APPLICATIONS OF DIGITAL MODAL ANALYSIS USING TRANSIENT EXCITATION

A method is described for investigating dynamic characteristics of structures and components by digital analysis of their response to transient excitation. The advantages and limitations of the method are briefly discussed. Two applications of the technique are described. In one application the resulting mode shapes are compared with those obtained by double-pulse holography. Difficulties involved in handling the large amounts of data generated and in displaying the mode shapes are discussed. The method seems to have wide application to small structures or components where resonance is thought to be the source of a noise or vibration problem. Order from: BSRA as No. 46,876.

• Corporate Authors:

  Department of Industry

  1 Victoria Street
  London SW1H 0ET,   England 
• Authors:
  • Mackay, A
  • Dougan, A C
• Publication Date: 1977-5

Media Info

• Features: References;
• Pagination: 27 p.

Subject/Index Terms

• TRT Terms: Digital computers; Dynamic loads; Holography; Modal analysis; Modal split; Noise sources; Resonance; Structural analysis; Vibration
• Uncontrolled Terms: Dynamic response
• Old TRIS Terms: Digital systems; Resonance phenomena; Structural vibration
• Subject Areas: Marine Transportation; Vehicles and Equipment;

Filing Info

• Accession Number: 00170148
• Record Type: Publication
• Source Agency: British Ship Research Association
• Report/Paper Numbers: No. 637
• Files: TRIS
• Created Date: Mar 7 1978 12:00AM