Stress concentrations in multiple fibre model composites

Publikationstyp
Journal Article
Date Issued
1998
Sprache
English
Author(s)
Fiedler, Bodo  orcid-logo
Klisch, A.  
Schulte, Karl  
Institut
Kunststoffe und Verbundwerkstoffe M-11  
TORE-URI
http://hdl.handle.net/11420/13356
Journal
Composites Part A: Applied Science and Manufacturing  
Volume
29
Issue
9-10
Start Page
1013
End Page
1019
Citation
Composites Part A: Applied Science and Manufacturing 29 (9-10) : 1013-1019 (1998)
Publisher DOI
10.1016/S1359-835X(98)00014-1
Scopus ID
2-s2.0-0031623760
The finite element method is used to examine the load transfer in the fibre-matrix interface and between broken and neighbouring unbroken fibres. Three different models for the stress-strain dependence of the matrix were chosen for modelling the stress transfer: linear elastic, linear elastic-ideal plastic and hypoelastic. The hypoelastic behaviour is similar to the time independent viscoelastic behaviour of the polymer matrix. The hypoelastic model of the stress-strain behaviour can describe the mechanical properties of different matrix materials taken from simple tensile tests. The values of the stress intensity factors were used to discuss the different material models. The hypoelastic matrix behaviour results in realistic stress concentration factors K caused by a single fibre break.
Subjects
C. micro mechanics
Finite element analysis
Hypoelasticity
Interfacial shear stress
Load transfer
Stress analysis
Stress concentration