Abstract
The purpose of this study is to provide a numerical method to model the constitutive behavior of aluminum matrix NiTi fiber-reinforced smart composite along the fiber direction. In the present approach, pseudo-elasticity, shape-memory, and strain-hardening effects have been taken into account. During phase transformation, the strain–temperature relation of NiTi fibers has been assumed to be linear. Hence, the incremental stress–strain relationship of the fibers has been derived for each temperature range where phase transformation takes place. A bi-linear and isotropic hardening elasto-plastic model has been employed to describe the stress–strain relation of the aluminum matrix. With the consideration of the fabrication procedure, the stress–strain behavior of the composite has been computed.
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