Micromechanically-motivated phase field approach to ductile fracture
被引:12
作者:
Azinpour, Erfan
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Inst Sci & Innovat Mech & Ind Engn INEGI, Porto, Portugal
Univ Porto FEUP, Fac Engn, Porto, PortugalInst Sci & Innovat Mech & Ind Engn INEGI, Porto, Portugal
Azinpour, Erfan
[1
,2
]
de Sa, Jose Cesar
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Inst Sci & Innovat Mech & Ind Engn INEGI, Porto, Portugal
Univ Porto FEUP, Fac Engn, Porto, PortugalInst Sci & Innovat Mech & Ind Engn INEGI, Porto, Portugal
de Sa, Jose Cesar
[1
,2
]
dos Santos, Abel Dias
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机构:
Inst Sci & Innovat Mech & Ind Engn INEGI, Porto, Portugal
Univ Porto FEUP, Fac Engn, Porto, PortugalInst Sci & Innovat Mech & Ind Engn INEGI, Porto, Portugal
dos Santos, Abel Dias
[1
,2
]
机构:
[1] Inst Sci & Innovat Mech & Ind Engn INEGI, Porto, Portugal
Utilization of the phase-field diffusive crack approach in prediction of crack evolution in materials containing voids is investigated herein. It has been established that the ductile failure occurs predominantly due to nucleation, growth and coalescence of micro-voids and micro-cavities, which lead to initiation and propagation of cracks till final material collapse. This study is an attempt to model the material internal degradation with the Rousselier pressure-dependent plasticity law, assisted with the phase field diffusive crack approach for the first time, in order to account for the post-critical softening regime. Such treatment requires the utilization of a damage evolution law and a crack initiation criterion which triggers the succeeding crack propagation, whereby a modified crack driving force based on the sequence of internal damage is employed. In numerical terms, the proposed model is integrated within a fully-staggered framework for the mechanical and diffusive fields and is implemented via the finite element method. The verification tests on the model is processed by several examples with the focus on both qualitative monitoring of pathological crack patterns and the quantitative analysis on the material response, particularly in the post-critical range, complemented by relevant comparisons with the existing data from literature.
机构:
Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Univ Sheffield, Comp Aided Aerosp & Mech Engn Res Grp CA2M, Sheffield, S Yorkshire, England
Univ Kebangsaan Malaysia, Fac Engn & Build Environm, Dept Mech & Mat Engn, Bangi, MalaysiaUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Ahmad, M. I. M.
Curiel-Sosa, J. L.
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Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Univ Sheffield, Comp Aided Aerosp & Mech Engn Res Grp CA2M, Sheffield, S Yorkshire, EnglandUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Curiel-Sosa, J. L.
Arun, S.
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机构:
Univ Phayao, Sch Mech Engn, Phayao, ThailandUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Arun, S.
Rongong, J. A.
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Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, EnglandUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
机构:
Univ Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
ICIST, Lisbon, PortugalUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
Areias, P.
Dias-da-Costa, D.
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机构:
Univ Coimbra, Dept Civil Engn, Coimbra, Portugal
INESC Coimbra, P-3000033 Coimbra, PortugalUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
Dias-da-Costa, D.
Sargado, J. M.
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机构:
Bauhaus Univ Weimar, Inst Struct Mech, D-99423 Weimar, GermanyUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
Sargado, J. M.
Rabczuk, T.
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Bauhaus Univ Weimar, Inst Struct Mech, D-99423 Weimar, GermanyUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
机构:
Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Univ Sheffield, Comp Aided Aerosp & Mech Engn Res Grp CA2M, Sheffield, S Yorkshire, England
Univ Kebangsaan Malaysia, Fac Engn & Build Environm, Dept Mech & Mat Engn, Bangi, MalaysiaUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Ahmad, M. I. M.
Curiel-Sosa, J. L.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Univ Sheffield, Comp Aided Aerosp & Mech Engn Res Grp CA2M, Sheffield, S Yorkshire, EnglandUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Curiel-Sosa, J. L.
Arun, S.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Phayao, Sch Mech Engn, Phayao, ThailandUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
Arun, S.
Rongong, J. A.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, EnglandUniv Sheffield, Dept Mech Engn, Sir Frederick Mappin Bldg, Sheffield S1 3JD, S Yorkshire, England
机构:
Univ Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
ICIST, Lisbon, PortugalUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
Areias, P.
Dias-da-Costa, D.
论文数: 0引用数: 0
h-index: 0
机构:
Univ Coimbra, Dept Civil Engn, Coimbra, Portugal
INESC Coimbra, P-3000033 Coimbra, PortugalUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
Dias-da-Costa, D.
Sargado, J. M.
论文数: 0引用数: 0
h-index: 0
机构:
Bauhaus Univ Weimar, Inst Struct Mech, D-99423 Weimar, GermanyUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal
Sargado, J. M.
Rabczuk, T.
论文数: 0引用数: 0
h-index: 0
机构:
Bauhaus Univ Weimar, Inst Struct Mech, D-99423 Weimar, GermanyUniv Evora, Dept Phys, Colegio Luis Antonio Verney, P-7002554 Evora, Portugal