Department of Mechanical Engineering

Mehdi Ahmadian


Mehdi Ahmadian



Professor

Mechanical Engineering
123 Randolph
3103 Commerce
(540) 231-4920 (Randolph) (540) 231-1408 (Commerce St.)
(540) 231-9100 FAX
ahmadian@vt.edu


Education Research
Teaching
Experience
Honors
Publications

Education

Ph.D. SUNY Buffalo, NY 1984
M.S. SUNY Buffalo, NY 1982
B.S. SUNY Buffalo, NY 1980

 

Research

For more information, please go to the Center for Vehicle Systems and Safety web page.


Suspension Projects

  • Dynamic and Kinematics Analysis of Heavy Truck Suspensions

  • Design and Analysis of Controllable Seat Suspensions for Heavy Vehicles

  • Impact of Heavy Truck Suspensions on Road Damage

  • Adaptive Control Techniques for Semiactive Suspension Systems

  • Application of Magneto-Rheological Dampers for Controlling Gun Recoil in Various Class of Weapons

  • Application of Semiactive Suspensions for Intelligent Transportation Systems

Noise & Vibration Projects

  • Reducing Noise and Vibrations using Passive and Piezoelectric (Smart) Damping Materials in vehicles:

    • Cars

    • Highway Trucks

    • Locomotive Cabs

    • Tractor Cabs

Dynamics Projects

  • Ride Evaluation of Heavy Vehicles

    • Field Testing

    • Laboratory Testing

    • Modeling

  • Vehicle Stability (rollover) Analysis

  • Dynamic Analysis of Tires

  • Derailment Analysis of Rail Vehicles


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Teaching Activities

ME 4504 Dynamic Systems - Controls Engineering I

Fundamentals of feedback control theory, classical analysis and design techniques for automatic controls, introduction to modern control theory. Pre: 3504. (3H,3C). I.

ME 4015-4016 Engineering Design and Project

Techniques for defining and solving open ended problems in mechanical engineering including problem definition, ideation, optimization, decision making, and oral and written communication of solutions. Engineering case studies includes technical ethical decisions. Design projects involve computer aided engineering. One semester design project with students working in teams. All required courses through junior year. 4015: (2H,3L,3C); 4016: (2H,2C). 4015: I; 4016: II.

ME 4534 Land Vehicle Dynamics

Analytical methods for land vehicle dynamics. Mechanics of pneumatic tires on paved roads. Vehicle stability, handling, and responce to random guideway and roadway irregularities, ride quality computaion methods and standards, suspension designs. (Pre: 3504, 4504, 3H, 3Cr)


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Experience

Professor Dept. of Mechanical Engineering
Virginia Tech
Blacksburg, VA		 Aug. 2001 - Present
Associate Professor

 Dept. of Mechanical Engineering
Virginia Tech
Blacksburg, VA		 Aug. 1998 – Aug. 2001
Assistant Professor

 Dept. of Mechanical Engineering
Virginia Tech
Blacksburg, VA		 May 1995 – Aug. 1998
Founding Director
 Dept. of Mechanical Engineering
Virginia Tech
Advanced Vehicle Dynamics Laboratory		 Aug. 1995 –
Jan. 2005
Founding Director Dept. of Mechanical Engineering
Virginia Tech
Center for Vehicle Systems & Safety		 Jan. 2005 - Present
Founding Director Dept. of Mechanical Engineering
Virginia Tech
Railway Technologies Laboratory		 Aug. 2004 – Present
Founding Director Dept. of Mechanical Engineering
Virginia Tech
Virginia Institute for Performance Engineering and Research		 Jan.y 2004 – Present

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Honors

No honors listed.

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Publications

Conference Papers

  • Ahmadian, M. and Mohan, A., “Semiactive Control of Hunting Stability in Rail Vehicles” Proceedings of ASME International Mechanical Engineering Congress and Exposition, Orlando, FL, November 5 – 11, 2005.
  • Ahmadian, M. and Mohan, A., “Dynamics Analysis of Self-Steering Railway Trucks for Assessing Curving Performance,” Proceedings of ASME International Mechanical Engineering Congress and Exposition, Orlando, FL, November 5 – 11, 2005.
  • Ahmadian, M. and Dillard, D., “A Preliminary Evaluation and Analysis of Technologies for Eliminating Insulated Joints,” Proceedings of ASME International Mechanical Engineering Congress and Exposition, Orlando, FL, November 5 – 11, 2005.
  • Song, X., Ahmadian, M., Southward, S.C., and Miller, L., “Superharmonic-Free Adaptive Semiactive Magneto-Rheological Suspension”, Proceedings of ASME International Mechanical Engineering Congress and Exposition, Orlando, FL, November 5 – 11, 2005.
  • Ahmadian, M., “Semiactive Fuzzy Logic Control for Heavy Truck Primary Suspensions: Is It Effective?” Proceedings of the Society of Automotive Engineers Commercial Vehicle Engineering Congress & Exhibition, Chicago, Illinois, November 1 – 3, 2005.
  • Ahmadian, M., “The Challenge of Designing a Semiactive Damper for Heavy Truck Seat Suspensions,” Proceedings of the Society of Automotive Engineers Commercial Vehicle Engineering Congress & Exhibition, Chicago, Illinois, November 1 – 3, 2005.

Patents

  • "Electromagnetically Operated Pneumatic Valve Assembly for an Electrical Contactor Actuator," U.S. Patent 5409036, April 25, 1995.
  • "Inter-axially Connected Steerable Locomotive Trucks," Patent application filed, pending.
  • "Resilient Traction Links for Steerable Locomotive Trucks," Patent application filed, pending.
  • "Independent Yaw Stiffener Element for Steerable Trucks," Patent application filed, pending.
  • "Inter-motor Links for Steerable Locomotive Bogies," Patent application filed, pending.
  • "Assembly Procedure of a Steerable Truck for Locomotives," Patent application filed, pending.
  • "Journal Bearing Housing for Locomotives," Patent application filed, pending.
  • "Resiliently Mounted Sanding Brackets for Locomotives," Patent application filing in Review.



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