Roll Parameters in Random Waves

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J. B. Roberts, J. F. Dunne, A. Debonos
Journal: Journal of Offshore Mechanics and Arctic Engineering
Publisher: ASME
Article Type: Research Papers
J. Offshore Mech. Arct. Eng. May 1992, 114(2): 114–121.
https://doi.org/10.1115/1.2919958
Published Online: May 1, 1992
View Articletitled, Estimation of Ship Roll Parameters in Random Waves
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Topics: Damping, Degrees of freedom, Equations of motion, Seas, Ships, Waves
Journal Articles

A Programmable Electromagnetic Bearing for Vibration Control of a Flexible Shaft

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C. D. Bradfield, J. B. Roberts, S. Karunendiran
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. April 1991, 113(2): 160–166.
https://doi.org/10.1115/1.2930164
Published Online: April 1, 1991
View Articletitled, A Programmable Electromagnetic Bearing for Vibration Control of a Flexible Shaft
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Topics: Bearings, Vibration control, Actuators, Computation, Computer software, Damping, Displacement, Rotors, Stiffness, Vibration
Journal Articles

The Complete Determination of Squeeze-Film Linear Dynamic Coefficients From Experimental Data

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J. Ellis, J. B. Roberts, A. Hosseini Sianaki
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. October 1990, 112(4): 712–724.
https://doi.org/10.1115/1.2920320
Published Online: October 1, 1990
View Articletitled, The Complete Determination of Squeeze-Film Linear Dynamic Coefficients From Experimental Data
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Topics: Algorithms, Bearings, Damping, Displacement, Filters, Noise (Sound), Signals, Stiffness
Journal Articles

The Determination of Squeeze Film Dynamic Coefficients From Transient Two-Dimensional Experimental Data

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J. B. Roberts, J. Ellis, A. Hosseini Sianaki
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1990, 112(2): 288–296.
https://doi.org/10.1115/1.2920255
Published Online: April 1, 1990
View Articletitled, The Determination of Squeeze Film Dynamic Coefficients From Transient Two-Dimensional Experimental Data
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Topics: Transients (Dynamics), Bearings, Filters, Noise (Sound), Signals
Journal Articles

Closure to “Discussion of ‘The Determination of Squeeze Film Dynamic Coefficients From Transient Two-Dimensional Experimental Data’” (1990, ASME J. Tribol., 112, pp. 296–297)

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J. B. Roberts, J. Ellis, A. Hosseini Sianaki
Journal: Journal of Tribology
Publisher: ASME
Article Type: Discussions
J. Tribol. April 1990, 112(2): 297–298.
https://doi.org/10.1115/1.2924231
Published Online: April 1, 1990
View Articletitled, Closure to “Discussion of ‘The Determination of Squeeze Film Dynamic Coefficients From Transient Two-Dimensional Experimental Data’” (1990, ASME J. Tribol., 112, pp. 296–297)
Open the PDF for Closure to “Discussion of ‘The Determination of Squeeze Film Dynamic Coefficients From Transient Two-Dimensional Experimental Data’” (1990, ASME J. Tribol., 112, pp. 296–297) in another window
Topics: Transients (Dynamics)
Journal Articles

The Experimental Determination of Squeeze-Film Dynamic Coefficients Using the State Variable Filter Method of Parametric Identification

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J. Ellis, J. B. Roberts, M. D. Ramli
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1989, 111(2): 252–259.
https://doi.org/10.1115/1.3261901
Published Online: April 1, 1989
View Articletitled, The Experimental Determination of Squeeze-Film Dynamic Coefficients Using the State Variable Filter Method of Parametric Identification
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Topics: Filters, Stiffness, Damping, Excitation, Weight (Mass), Bearings, Dampers, Electromagnetic scattering, Fluid films, Magnesium alloys
Journal Articles

A Comparison of Identification Methods for Estimating Squeeze-Film Damper Coefficients

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J. Ellis, J. B. Roberts, A. Hosseini Sianaki
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 1988, 110(1): 119–127.
https://doi.org/10.1115/1.3261549
Published Online: January 1, 1988
View Articletitled, A Comparison of Identification Methods for Estimating Squeeze-Film Damper Coefficients
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Topics: Dampers, Damping, Degrees of freedom, Filters, Inertia (Mechanics), Stiffness, Transients (Dynamics)
Journal Articles

Determination of Squeeze-Film Dynamic Coefficients From Experimental Transient Data

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M. D. Ramli, J. B. Roberts, J. Ellis
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. January 1987, 109(1): 155–163.
https://doi.org/10.1115/1.3261308
Published Online: January 1, 1987
View Articletitled, Determination of Squeeze-Film Dynamic Coefficients From Experimental Transient Data
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Topics: Bearings, Damping, Displacement, Optimization, Transients (Dynamics), Vibration
Journal Articles

Pressure Distributions in a Superlaminar Journal Bearing

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J. B. Roberts, R. E. Hinton
Journal: Journal of Tribology
Publisher: ASME
Article Type: Research Papers
J. Tribol. April 1982, 104(2): 187–195.
https://doi.org/10.1115/1.3253179
Published Online: April 1, 1982
View Articletitled, Pressure Distributions in a Superlaminar Journal Bearing
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Topics: Journal bearings, Pressure, Bearings, Friction, Lubricants, Pressure measurement, Reynolds number
Journal Articles

An Experimental Study of First-Passage Failure of a Randomly Excited Structure

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J. B. Roberts, S. N. Yousri
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. December 1978, 45(4): 917–922.
https://doi.org/10.1115/1.3424441
Published Online: December 1, 1978
View Articletitled, An Experimental Study of First-Passage Failure of a Randomly Excited Structure
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Topics: Cantilevers, Cycles, Damping, Energy dissipation, Failure
Journal Articles

The Response of an Oscillator With Bilinear Hysteresis to Stationary Random Excitation

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J. B. Roberts
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. December 1978, 45(4): 923–928.
https://doi.org/10.1115/1.3424442
Published Online: December 1, 1978
View Articletitled, The Response of an Oscillator With Bilinear Hysteresis to Stationary Random Excitation
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Topics: Computer simulation, Displacement, Random excitation, Stochastic processes
Journal Articles

First-Passage Time for Oscillators With Nonlinear Damping

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J. B. Roberts
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. March 1978, 45(1): 175–180.
https://doi.org/10.1115/1.3424223
Published Online: March 1, 1978
View Articletitled, First-Passage Time for Oscillators With Nonlinear Damping
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Topics: Damping, Fokker-Planck equation, Computer simulation, Failure, Markov processes, Probability
Journal Articles

Probability of First-Passage Failure for Nonstationary Random Vibration

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J. B. Roberts
Journal: Journal of Applied Mechanics
Publisher: ASME
Article Type: Research Papers
J. Appl. Mech. September 1975, 42(3): 716–720.
https://doi.org/10.1115/1.3423668
Published Online: September 1, 1975
View Articletitled, Probability of First-Passage Failure for Nonstationary Random Vibration
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Topics: Failure, Probability, Random vibration, Harmonic oscillators, Random excitation, White noise