DYNAMIC RESPONSE OF DISCRETELY DAMPED STRUCTURES UNDER HARMONIC AND RANDOM EXCITATION

One way of minimizing the excitation of a structure under dynamic loading 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 while 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 multi-storey frame structures and a cable stayed pedestrian footbridge are described. These studies include investigations of the location and magnitude of the dampers. (Author/TRRL)

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/01410296
• Corporate Authors:

  Butterworth Scientific Limited

  Journals Division, P.O. Box 63, Westbury House, Bury
  Guildford, Surrey  England  GU2 5BH
• Authors:
  • WHEELER, W K
  • Hancock, G J
• Publication Date: 1985-10

Media Info

• Features: Figures; References;
• Pagination: p. 237-244
• Serial:
  • Engineering Structures
  • Volume: 7
  • Issue Number: 4
  • Publisher: Elsevier
  • ISSN: 0141-0296
  • Serial URL: http://www.sciencedirect.com/science/journal/01410296

Subject/Index Terms

• TRT Terms: Cable stayed bridges; Damping (Physics); Dynamic loads; Footbridges; Framed structures; Structural analysis; Structural mechanics
• Uncontrolled Terms: Dynamic response; Structural behavior
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00462673
• Record Type: Publication
• Source Agency: Transport Research Laboratory
• Files: ITRD, TRIS
• Created Date: Mar 31 1987 12:00AM