THICK-WALLED RINGS FOR ENERGY ABSORBING BRIDGE RAIL SYSTEMS

AN ANALYSIS PROCEDURE IS PRESENTED WHICH PROVIDES A QUANTITATIVE ASSESSMENT OF THE ENERGY DISSIPATED IN THICK-WALLED RINGS WHEN LOADED IN-PLANE TO COMPLETE COLLAPSE. THE PROCEDURE RELATES THE RING GEOMETRY AND MATERIAL CHARACTERISTICS, INCLUDING STRAIN RATE EFFECTS, TO THE DISSIPATED ENERGY. THE ANALYSIS IS ADAPTABLE AS A DESIGN TOOL TO SIZE SUCH RINGS FOR USE AS DISSIPATIVE ELEMENTS IN LARGER SYSTEMS. THE FEASIBILITY OF APPLYING THE ANALYSIS TO AN ENERGY-ABSORBING BRIDGE RAIL SYSTEM UTILIZING SUCH A RING IS DEMONSTRATED. THE EXAMPLE APPLICATION APPROXIMATES THE EFFECTS OF MATERIAL STRAIN RATE SENSITIVITY AND LARGE DISPLACEMENTS IN THE RING AS WELL AS IN THE OTHER ELEMENTS OF THE STRUCTURE. CONSTRUCTION OF HARDWARE SIMILAR TO THE EXAMPLE PRESENTED IS PLANNED AND FULL-SCALE TEST RESULTS WILL BE AVAILABLE TO FURTHER DEMONSTRATE THE VALIDITY OF THE BASIC PROCEDURES IN THE ANALYSIS. THE RING ELEMENT SEEMS TO BE AN IDEAL CANDIDATE FOR USE IN OTHER ROADSIDE STRUCTURES REQUIRING DISSIPATIVE COMPONENTS AND THIS REPORT IS BEING DISTRIBUTED TO ASSIST IN SUCH UTILIZATION WHERE APPLICABLE.

  • Corporate Authors:

    Catholic University of America

    Department of Civil and Mechanical Engineering
    Washington, DC  USA  20017
  • Authors:
    • Perrone, N
  • Publication Date: 1972-12

Media Info

  • Pagination: 45 p.

Subject/Index Terms

Filing Info

  • Accession Number: 00203191
  • Record Type: Publication
  • Source Agency: Federal Highway Administration
  • Report/Paper Numbers: FHWA-RD-73- 49 Final Rpt., FCP 31G2-023
  • Contract Numbers: FH-11-7508
  • Files: TRIS, USDOT
  • Created Date: Apr 27 1976 12:00AM