The Structural Engineer > Archive > Volume 57 (1979) > Issues > Issue 3 > A Passive Damping Device for Structures in Low-frequency Oscillation
Name of File 3894-57-03.pdf cached at 14/12/2017 17:06:47 - with 4 pages. pdfPath: E:\\CMS\webtest\files\e2\e2e683de-9483-44a1-83aa-c474309d103f.pdf. thumbPath: E:\\CMS\webtest\files\pdfthumbs\e2e683de-9483-44a1-83aa-c474309d103f_1.png. objDoc: 1 - True. objPreview.Log: . strFileName: e2e683de-9483-44a1-83aa-c474309d103f_1.png

Members/subscribers must be logged in to view this article

A Passive Damping Device for Structures in Low-frequency Oscillation

Oscillation of a structure induced by vortex excitation is likely to occur at frequencies quite different from the natural frequency of the structure because of the locking-in phenomenon. Effective damping by means of a passive mechanical system requires that the system be capable of operating over a large range of forcing frequencies under the exciting forces which may vary in direction and intensity. A damping device based on the principle of energy dissipation by impact has been developed for this purpose. It has a nonlinear response to displacements, and is suitable for operation at relatively low frequencies. Selected experimental results are presented in this paper. H.Y. Wong