Dynamics of Non-viscously Damped Distributed Parameter Systems

Adhikari, S., Y. Lei and M. I. Friswell,
46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics & Materials Conference, Austin, Texas, USA, April 2005.

Linear dynamics of Euler-Bernoulli beams with non-viscous non-local damping is considered. It is assumed that the damping force at a given point in the beam depends on the past history of velocities at different points via convolution integrals over exponentially decaying kernel functions. Conventional viscous and viscoelastic damping models can be obtained as special cases of this general damping model. The equation of motion of the beam with such general damping model results in a linear partial integro-differential equation. Exact closed-form expressions of the natural frequencies and mode-shapes of the beam are derived. The analytical method is capable of handling complex boundary conditions. Numerical examples are provided to illustrate the new results.

BiBTeX Entry
@INPROCEEDINGS{cp14,
    AUTHOR={S. Adhikari and Y. Lei and M. I. Friswell},
    TITLE={Dynamics of non-viscously damped distributed parameter systems},
    BOOKTITLE={46th AIAA/ASME/ASCE/AHS/ASC Structures, Structural Dynamics \& Materials Conference},
    YEAR={2005},
    Address={Austin, Texas, USA},
    Month={April},
    Note={}
}
by Sondipon Adhikari