STP833

    Application of a Tearing Instability Analysis for Strain-Hardening Materials to a Circumferentially Cracked Pipe in Bending

    Published: Jan 1984


      Format Pages Price  
    PDF (332K) 25 $25   ADD TO CART
    Complete Source PDF (12M) 25 $81   ADD TO CART


    Abstract

    All previous tearing instability analyses for circumferentially cracked pipes require the use of a limit-load assumption. In this paper a more general approach is developed for power law hardening materials. Specifically, a simple J and (∂J/∂a)ΔT estimation scheme for a circumferentially cracked pipe subjected to four-point bending is developed using a power hardening law for the plastic part of deformation. The predictions of crack initiation and tearing instability are compared with experimental data. Comparisons with tearing instability predictions using the limit-load approach are also provided.

    Keywords:

    tearing instability, J, -resistance curve, J, -estimation method, pipe fracture, fracture mechanics


    Author Information:

    Pan, J
    Mechanics Section, Battelle-Columbus Laboratories, Columbus, Ohio

    Ahmad, J
    Engineering and Materials Sciences Division, Southwest Research Institute, San Antonio, Tex.

    Kanninen, MF
    Engineering and Materials Sciences Division, Southwest Research Institute, San Antonio, Tex.

    Popelar, CH
    The Ohio State University, Columbus, Ohio


    Paper ID: STP32582S

    Committee/Subcommittee: E08.06

    DOI: 10.1520/STP32582S


    CrossRef ASTM International is a member of CrossRef.