On A Mixed-Mode Dugdale Model

    Authors

    D. W. Nicholson

    Comments

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    Abbreviated Journal Title

    Acta Mech.

    Keywords

    Mechanics

    Abstract

    A model attributed to Dugdale provides a correction for plasticity effects at crack tips in Mode I, under the assumption of small-scale yielding. Similar models have been proposed for Modes II and III, the former fairly recently. In the present study, the Dugdale model is extended to cases combining Modes I, II and III, based on the von Mises yield criterion. The combined model provides an a posteriori estimate for plasticity effects, based only on the stress intensity factors from the elasticity solution. It also provides an estimate for the crack-opening displacement and the J-integral value. In the limit of small loads, the corresponding elastic results are recovered.

    Journal Title

    Acta Mechanica

    Volume

    98

    Issue/Number

    1-4

    Publication Date

    1-1-1993

    Document Type

    Article

    Language

    English

    First Page

    213

    Last Page

    219

    WOS Identifier

    WOS:A1993KU58100015

    ISSN

    0001-5970

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