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| Equal-effective mechanical behavior of Shape Memory Alloys fiber-reinforced composite |
| Revised:July 23, 2002 |
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| DOI：10.7511/jslx20042043 |
| KeyWord:Shape Memory Alloys,composite,model of cells,equal-effective mechanic behavior |
| Liu Airong~ |
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| Abstract: |
| Based on the cell models for elastic-viscoplastic composite proposed by Aboudi and Shape Memory Alloys (SMAs) constitutive model established by Liu,etc., the models of cells are derived for SMA fiber-reinforced composite, in which the matrix is assumed to be elastic-plastic work-hardening materials and SMAs fibers are imbedded in the matrix in the form of a double periodic array. In terms of the Legendre polynomials, the displacement distribution, strain field and stress field in each subcell are given. The displacements and stress components along the interfaces of subcells are considered to be continuous, and load boundary conditions which applied in the subcells is also formulated. On such basis, the relation of average stress and strain for SMAs fiber-reinforced composites are obtained, furthermore the equal-effective behavior of periodic symmetrical SMA fibrous composite material under axial tension, transverse tension and transverse shear are simulated. The result of cell models is in agreement with finite element results by comparison, however cell models for Shape Memory Alloys fiber-reinforced composites derived in this paper are more efficient than finite element method. |
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