A comparative study of three groups of ductile fracture loci in the 3D space

    Authors

    Y. L. Bai;T. Wierzbicki

    Comments

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    Abbreviated Journal Title

    Eng. Fract. Mech.

    Keywords

    Ductile fracture; 3D fracture locus; Phenomenological models; Physics; models; Empirical models; SHEAR MODIFIED GURSON; STRESS TRIAXIALITY; ALUMINUM EXTRUSIONS; SHEET; METALS; CUTOFF VALUE; FAILURE; MODEL; STRAIN; CRITERION; PREDICTION; Mechanics

    Abstract

    Ductile fracture is inherently a three-dimensional phenomenon and should be represented in the 3-D space. Sixteen fracture models are evaluated and divided into three groups: physics based models, phenomenological models and empirical models. These models are then calibrated from the three sets of experimental data, TRIP 690 and TRIP 780 steel sheets and 2024-T351 aluminum alloy. Under the assumption of monotonic loading conditions, major qualitative differences emerged from the comparison of the models in terms of the range of applicability as well as shapes of the 3D fracture envelope are discussed. Several implicit features of these models are revealed. (C) 2015 Elsevier Ltd. All rights reserved.

    Journal Title

    Engineering Fracture Mechanics

    Volume

    135

    Publication Date

    1-1-2015

    Document Type

    Article

    Language

    English

    First Page

    147

    Last Page

    167

    WOS Identifier

    WOS:000350002800009

    ISSN

    0013-7944

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