BEHAVIOR AND DESIGN OF SHINGLE JOINTS

THE BEHAVIOR OF SHINGLE-TYPE JOINTS IN THE WORKING LOAD RANGE AND IN THE NON-LINEAR RANGE WAS EXAMINED, AND EXISTING METHODS FOR DETERMINING THE APPROXIMATE DISTRIBUTION OF LOAD WERE COMPARED WITH THE EXPERIMENTAL PROGRAM. THE CONCLUSIONS ARE AS FOLLOWS: (1) A325 BOLTS WERE CAPABLE OF SATISFACTORY BEHAVIOR AT ALLOWABLE SHEAR STRESSES UP TO 40% HIGHER THAN THOSE USED IN CURRENT PRACTICE. (2) AT HIGH A SUB N/A SUB S RATIOS, ONE-REGION BUTT JOINTS WERE PREDICTED TO BE MORE EFFICIENT THAN SHINGLE JOINTS WITH TWO AND THREE REGIONS. (3) THE TEST RESULTS CONFIRMED THE INDICATIONS OF PREVIOUS STUDIES THAT SLIP IN SHINGLE JOINTS TENDS TO BE LESS THAN THE HOLE CLEARANCE. (4) TWO DISTINCT TYPES OF BEHAVIOR IN THE NON-LINEAR RANGE WERE ENCOUNTERED. (5) IN THE 3-REGION JOINTS, THE TESTS SHOWED THAT A CONDITION CLOSE TO DOUBLE SHEAR OCCURRED IN THE FIRST REGION BUT THAT SINGLE SHEAR WAS MORE EVIDENT IN THE INTERIOR REGIONS. (6) THE LOAD DISTRIBUTED TO THE SPLICE PLATES AT THE POSITION OF A MAIN PLATE TERMINATION WAS MORE PROPORTIONAL TO THE AREA OF THE SPLICE PLATES AT THAT POINT THAN TO THE AREA OF THE MAIN PLATE BEING TERMINATED. (7) THE DISTRIBUTION OF LOAD 1 CAN BE MISLEADING FOR DESIGN, SINCE THE METHOD SUBSTANTIALLY UNDERESTIMATES THE LOAD CARRIED BY THE SPLICE PLATES FURTHEST FROM THE PLATE DISCONTINUITIES. (8) A REASONABLE APPROXIMATION OF THE LOAD PARTITION IN SHINGLE JOINTS CAN BE MADE BY ASSUMING THE FORCE IN ALL CONTINUOUS MEMBERS AT THE POSITION OF A MAIN PLATE TERMINATION TO BE PROPORTIONAL TO THEIR AREAS. (9) A MORE EXACT APPROXIMATION CAN BE MADE USING THE TWO-STAGE DISTRIBUTION, TAKING INTO ACCOUNT THE SUDDEN PICK-UP OF LOAD IN PLATES DIRECTLY ADJACENT TO A PLATE TERMINATION. /AUTHOR/

  • Supplemental Notes:
    • No 340, 23 PP, 8 FIG, 3 TAB, 12 REF
  • Corporate Authors:

    Lehigh University

    Bethlehem, PA  USA  18015
  • Authors:
    • Power, E H
    • Fisher, J W
  • Publication Date: 1971-11

Subject/Index Terms

Filing Info

  • Accession Number: 00209577
  • Record Type: Publication
  • Files: TRIS
  • Created Date: Mar 27 1972 12:00AM