Shear-lag model for a single fiber metal matrix composite with an elasto-plastic matrix and a slipping interface

S. Mahesh*, J. C. Hanan, E. Üstündag, I. J. Beyerlein

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34 Atıf (Scopus)

Özet

We present a shear-lag stress analysis methodology which accounts for both matrix strain-hardening plasticity and interfacial slip in a single fiber metal matrix composite (MMC) subjected to uniaxial tensile loading and unloading along the fiber direction. The fiber may either be broken or intact. Among other things, the model predicts residual stress and strain distribution after a cycle in the fiber and matrix. The development of the model is motivated by the recent measurement by Hanan et al. [Mater. Sci. Eng. A, in press], of elastic strain evolution with loading in each phase of an Al2O3/Al composite using neutron diffraction. The model also estimates two crucial in situ material parameters using these measurements, which cannot be obtained from bulk tests: the frictional threshold of the interface, and the in situ yield point of the matrix. With these parameters, the predicted elastic strain evolution with loading is in excellent agreement with the experimental data.

Orijinal dilİngilizce
Sayfa (başlangıç-bitiş)4197-4218
Sayfa sayısı22
DergiInternational Journal of Solids and Structures
Hacim41
Basın numarası15
DOI'lar
Yayın durumuYayınlandı - Tem 2004
Harici olarak yayınlandıEvet

Finansman

This study was supported by the National Science Foundation (CAREER grant no. DMR-9985264) at Caltech and a Laboratory-Directed Research and Development Project (no. 2000043) at Los Alamos.

FinansörlerFinansör numarası
National Science Foundation

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