INFLUENCE OF DETAILS ON FATIGUE OF STRUCTURES
THE BEHAVIOR OF A STRUCTURE SUBJECTED TO CYCLIC LOADS IS DEPENDENT UPON A NUMBER OF DETAILS, EITHER INTENTIONAL OR UNINTENTIONAL, WHICH COULD BE POTENTIAL INITIATION SITES. SINCE THE OVER-ALL EFFECT OF SUCH DETAILS ON FATIGUE STRENGTH CANNOT BE CALCULATED ACCURATELY, DESIGN VALUES HAVE USUALLY BEEN BASED ON LABORATORY DATA GENERATED IN TESTS OF SPECIMENS THAT SIMULATE THE CHARACTERISTIC STRESS-RAISER OF THE ACTUAL DETAIL. THE DATA FROM TESTS OF BUTT- AND FILLET- WELDED JOINTS, BEAM DETAILS, RIVETED AND BOLTED JOINTS IN BASE MATERIALS OF THE COMMON CLASSES OF STRUCTURAL STEELS ARE PRESENTED AND ANALYZED. DETAILS HAVE A MAJOR INFLUENCE ON THE FATIGUE BEHAVIOR OF STRUCTURES BECAUSE THEY RESULT IN: (1) LOCALIZED INCREASES IN STRESS (ABOVE THE NOMINAL STRESS) AND (2) RESIDUAL STRESSES. THE TEST DATA GENERATED IN THE LABORATORY HAVE PROVIDED A BASIS FOR ESTABLISHMENT OF ALLOWABLE STRESSES AND THE DEVELOPMENT OF PROPER DESIGN TECHNIQUES TO PREVENT FATIGUE FAILURES IN STRUCTURES. IN ADDITION, METHODS HAVE BEEN DEVELOPED TO IMPROVE THE FATIGUE STRENGTH OF STRUCTURES CONTAINING CRITICAL DETAILS BY MINIMIZING THE STRESS CONCENTRATION OR FAVORABLY ALTERING RESIDUAL STRESSES, OR BOTH. /ASCE/
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Supplemental Notes:
- Vol 94, No ST12, PROC PAPER 6286, PP 2679-2697, 21 FIG, 3
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Authors:
- Mindlin, H
- Publication Date: 1968-12
Media Info
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Serial:
- Journal of the Structural Division
- Publisher: American Society of Civil Engineers
Subject/Index Terms
- TRT Terms: Bolted joints; Bolts; Butt joints; Butt welds; Failure; Fatigue (Physiological condition); Fatigue tests; Fillet welds; Joints; Residual stress; Rivets; Stresses; Structural analysis; Structural mechanics; Structural steel
- Uncontrolled Terms: Stress concentration; Structural behavior; Structural failures
- Old TRIS Terms: Riveted joints
- Subject Areas: Bridges and other structures; Highways;
Filing Info
- Accession Number: 00208916
- Record Type: Publication
- Files: TRIS
- Created Date: Apr 10 1994 12:00AM