ABSTRACT
This paper aims to investigate the mechanical behavior of the Fe-SMA/steel hybrid joints. Based on the cohesive zone modeling of software ABAQUS, the numerical model of Fe-SMA/steel hybrid joints is developed, and the parametric analysis on overlap length is carried out. Besides, the damage evolution, failure modes and failure load of hybrid joints under tensile load are evaluated. The proposed model can reasonably simulate the performance of Fe-SMA/steel hybrid joints under tensile load. The results show that the failure load of Fe-SMA/steel hybrid joints increases with the improving overlap length. The existence of the optimal overlap length can ensure good mechanical behavior of Fe-SMA/steel hybrid joints and can reduce the consumption of engineering materials. Furthermore, the failure process of Fe-SMA/steel hybrid joints is firstly the failure of adhesive layers, and finally the bearing failure of the Fe-SMA plates leads to the failure of the whole joint.
