AN ASSESSMENT OF THE EFFECTIVENESS OF A VISCOELASTIC DAMPER ON THE FORCED VIBRATIONS OF A STRETCHED STRING.
Abstract
The behavior of a dynamic damper in a simple structural environment is studied. The structural model used is a stretched string under harmonic loading at the ends. The aim of the analysis is to establish conditions under which maximum damping is obtainable. The unsymmetrical modes are undamped and the analysis is concerned only with the damping of the symmetrical modes. An optimum ratio of damper stiffness to structure stiffness at the point of application of the damper is found to exist, for which the damping ratio is a maximum. For dampers much stiffer than this optimum, the antinodal point at which the damper is placed becomes more and more constrained and eventaully becomes fixed i.e. a nodal point.
Document Details
- Document Type
- Technical Report
- Publication Date
- Oct 01, 1964
- Accession Number
- AD0608383
Entities
People
- D. I. G. Jones
Organizations
- Air Force Research Laboratory