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Journal Articles

Exact Algebraic Solution of an Optimal Double-Mass Dynamic Vibration Absorber Attached to a Damped Primary System

Toshihiko Asami
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. October 2019, 141(5): 051013.
Paper No: VIB-18-1480
https://doi.org/10.1115/1.4043815
Published Online: June 14, 2019
View Article titled, Exact Algebraic Solution of an Optimal Double-Mass Dynamic Vibration Absorber Attached to a Damped Primary System
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Topics: Algebra, Damping, Excitation systems, Optimization, Stability, Transfer functions, Vibration absorbers, Mechanical admittance
Journal Articles

Optimal Design of Double-Mass Dynamic Vibration Absorbers Minimizing the Mobility Transfer Function

Toshihiko Asami, Yoshito Mizukawa, Tomohiko Ise
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. December 2018, 140(6): 061012.
Paper No: VIB-17-1198
https://doi.org/10.1115/1.4040229
Published Online: June 18, 2018
View Article titled, Optimal Design of Double-Mass Dynamic Vibration Absorbers Minimizing the Mobility Transfer Function
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Topics: Mechanical admittance, Optimization, Stability, Transfer functions, Vibration absorbers, Algebra
Proceedings Papers

Vibration Suppression Performance of a Desktop Vibration Isolator Supported by Four Air Spring

Yuichi Baba, Kento Onishi, Toshihiko Asami
Proc. ASME. PVP2017, Volume 5: High-Pressure Technology; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD); SPC Track for Senate, V005T11A002, July 16–20, 2017
Publisher: American Society of Mechanical Engineers
Paper No: PVP2017-65109
https://doi.org/10.1115/PVP2017-65109
View Paper titled, Vibration Suppression Performance of a Desktop Vibration Isolator Supported by Four Air Spring
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Topics: Springs, Vibration isolators, Vibration suppression, Reservoirs, Pipes, Damping, Measuring instruments, Resonance, Vibration isolation
Journal Articles

Erratum: “Optimal Design of Double-Mass Dynamic Vibration Absorbers Arranged in Series or in Parallel” [ASME J. Vib. Acoust., 2017, 139(1), p. 011015; DOI: 10.1115/1.4034776]

Toshihiko Asami
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Errata
J. Vib. Acoust. April 2018, 140(2): 027001.
Paper No: VIB-16-1558
https://doi.org/10.1115/1.4038108
Published Online: October 20, 2017
View Article titled, Erratum: “Optimal Design of Double-Mass Dynamic Vibration Absorbers Arranged in Series or in Parallel” [ASME J. Vib. Acoust., 2017, 139(1), p. 011015; DOI: 10.1115/1.4034776]
Open the PDF for Erratum: “Optimal Design of Double-Mass Dynamic Vibration Absorbers Arranged in Series or in Parallel” [ASME J. Vib. Acoust., 2017, 139(1), p. 011015; DOI: 10.1115/1.4034776] in another window
Topics: Damping, Design, Dynamics (Mechanics), Vibration absorbers, Vibration isolation
Journal Articles

Pressure Sensitive Paint Visualization of Pressure Distribution of Externally Pressurized Circular Thrust Gas Bearing With a Single Gas Supply Hole: Experimental Validation of Variation of Pressure Distribution by Supply Pressure

Tomohiko Ise, Shuma Kobayashi, Kazuhiro Itoh, Toshihiko Asami
Journal: Journal of Tribology
Publisher: ASME
Article Type: Technical Briefs
J. Tribol. September 2017, 139(5): 054501.
Paper No: TRIB-16-1167
https://doi.org/10.1115/1.4035156
Published Online: April 6, 2017
View Article titled, Pressure Sensitive Paint Visualization of Pressure Distribution of Externally Pressurized Circular Thrust Gas Bearing With a Single Gas Supply Hole: Experimental Validation of Variation of Pressure Distribution by Supply Pressure
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Topics: Bearings, Gas bearings, Pressure, Thrust, Paints, Numerical analysis, Visualization
Proceedings Papers

Numerical Analysis of an Air Spring With Two Tanks Connected by a Long Pipe: Effect of Orifice Installed in the Pipe

Masatoshi Toji, Toshihiko Asami, Tomohiko Ise
Proc. ASME. PVP2016, Volume 5: High-Pressure Technology; Rudy Scavuzzo Student Paper Symposium and 24th Annual Student Paper Competition; ASME Nondestructive Evaluation, Diagnosis and Prognosis Division (NDPD); Electric Power Research Institute (EPRI) Creep Fatigue Workshop, V005T09A021, July 17–21, 2016
Publisher: American Society of Mechanical Engineers
Paper No: PVP2016-63448
https://doi.org/10.1115/PVP2016-63448
View Paper titled, Numerical Analysis of an Air Spring With Two Tanks Connected by a Long Pipe: Effect of Orifice Installed in the Pipe
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Topics: Numerical analysis, Pipes, Springs, Resonance, Finite difference methods, Frequency response, Inertia (Mechanics), Partial differential equations, Pressure, Vortices
Journal Articles

Optimal Design of Double-Mass Dynamic Vibration Absorbers Arranged in Series or in Parallel

Toshihiko Asami
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. February 2017, 139(1): 011015.
Paper No: VIB-16-1352
https://doi.org/10.1115/1.4034776
Published Online: November 23, 2016
View Article titled, Optimal Design of Double-Mass Dynamic Vibration Absorbers Arranged in Series or in Parallel
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Topics: Optimization, Stability, Vibration absorbers, Design, Damping
Proceedings Papers

Validation of the Accuracy of Approximation in a Design Formula for an Air Spring by Using Numerical Analysis

Toshihiko Asami, Yasutaka Yokota, Masahito Okura, Tomohiko Ise, Itsuro Honda, Hiroya Sakamoto
Proc. ASME. PVP2013, Volume 8: Seismic Engineering, V008T08A008, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97724
https://doi.org/10.1115/PVP2013-97724
View Paper titled, Validation of the Accuracy of Approximation in a Design Formula for an Air Spring by Using Numerical Analysis
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Topics: Approximation, Design, Numerical analysis, Springs, Pipes, Finite difference methods, Flow (Dynamics), Frequency response, Pressure, Turbulence
Proceedings Papers

Analysis of Wave Propagation in Overhead Contact Wire of Trains Using the Transfer Matrix Method

Takahiro Fukui, Toshihiko Asami, Tomohiko Ise
Proc. ASME. PVP2013, Volume 8: Seismic Engineering, V008T08A047, July 14–18, 2013
Publisher: American Society of Mechanical Engineers
Paper No: PVP2013-97850
https://doi.org/10.1115/PVP2013-97850
View Paper titled, Analysis of Wave Propagation in Overhead Contact Wire of Trains Using the Transfer Matrix Method
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Topics: Trains, Wave propagation, Wire, Vibration, Excitation, Vibration analysis, Elasticity, Periodic structures, Wear
Journal Articles

Numerical Analysis of the Internal Flow in an Annular Flow Channel Type Oil Damper

Toshihiko Asami, Itsuro Honda, Atsushi Ueyama
Journal: Journal of Fluids Engineering
Publisher: ASME
Article Type: Research-Article
J. Fluids Eng. March 2014, 136(3): 031101.
Paper No: FE-13-1404
https://doi.org/10.1115/1.4026057
Published Online: December 24, 2013
View Article titled, Numerical Analysis of the Internal Flow in an Annular Flow Channel Type Oil Damper
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Topics: Dampers, Damping, Flow (Dynamics), Numerical analysis, Pistons, Pressure, Cylinders, Fluids
Proceedings Papers

An Approximate Formula to Calculate the Restoring and Damping Forces of an Air Spring With a Small Tube

Toshihiko Asami, Yasutaka Yokota, Tomohiko Ise, Itsuro Honda, Hiroya Sakamoto
Proc. ASME. PVP2012, Volume 8: Seismic Engineering, 127-137, July 15–19, 2012
Publisher: American Society of Mechanical Engineers
Paper No: PVP2012-78481
https://doi.org/10.1115/PVP2012-78481
View Paper titled, An Approximate Formula to Calculate the Restoring and Damping Forces of an Air Spring With a Small Tube
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Topics: Damping, Springs, Frequency response, Resonance, Automobiles, Elastic constants, Flow (Dynamics), Harmonic motion, Railway vehicles, Vibration
Journal Articles

An Approximate Formula to Calculate the Restoring and Damping Forces of an Air Spring With a Small Pipe

Toshihiko Asami, Yasutaka Yokota, Tomohiko Ise, Itsuro Honda, Hiroya Sakamoto
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. October 2013, 135(5): 051029.
Paper No: VIB-12-1117
https://doi.org/10.1115/1.4023820
Published Online: July 1, 2013
View Article titled, An Approximate Formula to Calculate the Restoring and Damping Forces of an Air Spring With a Small Pipe
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Topics: Damping, Pipes, Springs, Flow (Dynamics), Pressure, Elastic constants
Journal Articles

Theoretical and Experimental Analysis of the Nonlinear Characteristics of an Air Spring With an Orifice

Toshihiko Asami, Yasutaka Yokota, Tomohiko Ise, Itsuro Honda, Hiroya Sakamoto
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. February 2013, 135(1): 011012.
Paper No: VIB-11-1244
https://doi.org/10.1115/1.4007677
Published Online: February 4, 2013
View Article titled, Theoretical and Experimental Analysis of the Nonlinear Characteristics of an Air Spring With an Orifice
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Topics: Damping, Elastic constants, Springs, Pressure
Proceedings Papers

Theoretical and Experimental Analysis of the Non-Linear Characteristics of an Air Spring With an Orifice

Yasutaka Yokota, Toshihiko Asami, Tomohiko Ise, Itsuro Honda, Hiroya Sakamoto
Proc. ASME. PVP2011, Volume 4: Fluid-Structure Interaction, 487-495, July 17–21, 2011
Publisher: American Society of Mechanical Engineers
Paper No: PVP2011-57295
https://doi.org/10.1115/PVP2011-57295
View Paper titled, Theoretical and Experimental Analysis of the Non-Linear Characteristics of an Air Spring With an Orifice
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Topics: Experimental analysis, Springs, Damping, Dampers, Design, Elastic constants, Flow (Dynamics), Rails, Vibration isolation
Journal Articles

Closed-Form Exact Solution to H ∞ Optimization of Dynamic Vibration Absorbers (Application to Different Transfer Functions and Damping Systems)

Toshihiko Asami, Professor, Mem. ASME, Osamu Nishihara, Associate Professor, Mem. ASME
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Briefs
J. Vib. Acoust. July 2003, 125(3): 398–405.
https://doi.org/10.1115/1.1569514
Published Online: June 18, 2003
View Article titled, Closed-Form Exact Solution to H ∞ Optimization of Dynamic Vibration Absorbers (Application to Different Transfer Functions and Damping Systems)
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Topics: Damping, Optimization, Transfer functions, Vibration absorbers, Design
Journal Articles

H 2 Optimization of the Three-Element Type Dynamic Vibration Absorbers

Toshihiko Asami, Osamu Nishihara
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. October 2002, 124(4): 583–592.
https://doi.org/10.1115/1.1501286
Published Online: September 20, 2002
View Article titled, H 2 Optimization of the Three-Element Type Dynamic Vibration Absorbers
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Topics: Optimization, Vibration absorbers, Design, Damping
Journal Articles

Closed-Form Solutions to the Exact Optimizations of Dynamic Vibration Absorbers (Minimizations of the Maximum Amplitude Magnification Factors)

Osamu Nishihara, Associate Professor, Toshihiko Asami, Associate Professor
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. October 2002, 124(4): 576–582.
https://doi.org/10.1115/1.1500335
Published Online: September 20, 2002
View Article titled, Closed-Form Solutions to the Exact Optimizations of Dynamic Vibration Absorbers (Minimizations of the Maximum Amplitude Magnification Factors)
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Topics: Damping, Magnification, Resonance, Vibration absorbers, Algebra, Antiresonance
Journal Articles

Analytical Solutions to H ∞ and H 2 Optimization of Dynamic Vibration Absorbers Attached to Damped Linear Systems

Toshihiko Asami, Osamu Nishihara, Amr M. Baz
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Technical Papers
J. Vib. Acoust. April 2002, 124(2): 284–295.
https://doi.org/10.1115/1.1456458
Published Online: March 26, 2002
View Article titled, Analytical Solutions to H ∞ and H 2 Optimization of Dynamic Vibration Absorbers Attached to Damped Linear Systems
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Topics: Damping, Optimization, Approximation, Vibration absorbers, Excitation systems
Journal Articles

Analytical and Experimental Evaluation of an Air Damped Dynamic Vibration Absorber: Design Optimizations of the Three-Element Type Model

Toshihiko Asami, Osamu Nishihara
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research Papers
J. Vib. Acoust. July 1999, 121(3): 334–342.
https://doi.org/10.1115/1.2893985
Published Online: July 1, 1999
View Article titled, Analytical and Experimental Evaluation of an Air Damped Dynamic Vibration Absorber: Design Optimizations of the Three-Element Type Model
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Topics: Design, Vibration absorbers, Dampers, Pistons, Springs, Cylinders, Damping, Shock absorbers