STP803V2: Application of Two Approximate Methods for Ductile Failure Assessment

    Hodulak, L
    Senior scientist and head of Metallic Materials Group, Fraunhofer-Institut für Wöhlerstrasse,

    Blauet, JG
    Senior scientist and head of Metallic Materials Group, Fraunhofer-Institut für Wöhlerstrasse,

    Pages: 12    Published: Jan 1983


    Abstract

    Test results of large-scale specimens are analyzed on the basis of the tearing instability concept. The “Engineering Approach” of Shih et al and the extended “Failure Assessment Diagram” of Milne are used together with crack resistance J-R curves obtained from small-scale compact specimens to evaluate the loads at crack initiation and instability and the amount of stable crack growth. A detailed parameter study is conducted to show the sensitivity of the numerical results to the variation of input data such as stress-strain law, limit load, and the material resistance curve.

    Keywords:

    failure assessment, elastic-plastic fracture, crack initiation, stable crack growth, tearing instability


    Paper ID: STP36763S

    Committee/Subcommittee: E08.08

    DOI: 10.1520/STP36763S


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