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Proceedings Papers

Elasto-Plastic Modeling of Beams for Impedance Based Structural Health Monitoring

Naserodin Sepehry, Firooz Bakhtiari-Nejad, Weidong Zhu
Proc. ASME. IMECE2018, Volume 11: Acoustics, Vibration, and Phononics, V011T01A004, November 9–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2018-87910
https://doi.org/10.1115/IMECE2018-87910
View Paper titled, Elasto-Plastic Modeling of Beams for Impedance Based Structural Health Monitoring
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Topics: Modeling, Structural health monitoring, Finite difference methods, Frequency response, Linear systems, Sensors, Actuators, Fourier transforms, Nonlinear equations, Nonlinear systems
Proceedings Papers

Nonlinear Vibration Analysis of a Fractional Viscoelastic Euler-Bernoulli Microbeam

Firooz Bakhtiari-Nejad, Ehsan Loghman, Mostafa Pirasteh
Proc. ASME. IMECE2018, Volume 11: Acoustics, Vibration, and Phononics, V011T01A017, November 9–15, 2018
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2018-87061
https://doi.org/10.1115/IMECE2018-87061
View Paper titled, Nonlinear Vibration Analysis of a Fractional Viscoelastic Euler-Bernoulli Microbeam
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Topics: Microbeams, Nonlinear vibration, Resonance, Differential equations, Excitation, Frequency response, Galerkin method, Partial differential equations, Strain gradient
Proceedings Papers

Vibrational Analysis of Human Femur Bone

Reza Sadeghi, Firooz Bakhtiari-Nejad, Taha Goudarzi
Proc. ASME. IDETC-CIE2018, Volume 8: 30th Conference on Mechanical Vibration and Noise, V008T10A045, August 26–29, 2018
Publisher: American Society of Mechanical Engineers
Paper No: DETC2018-85114
https://doi.org/10.1115/DETC2018-85114
View Paper titled, Vibrational Analysis of Human Femur Bone
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Topics: Bone, Density, Elastic moduli, Finite element methods, Geometry, Knee, Mechanical properties, Mode shapes, Muscle, Sports
Proceedings Papers

Scaled Boundary Finite Element Method for Modeling of Impedance Based Structural Health Monitoring of 2D Structure

Naserodin Sepehry, Firooz Bakhtiari-Nejad, Weidong Zhu
Proc. ASME. IDETC-CIE2018, Volume 8: 30th Conference on Mechanical Vibration and Noise, V008T10A034, August 26–29, 2018
Publisher: American Society of Mechanical Engineers
Paper No: DETC2018-85126
https://doi.org/10.1115/DETC2018-85126
View Paper titled, Scaled Boundary Finite Element Method for Modeling of Impedance Based Structural Health Monitoring of 2D Structure
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Topics: Finite element methods, Modeling, Structural health monitoring, Boundary element methods, Damage, Degrees of freedom, Piezoelectric materials, Simulation, Stiffness
Proceedings Papers

Nonlinear Modeling of Cracked Beams for Impedance Based Structural Health Monitoring

Naserodin Sepehry, Firooz Bakhtiari-Nejad, Mahnaz Shamshirsaz, Weidong Zhu
Proc. ASME. IMECE2017, Volume 4B: Dynamics, Vibration, and Control, V04BT05A034, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-70808
https://doi.org/10.1115/IMECE2017-70808
View Paper titled, Nonlinear Modeling of Cracked Beams for Impedance Based Structural Health Monitoring
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Topics: Modeling, Structural health monitoring, Fracture (Materials), Frequency response, Linear systems, Actuators, Damage, Differential equations, Nonlinear equations, Nonlinear systems
Proceedings Papers

Sensitivity Analysis of a Flexible Marine Riser Using Sobol’s Method

Firooz Bakhtiari-Nejad, Arastou Azimi, Robert G. Parker
Proc. ASME. IMECE2017, Volume 4B: Dynamics, Vibration, and Control, V04BT05A066, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-72502
https://doi.org/10.1115/IMECE2017-72502
View Paper titled, Sensitivity Analysis of a Flexible Marine Riser Using Sobol’s Method
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Topics: Marine drilling risers, Sensitivity analysis, Pipeline risers, Risers (Casting), Tension, Damage, Displacement, Distributed parameter systems, Dynamic response, Engineering simulation
Proceedings Papers

Dynamic Modeling and Control of a Throttle Valve in Spark Ignition Internal Combustion Engines

Firooz Bakhtiari-Nejad, Mirkamal Seyyedrasuly, Mostafa Mirsalim
Proc. ASME. IMECE2017, Volume 4A: Dynamics, Vibration, and Control, V04AT05A036, November 3–9, 2017
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2017-72530
https://doi.org/10.1115/IMECE2017-72530
View Paper titled, Dynamic Modeling and Control of a Throttle Valve in Spark Ignition Internal Combustion Engines
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Topics: Dynamic modeling, Ignition, Internal combustion engines, Valves, Engines, Adaptive control, Automotive engineering, Dynamic models, Errors, Spark-ignition engine
Journal Articles

A New Dynamic Model of Coupled Axial–Torsional Vibration of a Drill String for Investigation on the Length Increment Effect on Stick–Slip Instability

Ali Hosseinzadeh, Firooz Bakhtiari-Nejad
Journal: Journal of Vibration and Acoustics
Publisher: ASME
Article Type: Research-Article
J. Vib. Acoust. December 2017, 139(6): 061016.
Paper No: VIB-16-1311
https://doi.org/10.1115/1.4037299
Published Online: August 17, 2017
View Articletitled, A New Dynamic Model of Coupled Axial–Torsional Vibration of a Drill String for Investigation on the Length Increment Effect on Stick–Slip Instability
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Topics: Drill strings, Drilling, Stability, Vibration, Steady state, Stick-slip
Proceedings Papers

Optimization of Joined Conical Shells Based on Free Vibration

Rayehe Karimi Mahabadi, Firooz Bakhtiari-Nejad
Proc. ASME. IMECE2016, Volume 4B: Dynamics, Vibration, and Control, V04BT05A070, November 11–17, 2016
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2016-65612
https://doi.org/10.1115/IMECE2016-65612
View Paper titled, Optimization of Joined Conical Shells Based on Free Vibration
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Topics: Free vibrations, Optimization, Shells, Fibers, Composite materials, Design, Genetic algorithms
Proceedings Papers

Polynomial Chaos Expansion Sensitivity Analysis for Electromechanical Impedance of Plate

Firooz Bakhtiari-Nejad, Naserodin Sepehry, Mahnaz Shamshirsaz
Proc. ASME. IDETC-CIE2016, Volume 8: 28th Conference on Mechanical Vibration and Noise, V008T10A037, August 21–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DETC2016-59129
https://doi.org/10.1115/DETC2016-59129
View Paper titled, Polynomial Chaos Expansion Sensitivity Analysis for Electromechanical Impedance of Plate
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Topics: Chaos, Polynomials, Sensitivity analysis, Modeling, Plates (structures), Uncertainty, Damage, Degrees of freedom, Finite element methods, Semiconductor wafers
Proceedings Papers

An Investigation on Resonant Characteristics of Micro/Nano-Beams Based on Nonlocal Elasticity Theory

Firooz Bakhtiari-Nejad, Mostafa Nazemizadeh
Proc. ASME. IDETC-CIE2016, Volume 4: 21st Design for Manufacturing and the Life Cycle Conference; 10th International Conference on Micro- and Nanosystems, V004T08A012, August 21–24, 2016
Publisher: American Society of Mechanical Engineers
Paper No: DETC2016-60458
https://doi.org/10.1115/DETC2016-60458
View Paper titled, An Investigation on Resonant Characteristics of Micro/Nano-Beams Based on Nonlocal Elasticity Theory
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Topics: Elasticity, Resonance, Q-factor, Vibration, Damping, String
Proceedings Papers

Free Vibration Analysis of FG Skew Plates Based on Second Order Shear Deformation Theory

Firooz Bakhtiari-Nejad, Mahnaz Shamshirsaz, Mohammad Mohammadzadeh, Sasan Samie
Proc. ASME. IDETC-CIE2014, Volume 8: 26th Conference on Mechanical Vibration and Noise, V008T11A024, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-34085
https://doi.org/10.1115/DETC2014-34085
View Paper titled, Free Vibration Analysis of FG Skew Plates Based on Second Order Shear Deformation Theory
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Topics: Free vibrations, Plates (structures), Shear deformation, Partial differential equations, Boundary-value problems, Differential equations, Functionally graded materials, Plate theory, Simulation results
Proceedings Papers

Vibration Analysis and Control of a Bridge Under Vehicular Random Excitation

Firooz Bakhtiari-Nejad, Seyyed Mahdi Ostad Hosseyni, Mahnaz Shamshirsaz, Mahsan Bakhtiarinejad
Proc. ASME. IDETC-CIE2014, Volume 8: 26th Conference on Mechanical Vibration and Noise, V008T11A087, August 17–20, 2014
Publisher: American Society of Mechanical Engineers
Paper No: DETC2014-34398
https://doi.org/10.1115/DETC2014-34398
View Paper titled, Vibration Analysis and Control of a Bridge Under Vehicular Random Excitation
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Topics: Bridges (Structures), Random excitation, Vibration analysis, Vehicles, Chaos, Deflection, Vibration, Actuators, Algorithms, Artificial neural networks
Proceedings Papers

Regulator and Tracking System Design for a Single-Rod Hydraulic Actuator via Pole-Placement Approach

Hamed Moradi, Kambiz Haji Hajikolaei, Firooz Bakhtiari-Nejad
Proc. ASME. IMECE2011, Volume 7: Dynamic Systems and Control; Mechatronics and Intelligent Machines, Parts A and B, 173-181, November 11–17, 2011
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2011-62852
https://doi.org/10.1115/IMECE2011-62852
View Paper titled, Regulator and Tracking System Design for a Single-Rod Hydraulic Actuator via Pole-Placement Approach
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Topics: Actuators, Design, Pole placement
Proceedings Papers

Application of Robust H ∞ Technique to Control Water Level of Boiler Drum in the Presence of Parametric Uncertainties

Hamed Moradi, Majid Saffar-Avval, Firooz Bakhtiari-Nejad
Proc. ASME. IMECE2010, Volume 8: Dynamic Systems and Control, Parts A and B, 61-67, November 12–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: IMECE2010-38064
https://doi.org/10.1115/IMECE2010-38064
View Paper titled, Application of Robust H ∞ Technique to Control Water Level of Boiler Drum in the Presence of Parametric Uncertainties
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Topics: Boilers, Uncertainty, Water
Proceedings Papers

Multivariable Control of an Over-Head Crane System Based on Entire Eigen-Structure Assignment

Hamed Moradi, K. Haji Hajikolaei, Firooz Bakhtiari-Nejad, Aria Alasty
Proc. ASME. IDETC-CIE2010, Volume 2: 34th Annual Mechanisms and Robotics Conference, Parts A and B, 1491-1498, August 15–18, 2010
Publisher: American Society of Mechanical Engineers
Paper No: DETC2010-28246
https://doi.org/10.1115/DETC2010-28246
View Paper titled, Multivariable Control of an Over-Head Crane System Based on Entire Eigen-Structure Assignment
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Topics: Cables, Cranes
Proceedings Papers

Using Sliding Mode Control to Adjust Drum Level of a Boiler Unit With Time Varying Parameters

Hamed Moradi, Firooz Bakhtiari-Nejad, Majid Saffar-Avval, Aria Alasty
Proc. ASME. ESDA2010, ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 5, 29-33, July 12–14, 2010
Publisher: American Society of Mechanical Engineers
Paper No: ESDA2010-24105
https://doi.org/10.1115/ESDA2010-24105
View Paper titled, Using Sliding Mode Control to Adjust Drum Level of a Boiler Unit With Time Varying Parameters
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Topics: Boilers, Sliding mode control, Water
Proceedings Papers

Application of a Robust Minimum-Order Observer to Control the Performance of an Uncertain Multivariable Boiler Unit

Hamed Moradi, Firooz Bakhtiari-Nejad
Proc. ASME. ESDA2010, ASME 2010 10th Biennial Conference on Engineering Systems Design and Analysis, Volume 5, 21-27, July 12–14, 2010
Publisher: American Society of Mechanical Engineers
Paper No: ESDA2010-24103
https://doi.org/10.1115/ESDA2010-24103
View Paper titled, Application of a Robust Minimum-Order Observer to Control the Performance of an Uncertain Multivariable Boiler Unit
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Topics: Boilers, Uncertainty
Proceedings Papers

Nonlinear Oscillation and Stability Analysis of the Turning Process With a Worn Tool

Hamed Moradi, Mohammad T. Ahmadian, Firooz Bakhtiari-Nejad
Proc. ASME. IDETC-CIE2009, Volume 1: 22nd Biennial Conference on Mechanical Vibration and Noise, Parts A and B, 927-934, August 30–September 2, 2009
Publisher: American Society of Mechanical Engineers
Paper No: DETC2009-86250
https://doi.org/10.1115/DETC2009-86250
View Paper titled, Nonlinear Oscillation and Stability Analysis of the Turning Process With a Worn Tool
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Topics: Chatter, Oscillations, Stability, Turning, Wear, Resonance, Bifurcation, Dynamic systems, Excitation, Finishes
Proceedings Papers

Robust H-Infinity Control of an Over-Head Crane System With Parametric Uncertainties

Hamed Moradi, K. Haji Hajikolaei, Firooz Bakhtiari-Nejad
Proc. ASME. IDETC-CIE2009, Volume 7: 33rd Mechanisms and Robotics Conference, Parts A and B, 377-383, August 30–September 2, 2009
Publisher: American Society of Mechanical Engineers
Paper No: DETC2009-86359
https://doi.org/10.1115/DETC2009-86359
View Paper titled, Robust H-Infinity Control of an Over-Head Crane System With Parametric Uncertainties
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Topics: Cranes, Uncertainty