MEMSDUKEPRATT School of engineering

Deman Tang
  • Office Location: 230 Hudson Hall
  • Office Phone: (919) 660-5332
  • Email Address: demant@duke.edu

    • Dr. Tang's research interests include:

    • Linear and Nonlinear Structural Dynamics, Unsteady Aerodynamics and Fluid/Structure
      Interaction.
    • Experimental Modal Analysis and Wind Tunnel Experimental Technique.
    • Noise and Vibration Control.
    • Nonlinear Aeroelasticity of Aircraft and Rotorcraft.
    • Molecular Dynamics and Reduced Order Model Analysis.

    Here are six short videos showing experimental aeroelastic models undergoing limit cycle oscillations in the Duke wind tunnel.

    1. An airfoil with a nonlinear freeplay in the connection from the main airfoil to the trailing edge control surface.
    2. A delta wing with a strong structural nonlinearity as a result of tension in the mid-plane of the plate-like wing induced by bending of the wing out of its initially undeformed plane.
    3. A very high aspect ratio wing that behaves as a beam with double bending (both transverse to and in-line with the aerodynamic flow field) and twisting. A nonlinear coupling among double bending and twisting occurs. Also the aerodynamic flow field experiences separation due to the large motions involved.
    4. A delta wing with an external store, flutter and limit cycle oscillations.
    5. LCO and Flutter of WingStore model
    6. Flapping Flag Flutter

    Specialties
    Nonlinear Dynamics
    Aerodynamics

    Recent Publications More Publications

    1. Tang, Deman and Attar, Peter and Li, Aiqin and Dowell, Earl H., Complex dynamics of a pyranose ring structure molecule attached to an atomic force microscope, Nonlinear Dynamics, vol. 45 no. 3-4 (2006), ppt. 283 - 303 , [s11071-006-0508-9] [abs]
    2. Tang, Deman and Dowell, Earl H., Flutter and limit-cycle oscillations for a wing-store model with freeplay, Journal of Aircraft, vol. 43 no. 2 (2006), ppt. 487 - 503 [abs]
    3. Tang, Deman and Dowell, Earl H., Aerodynamic flow control of an airfoil with small trailing-edge strips, Journal of Aircraft, vol. 43 no. 6 (2006), ppt. 1854 - 1866 , [1.18969] [abs]
    4. Tang, Deman and Dowell, Earl H., Experimental and theoretical study of gust response for a wing-store model with freeplay, Journal of Sound and Vibration, vol. 295 no. 3-5 (2006), ppt. 659 - 684 , [024] [abs]
    5. Tang, Deman and Attar, Peter and Dowell, Earl H., Flutter/limit cycle oscillation analysis and experiment for wing-store model, AIAA Journal, vol. 44 no. 7 (2006), ppt. 1662 - 1675 [abs]

    The mission of Duke's Mechanical Engineering and Materials Science educational programs is to provide the knowledge, skills, and credentials needed to be successful in the practice of engineering; the preparation necessary to undertake professional registration; an educational preparation for graduate or professional study; and an education background that is the basis for professional growth and leadership throughout a career that may encompass a broad range of endeavors, both technical and non-technical.