Validation of Johnson-Cook plasticity and damage model using impact experiment

The validity of the Johnson–Cook constitutive relation and failure criterion at high strain rates, up to ∼106 s−1, was assessed by predicting the dynamic response of Ti–6Al–4V under high-speed ball impact at various velocities and angles. White-light scanning was performed to characterize impact cra...

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Bibliographic Details
Published inInternational journal of impact engineering Vol. 60; pp. 67 - 75
Main Authors Wang, Xuemei, Shi, Jun
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 01.10.2013
Subjects
Constitutive relationships
Craters
Damage
Dynamic response
Failure
Finite element method
Foreign object damage
High speed
High strain rate
Impact
Johnson–Cook
Mathematical analysis
Mathematical models
Numerical prediction
Impact
Johnson–Cook
High strain rate
Foreign object damage
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Summary:The validity of the Johnson–Cook constitutive relation and failure criterion at high strain rates, up to ∼106 s−1, was assessed by predicting the dynamic response of Ti–6Al–4V under high-speed ball impact at various velocities and angles. White-light scanning was performed to characterize impact craters formed on target surfaces. The measured crater was compared with that predicted by the corresponding finite element model developed using the finite element code Abaqus/Explicit. The target material behavior was modeled by the Johnson–Cook material model that induced both plastic deformation and damage mechanism. Good agreement was obtained between the experimental measurements and numerical predictions for all testing conditions.
Bibliography:ObjectType-Article-2
SourceType-Scholarly Journals-1
ObjectType-Feature-1
content type line 23
ISSN:0734-743X
1879-3509
DOI:10.1016/j.ijimpeng.2013.04.010