PARAMETRIC VIBRATION RESPONSE OF COLUMNS

EXISTING ANALYSIS TECHNIQUES FOR LATERAL COLUMN VIBRATIONS UNDER TIME DEPENDENT AXIAL LOADS NEGLECT THE DYNAMIC AMPLIFICATION CAUSED BY THESE LOADS. RESPONSE TO ONE TYPE OF DYNAMIC LOAD IS INVESTIGATED, AND THE BASIC LINEAR DIFFERENTIAL EQUATION OF MOTION IS DEVELOPED. MAXIUMUM TRANSIENT DISPLACEMENTS AT MIDSPAN OF INITIALLY CURVED COLUMNS ON SIMPLE SUPPORTS UNDER STATIC PLUS SINUSOIDAL DYNAMIC AXIAL LOAD ARE FOUND BY AN ANALOG COMPUTER. RESULTS ARE PLOTTED IN THE FORM OF RESPONSE SPECTRA, AND AN EXAMPLE OF THEIR USE IS SHOWN. REGIONS OF INSTABILITY ARE SEEN TO BE IN AGREEMENT WITH PUBLISHED ANALYTICAL SOLUTIONS. EVEN NUMBERED INSTABLE REGIONS ARE FOUND TO BE OF GREATER SIGNIFICANCE THAN ODD NUMBERED REGIONS. INTERPRETATION OF THE SPECTRA TO REPRESENT AXIAL SUPPORT MOVEMENT IS SHOWN. /ASCE/

• Availability:
  • Find a library where document is available. Order URL: http://worldcat.org/issn/07339399
• Supplemental Notes:
  • Vol 95, No EM3, PROC PAPER 6619, PP 665-677, 8 FIG, 17 REF,
• Authors:
  • Anderson, T L
  • Moody, M L
• Publication Date: 1969-6

Media Info

• Serial:
  • Journal of Engineering Mechanics
  • Publisher: American Society of Civil Engineers
  • ISSN: 0733-9399
  • EISSN: 1943-7889
  • Serial URL: http://ascelibrary.org/journal/jenmdt

Subject/Index Terms

• TRT Terms: Analog computers; Axial loads; Columns; Dynamics; Resonance frequency; Stability (Mechanics); Vibration
• Subject Areas: Bridges and other structures; Highways;

Filing Info

• Accession Number: 00209052
• Record Type: Publication
• Files: TRIS
• Created Date: Sep 29 1994 12:00AM