You are being redirected because this document is part of your ASTM Compass® subscription.
    This document is part of your ASTM Compass® subscription.

    STP631

    Analysis of Stable and Catastrophic Crack Growth Under Rising Load

    Published:


      Format Pages Price  
    PDF (188K) 13 $25   ADD TO CART
    Complete Source PDF (7.6M) 532 $157   ADD TO CART

    Cite this document

    X Add email address send
    X
      .RIS For RefWorks, EndNote, ProCite, Reference Manager, Zoteo, and many others.   .DOCX For Microsoft Word


    Abstract

    Some metals exhibit slow crack growth prior to instability under rising load. This paper is concerned with an elastic-plastic finite element plane-stress analysis of stable and catastrophic crack growth in a center-cracked panel of a ductile material, subjected to a monotonically increasing applied stress. The stable crack growth phenomenon is modeled by incorporating a local failure criterion in the stress-analysis procedure. An automatic reidealization procedure is developed to refine the finite element mesh at the new crack-tip position before external load is increased. The method is applied to study the crack-growth behavior of geometrically similar panels of different material stress-strain curves, and results are compared with experiment. The effects of some important parameters on crack growth and stability under rising load are discussed.

    Keywords:

    crack propagation, fractures (materials), rising load, elasto-plasticity, failure criterion, aluminum


    Author Information:

    Varanasi, SR
    Specialist engineer, Stress and Fatigue Research, Boeing Commerical Airplane Company, Seattle, Wash.


    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP35558S