An elastic–plastic constitutive model for ceramic composite laminates

Existing phenomenological constitutive models are unable to capture the full range of behaviors of ceramic composite laminates. To ameliorate this deficiency, we propose a new model based on the deformation theory of plasticity. The predictive capabilities of the model are assessed through compariso...

Full description

Saved in:
Bibliographic Details
Published in:Composites. Part A, Applied science and manufacturing Applied science and manufacturing, 2014-11, Vol.66, p.44-57
Main Authors: Rajan, Varun P., Shaw, John H., Rossol, Michael N., Zok, Frank W.
Format: Article
Language:English
Subjects:
A. Ceramic–matrix composites (CMCs)
B. Mechanical properties
C. Computational modeling
C. Finite element analysis
Ceramics
Constitutive relationships
Cross-disciplinary physics: materials science
rheology
Displacement
Exact sciences and technology
Laminates
Materials science
Mathematical models
Other materials
Physics
Plasticity
Specific materials
Strain
Tensile tests
Citations: Items that this one cites
Items that cite this one
Online Access:Get full text
Tags: Add Tag
No Tags, Be the first to tag this record!
Description
Summary:Existing phenomenological constitutive models are unable to capture the full range of behaviors of ceramic composite laminates. To ameliorate this deficiency, we propose a new model based on the deformation theory of plasticity. The predictive capabilities of the model are assessed through comparisons of computed and measured strain and displacement fields in open-hole tension tests. The agreements in the magnitude of strains and in the size and shape of shear bands that develop around a hole are very good over most of the loading history. Some discrepancies are obtained at high stresses. These are tentatively attributed to non-proportional stressing of some material elements: a feature not captured by the present model.
ISSN:1359-835X
1878-5840
DOI:10.1016/j.compositesa.2014.06.013