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Yohannes Ketema
Contract Associate
Professor
- Contact Information
- Dr. Ketema’s research focuses broadly in the area of dynamics. He has done work in the dynamics of active materials such as shape memory alloys and studied their possible use for the purpose of vibration damping and control. Professor Ketema has also done research in the dynamics and stability of formations, and more recently in orbital mechanics where he has studied the relative motion of satellites in elliptic orbits.
Degrees
Master of Science: Royal Institute of Technology, Stockholm, Sweden, 1987
Licentiate of Engineering: Royal Institute of Technology, Stockholm, Sweden, 1989
Ph.D: Royal Institute of Technology, Stockholm, Sweden, 1993Experience
- 2003-2004: Director of Undergraduate Studies
- 2003-Present: Contract Associate Professor
- Dr. Ketema’s research focuses broadly in the area of dynamics. He has done work in the dynamics of active materials such as shape memory alloys and studied their possible use for the purpose of vibration damping and control. Professor Ketema has also done research in the dynamics and stability of formations, and more recently in orbital mechanics where he has studied the relative motion of satellites in elliptic orbits.
- Aerospace Engineering and Mechanics University of Minnesota
- 1993-2003: Contract Assistant Professor
- Aerospace Engineering and Mechanics University of Minnesota
- 1986-1993: Teaching Assistant
- Royal Institute of Technology, Stockholm, Sweden
- 1993: Research Engineer
- Royal Institute of Technology, Stockholm, Sweden
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Five Recent Publications
- Ketema, Y., 2006, An Analytical Solution for Relative Motion with an Elliptic Reference Orbit, Journal of Astronautical Sciences, 53, 4, October-December, (Journal Article) More Details, Request PDF
- Ketema, Y., 2003, Approximate Model for a Viscoelastic Oscillator, Journal of Applied Mechanics, 70(5), 757-761, (Journal Article) More Details, Request PDF
- Ketema, Y., R. L. Fosdick and J. H. Yu, 1998, A nonlinear oscillator with history dependent forces, International Journal of Nonlinear Mechanics, 33, 447-459, (Journal Article) More Details, Request PDF
- Ketema, Y., 1998, Averaging and bifurcations in an oscillator with history dependent forces, Journal of Sound and Vibration, 209, 187-198, (Journal Article) More Details, Request PDF
- Ketema, Y., R. L. Fosdick, 1998, A thermoviscoelastic dynamic vibration absorber, Journal of Applied Mechanics, 65 (I), 17-24, (Journal Article) More Details
- See more publications
Honors and Fellowships
- 2005 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota Background
2002 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota
1999 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota- 1997 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota
- 1996 Outstanding Instructor Award, Institute of Technology Student Board, University of Minnesota
Current Courses
- Undergraduate
- AEM 2301 -- Mechanics of Flight | Course Home Page
- AEM 4601 -- Instrumentation Laboratory | Course Home Page
- Undergraduate
- AEM 2011 -- Statics
- AEM 2012 -- Dynamics
- AEM 2021 -- Statics and Dynamics
- AEM 2301 -- Mechanics of Flight
- AEM 3031 -- Deformable Body Mechanics
- AEM 4301 -- Orbital Mechanics
- AEM 4601 -- Instrumentation Laboratory
- Graduate
- AEM 5401 -- Intermediate Dynamics
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Subject and Courses Taught
Last Modified: Tuesday, 24-Jul-2007 14:55:48 CDT -- this is in International Standard Date and Time Notation