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On the Modelling of Inelastic Interfaces in Fibrous Composites

Published online by Cambridge University Press:  21 February 2011

Vellore S. Gopalaratnam  and
Jin-Cheng
Vellore S. Gopalaratnam
Affiliation:
Assistant Professor Department of Civil Engineering, 1047 Engineering Complex, Columbia, Missouri 65211, U.S.A.
Jin-Cheng
Affiliation:
Graduate Research Assistant University of Missouri-Columbia, Department of Civil Engineering, 1047 Engineering Complex, Columbia, Missouri 65211, U.S.A.
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Abstract

The classical fiber pull-out problem has been formulated in onedimension with a view to focus on the nonlinear interfacial response. The fiber and the cocentric matrix are assumed to behave elastically. The local interfacial bond-slip characteristic has been idealized to be elastic-linear softening. This greatly simplifies the otherwise implicit governing differential equation of the debonding process. Solutions to the fiber axial force and interfacial shear stress along the embedded length of the fiber have been obtained by applying appropriate boundary and continuity conditions. The stability of the debonding process has been investigated by varying the fundamental characteristics of the fiber-matrix interface, the fiber embedment length and the fiber diameter. The analytical model has been successfully used to predict many of the characteristics experimentally observed in fibrous composites that fail by fiber pull-out.

Type
Research Article
Information
MRS Online Proceedings Library (OPL) , Volume 114: Symposium R – Bonding in Cementitious Composites , 1987 , 225
Copyright
Copyright © Materials Research Society 1988

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References

REFERENCES

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