Three-dimensional progressive failure modeling of glass fiber reinforced thermoplastic composites for impact simulation

In this study, a three-dimensional (3D) progressive failure material model was developed for glass fiber reinforced thermoplastic (GFRP) composites to predict the nonlinear mechanical response under impact loads. For the formulation of progressive failure, the material property degradation model (MD...

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Bibliographic Details
Published inComposite structures Vol. 176; pp. 757 - 767
Main Authors Kim, Do-Hyoung, Jung, Ku-Hyun, Lee, In-Gyu, Kim, Hee-June, Kim, Hak-Sung
Format Journal Article
LanguageEnglish
Published Elsevier Ltd 15.09.2017
Subjects
Damage mechanics
Finite element analysis (FEA)
Polymer-matrix composites (PMCs)
Thermoplastic resin
Damage mechanics
Polymer-matrix composites (PMCs)
Finite element analysis (FEA)
Thermoplastic resin
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Summary:In this study, a three-dimensional (3D) progressive failure material model was developed for glass fiber reinforced thermoplastic (GFRP) composites to predict the nonlinear mechanical response under impact loads. For the formulation of progressive failure, the material property degradation model (MDM) was constructed using a continuum damage mechanics (CDM) model based on the 3D Hashin failure criteria. The proposed progressive failure formulations were implemented in the user-defined material model (UMAT) in the commercial nonlinear finite element analysis (FEA) software LS-Dyna. Then, the progressive failure model was verified experimentally with flexural and impact tests. Finally, it was found that the proposed 3D progressive failure model can be used to predict not only damage progression and impact behavior, but also interlaminar delamination.
ISSN:0263-8223
1879-1085
DOI:10.1016/j.compstruct.2017.06.031