THE DYNAMIC RESPONSE OF DISCRETELY DAMPED STRUCTURES UNDER HARMONIC AND RANDOM EXCITATION

One of the ways to minimise the excitation of structure under dynamic load is to include viscous dampers both within the structure and connected to points of support outside the structure. However, the magnitude of the damping required and the position of the dampers is not always easily determined. For multi-degree of freedom structures, some modes may not be damped whilst others may be excessively damped. Excessive damping of one mode may also precipitate other modes of vibration. This paper describes an analysis based on the frequency response method for studying the dynamic response of framed structures under both harmonic and random excitation. Studies of a multi-storey frame structure and a cable stayed pedestrian footbridge are described. These studies include investigations of the location and magnitude of the dampers. (Author/TRRL)

  • Corporate Authors:

    University of Sydney

    School of Civil and Mining Engineering, Parramatta Road
    Sydney, New South Wales 2006,   Australia 
  • Authors:
    • WHEELER, W K
    • Hancock, G J
  • Publication Date: 1984-7

Media Info

  • Features: Figures; References;
  • Pagination: 31 p.
  • Serial:
    • Issue Number: R475

Subject/Index Terms

Filing Info

  • Accession Number: 00394163
  • Record Type: Publication
  • Source Agency: ARRB
  • Report/Paper Numbers: Monograph
  • Files: ITRD, TRIS, ATRI
  • Created Date: Aug 31 1985 12:00AM