Professor Reza Nakhaie Jazar
Professor
Details
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College: School of Engineering
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Department: School of Engineering
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Campus: Bundoora East Australia
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reza.nakahiejazar@rmit.edu.au
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ORCID: 0000-0003-2534-980X
Open to
- Masters Research or PhD student supervision
About
Professor Reza Jazar is the Discipline Head of Mechanical and Automotive Engineering and responsible for providing leadership and management of the teaching and research programs in the discipline.
Professor Jazar has several years of practical industrial experience mostly in vehicle manufacturing and automotive industries all around the world.
Professor Jazar is an active member of many Journals, Publishers, Conferences, and Organizations as an editor, reviewer, or organizer. He is the Editor in Chief of his new established journal: Journal of Nonlinear Engineering.
Professor Jazar has authored or coauthored over 200 publications including books, journal articles, monographs, and conference papers.
Scientific contribution
The following contributions and studies are some of Professor Jazar’s innovative and new applied methods that are currently academic or industry standard.
Razi Acceleration and Correction of Coriolis Acceleration. Professor Jazar developed the theory of derivative in relatively moving frames. The theory has shown a new acceleration term (Razi acceleration) and splitting the coriolis acceleration in two different terms when there are three coordinate frames are involved.
Theory of Order Free Transformations. Professor Jazar developed the order free transformation theory. It redefines the transformation matrices of connected multibodies such that the order of matrix multiplication in kinematic analysis of the system is immaterial. Therefore, the actuators in a manipulator are free to be actuated in any arbitrary order.
Autodriver Algorithm. Professor Jazar presented a method for smart autonomous vehicles to eliminate the need of steering by drivers in well-defined roads. Employing the GPS and using four-wheel-steering system we may eliminate steering by driver and keep the vehicle on the road during long-range travels.
Caster Theory in design of Smart Vehicles. Introducing the screw theory, Professor Jazar has presented the required equations to calculate the camber angle based on caster and lean angles of a steerable wheel as a function of steer angle. So, we are able to design a smart vehicle to control the lateral force by varying the caster angle, independent of the input steer angle by the driver. The method can be used to increase safety of street cars, and maximize the cornering response of sport cars.
Mathematical Modeling of Squeeze-Film and Thermal Damping in MEMS. Professor Jazar is one of the first investigators who could introduce the mathematical model of the thermal effects and squeeze-film effects in micro-resonators. Employing the Lorentzian function, I modeled the thermal effects as Temperature Relaxation, and Thermal Damping. The model of squeeze-film effects are presented by a Fifth Degree Stiffness and Third Degree Damping.
Development of RMS Optimization Method. Professor Jazar (with contribution of Prof. Golnaraghi, U. Simon Fraser, Canada) have introduced the RMS Optimization method to optimize the behavior of vibration isolators. The RMS Optimization method is based on minimization of the Root Mean Square (RMS) of absolute acceleration versus RMS of relative displacement.
Mathematical Model of Hydraulic Mounts. Although the hydraulic engine mounts have been introduced as an effective vibration isolator since 1980, their behavior has not been described mathematically before 2001 when I (with contribution of Prof. Golnaraghi, U. Simon Fraser, Canada) provided an applied mathematical model to describe the nonlinear behavior of the decoupler. Employing the model, we successfully determined the frequency response of HEMs.
Piecewise Functional Vibration Isolator. Professor Jazar (and Prof. Golnaraghi, U. Simon Fraser, Canada) are the first who could derive a mathematical model to describe the frequency response of piecewise linear vibration isolators, using a modified averaging method. The model uncovered several hidden and confusing behavior of piecewise functional systems, such as jump avoidance condition and frequency island.
Dynamic Systems with Saturating Elements. To model the new industrial vibration devices such as magneto rheological dampers, Professor Jazar introduced an efficient mathematical model to describe the frequency response of systems with saturating elements.
Floating-Time Method. Professor Jazar has introduced, developed, and applied Floating-Time method to solve minimum-time-control problems of nonlinear and multiple degrees-of-freedom dynamic systems subject to bounded inputs. This method has been added to the arsenal of existing approximate and numerical methods that have been developed over the last fifty years for optimization based control and open control platforms. A novel feature of the Floating-Time method is that it supports any constraints on dynamical states, including space, velocity, acceleration, and jerk limitations.
Energy-Rate Method. Professor Jazar has introduced and applied an effective method known as the Energy-Rate method to develop the stability map of parametric systems.
Industry Experience:
Reviewer-
Journal of Acoustics and Vibrations: ASME Transaction
Journal of Applied Acoustics,
Journal of Biomechanics,
Journal of Communications in Nonlinear Science and Numerical Simulation,
Journal of Composite Materials,
Journal of Dynamic Systems, Measurement and Control: ASME Transaction
Journal of Intelligent Material Systems and Structures,
Journal of Mechanical Engineering Science,
Journal of Mechatronics: IEEE/ASME Transactions
Journal of Nonlinear Dynamics,
Journal of Shock and Vibration Digest,
Journal of Trends in Applied Sciences Research,
Journal of Vibration and Control,
Journal of Computers and Mathematics with Application
IMechE, Proceedings of the Institution of Mechanical Engineers, Part C, Journal of Mechanical Engineering Science,
IMechE, Proceedings of the Institution of Mechanical Engineers, Part D, Journal of Automobile Engineering,
IMechE, Proceedings of the Institution of Mechanical Engineers, Part K, Journal of Multi-Body Dynamic Systems,
International Journal of Non-Linear Mechanics,
International Journal of Sciatica, Academic Journals Inc.
International Journal of Modeling and Simulation,
International Journal of Computer-Integrated Design and Construction (CIDAC),
Transaction Canadian Society for Mechanical Engineering,
Natural Sciences and Engineering Research Council of Canada (NSERC)
McGraw Hill Book Co. (Mechanics of Machinery, Dynamics)
Prentice Hall Publication. (Dynamics)
Springer Publication. (Vibrations, MEMS, Piezoelectric Sensors)
Wiley Publication. (Mechanism, Machinery, and Robotics)
World Scientific. (Nonlinear Dynamics)
Review of Scientific Instruments
Professor Jazar has several years of practical industrial experience mostly in vehicle manufacturing and automotive industries all around the world.
Professor Jazar is an active member of many Journals, Publishers, Conferences, and Organizations as an editor, reviewer, or organizer. He is the Editor in Chief of his new established journal: Journal of Nonlinear Engineering.
Professor Jazar has authored or coauthored over 200 publications including books, journal articles, monographs, and conference papers.
Scientific contribution
The following contributions and studies are some of Professor Jazar’s innovative and new applied methods that are currently academic or industry standard.
Razi Acceleration and Correction of Coriolis Acceleration. Professor Jazar developed the theory of derivative in relatively moving frames. The theory has shown a new acceleration term (Razi acceleration) and splitting the coriolis acceleration in two different terms when there are three coordinate frames are involved.
Theory of Order Free Transformations. Professor Jazar developed the order free transformation theory. It redefines the transformation matrices of connected multibodies such that the order of matrix multiplication in kinematic analysis of the system is immaterial. Therefore, the actuators in a manipulator are free to be actuated in any arbitrary order.
Autodriver Algorithm. Professor Jazar presented a method for smart autonomous vehicles to eliminate the need of steering by drivers in well-defined roads. Employing the GPS and using four-wheel-steering system we may eliminate steering by driver and keep the vehicle on the road during long-range travels.
Caster Theory in design of Smart Vehicles. Introducing the screw theory, Professor Jazar has presented the required equations to calculate the camber angle based on caster and lean angles of a steerable wheel as a function of steer angle. So, we are able to design a smart vehicle to control the lateral force by varying the caster angle, independent of the input steer angle by the driver. The method can be used to increase safety of street cars, and maximize the cornering response of sport cars.
Mathematical Modeling of Squeeze-Film and Thermal Damping in MEMS. Professor Jazar is one of the first investigators who could introduce the mathematical model of the thermal effects and squeeze-film effects in micro-resonators. Employing the Lorentzian function, I modeled the thermal effects as Temperature Relaxation, and Thermal Damping. The model of squeeze-film effects are presented by a Fifth Degree Stiffness and Third Degree Damping.
Development of RMS Optimization Method. Professor Jazar (with contribution of Prof. Golnaraghi, U. Simon Fraser, Canada) have introduced the RMS Optimization method to optimize the behavior of vibration isolators. The RMS Optimization method is based on minimization of the Root Mean Square (RMS) of absolute acceleration versus RMS of relative displacement.
Mathematical Model of Hydraulic Mounts. Although the hydraulic engine mounts have been introduced as an effective vibration isolator since 1980, their behavior has not been described mathematically before 2001 when I (with contribution of Prof. Golnaraghi, U. Simon Fraser, Canada) provided an applied mathematical model to describe the nonlinear behavior of the decoupler. Employing the model, we successfully determined the frequency response of HEMs.
Piecewise Functional Vibration Isolator. Professor Jazar (and Prof. Golnaraghi, U. Simon Fraser, Canada) are the first who could derive a mathematical model to describe the frequency response of piecewise linear vibration isolators, using a modified averaging method. The model uncovered several hidden and confusing behavior of piecewise functional systems, such as jump avoidance condition and frequency island.
Dynamic Systems with Saturating Elements. To model the new industrial vibration devices such as magneto rheological dampers, Professor Jazar introduced an efficient mathematical model to describe the frequency response of systems with saturating elements.
Floating-Time Method. Professor Jazar has introduced, developed, and applied Floating-Time method to solve minimum-time-control problems of nonlinear and multiple degrees-of-freedom dynamic systems subject to bounded inputs. This method has been added to the arsenal of existing approximate and numerical methods that have been developed over the last fifty years for optimization based control and open control platforms. A novel feature of the Floating-Time method is that it supports any constraints on dynamical states, including space, velocity, acceleration, and jerk limitations.
Energy-Rate Method. Professor Jazar has introduced and applied an effective method known as the Energy-Rate method to develop the stability map of parametric systems.
Industry Experience:
Reviewer-
Journal of Acoustics and Vibrations: ASME Transaction
Journal of Applied Acoustics,
Journal of Biomechanics,
Journal of Communications in Nonlinear Science and Numerical Simulation,
Journal of Composite Materials,
Journal of Dynamic Systems, Measurement and Control: ASME Transaction
Journal of Intelligent Material Systems and Structures,
Journal of Mechanical Engineering Science,
Journal of Mechatronics: IEEE/ASME Transactions
Journal of Nonlinear Dynamics,
Journal of Shock and Vibration Digest,
Journal of Trends in Applied Sciences Research,
Journal of Vibration and Control,
Journal of Computers and Mathematics with Application
IMechE, Proceedings of the Institution of Mechanical Engineers, Part C, Journal of Mechanical Engineering Science,
IMechE, Proceedings of the Institution of Mechanical Engineers, Part D, Journal of Automobile Engineering,
IMechE, Proceedings of the Institution of Mechanical Engineers, Part K, Journal of Multi-Body Dynamic Systems,
International Journal of Non-Linear Mechanics,
International Journal of Sciatica, Academic Journals Inc.
International Journal of Modeling and Simulation,
International Journal of Computer-Integrated Design and Construction (CIDAC),
Transaction Canadian Society for Mechanical Engineering,
Natural Sciences and Engineering Research Council of Canada (NSERC)
McGraw Hill Book Co. (Mechanics of Machinery, Dynamics)
Prentice Hall Publication. (Dynamics)
Springer Publication. (Vibrations, MEMS, Piezoelectric Sensors)
Wiley Publication. (Mechanism, Machinery, and Robotics)
World Scientific. (Nonlinear Dynamics)
Review of Scientific Instruments
Academic positions
- Professor and Discipline Head of Mechanical and Automotive Engineering, School of Aerospace, Mechanical and Manufacturing Engineering
- RMIT University
- Melbourne, Australia
- 2009 – Present
- Adjunct Professor, Department of Mechanical Engineering,
- Columbia University
- New York, United States
- 2007 – 2009
- Assistant Professor, Department of Mechanical Engineering
- North Dakota State University
- Fargo, United States
- 2001 – 2006
- Research Fellow, Department of Mechanical Engineering
- University of Waterloo
- Waterloo, Canada
- 2000 – 2001
- Research Fellow, Department of Mechanical Engineering,
- University of Calgary
- Calgary, Canada
- 1999 – 2000
- Lecturer, Department of Mechanical Engineering,
- University of Guilan
- Rasht, Iran
- 1993 – 1998
- Lecturer, Department of Mechanical Engineering,
- Tehran Polytechnic
- , Iran
- 1987 – 1992
Supervisor projects
- Enhancing Electric Vehicle Charging Infrastructure: A Machine Learning Approach for Forecasting Charging Demand and Analysing Charging Methods
- 21 Feb 2024
- Autonomous Optimal Vehicle Control: Limit Handling with Jerk Control
- 3 Jan 2023
- Dynamic Characterisation and Modelling of Biological Soft Tissue/Cell Systems
- 10 Dec 2022
- Evaluation of Renewable Intermittency on Electrolysers for Hydrogen Production Cost in Australia.
- 25 Nov 2022
- Development of energy prediction model for wind turbines using machine learning and artificial intelligence.
- 21 Nov 2022
- Trajectory Optimization Methodology for Active Safety Functions in Autonomous Driving
- 17 Mar 2022
- Increasing VRU Safety by Extended Environment Perception
- 9 Dec 2021
- 3D Printed Mycelium Composites
- 8 Oct 2021
- Development of a Fault-Tolerant Vehicle Dynamics Control for Crash-avoidance in Critical Scenarios
- 2 Aug 2021
- A Quasi-Steady-State Framework for the Control of Vehicles in Transient On-Limit Manoeuvres
- 15 Jun 2020
- Modelling, Control and Optimization of Vehicle Energy Management/Efficiency Systems
- 7 Jan 2020
- Acoustic Signal Based Fault Diagnosis Using Machine Learning
- 17 Oct 2019
- Learning-based Control System for Energy Management in Advanced Vehicles
- 29 Aug 2019
- Vibration Dynamics of Automotive Suspension Models with Tire-Road Separation
- 1 Jun 2018
- Intelligent Energy Management Control Systems for Autonomous Vehicles
- 11 May 2018
- Sustainable Water Desalination Using Direct Contact Membrane Distillation Utilising Heat from Salinity Gradient Solar Pond
- 1 Mar 2018
- Modelling, Analysis, and Control of Four-Wheel Independently Actuated Vehicles at Handling Limit
- 17 May 2017
- Optimization of Process Driven Dimensional Variations in Vehicle Body Using Genetic Algorithm and Finite Element Analysis
- 15 Mar 2017
- Thermal-mechanical response modelling and thermal damage prediction of soft tissues during thermal ablation
- 16 Feb 2017
- Influence of Different Seating and Crank Positions on Kinematics and Muscular Activity in Elite Handcycling - A Case Study
- 17 Jan 2017
- Influence of handhold rotation and pulling velocity on force and muscular activity during a therapeutic climbing exercise
- 11 Oct 2016
- Characterisation of the Driver Drowsiness Induced by Vibration
- 18 Jul 2016
- Hybrid Vehicles With Thermal Energy Recovery Systems
- 6 Feb 2015
- Small Scale Vertical Axis Wind Turbine for Power Generation in Built-up Areas
- 4 Mar 2013
- Minimum Roll Control of an Autonomous Vehicles
- 16 Jul 2012
Teaching interests
Dynamic Systems: Dynamics, Vibrations, Control, Stability, Bifurcations, and Chaotic behavior of Nonlinear Dynamic Systems.
Vehicles: Dynamics, Handling, Ride, Stability, Autonomous Vehicles.
MEMS: Dynamics, Design, Optimization, Control
Robotics and Multibody Systems: Kinematics, Dynamics, Optimal Control.
Vehicles: Dynamics, Handling, Ride, Stability, Autonomous Vehicles.
MEMS: Dynamics, Design, Optimization, Control
Robotics and Multibody Systems: Kinematics, Dynamics, Optimal Control.
Research interests
Mechanical Engineering, Automotive Engineering, Electrical and Electronic Engineering, Biomedical Engineering, Manufacturing Engineering, Classical Physics
Dynamic Systems: Dynamics, Vibrations, Control, Stability, Bifurcations, and Chaotic behavior of Nonlinear Dynamic Systems, with emphasis on Smart Vibration Isolators.
Vehicles: Dynamics, Handling, Ride, and Stability of Vehicles, with emphasis on Autonomous Vehicles and Smart/Safe Vehicles.
MEMS: Dynamics, Design, Optimization, Control, and Stability of Microelectromechanical Systems, with emphasis on Using Nonlinearity in Design.
Robotics: Kinematics, Dynamics, and Control of Robotic Manipulators, with emphasis on Time and Energy Optimal Control.
Dynamic Systems: Dynamics, Vibrations, Control, Stability, Bifurcations, and Chaotic behavior of Nonlinear Dynamic Systems, with emphasis on Smart Vibration Isolators.
Vehicles: Dynamics, Handling, Ride, and Stability of Vehicles, with emphasis on Autonomous Vehicles and Smart/Safe Vehicles.
MEMS: Dynamics, Design, Optimization, Control, and Stability of Microelectromechanical Systems, with emphasis on Using Nonlinearity in Design.
Robotics: Kinematics, Dynamics, and Control of Robotic Manipulators, with emphasis on Time and Energy Optimal Control.
