In this study, numerical simulation analysis for the buckling behavior of laminated composite structures with embedded shape memory alloy (SMA) wires which have good characteristics as actuator was performed to investigate the effect of embedded SMA wires on the buckling characteristics of composite structures. In order to simulate the behavior of SMA, constitutive equations based on the previous studies are formulated in the form of ABAQUS user subroutine. Formulated constitutive equations include one dimensional and muti-demensional relations. Their computational program is verified by showing the responses of pseudoelasticity and of the shape memory effect (SME) at all temperatures and stress levels and comparing it with others' results. Modeling of laminated composite shells with embedded SMA wires and nonlinear buckling and postbuckling analysis are obtained by the use of ABAQUS code linked with the subroutine of the suggested SMA constitutive relations. Nonlinear buckling analysis for the case of external load shows that the activation of eccentrically embedded SMA wires raises a sudden increase of reaction forces. This means that the possibility of buckling control by increasing the temperature of SMA wires is suggested. The gain of reaction forces is due to the fact that SME by phase transformation induces strong recovery moments at a deformed state. Buckling analysis for the case of thermal stress without external load is also performed. Thermal buckling analysis of composite shells with embedded SMA wires shows that because of the effect of embedded SMA wires, the critical buckling temperature is increased and the thermal buckling deflection is decreased. Both buckling analyses are performed with reflection of various factor such as the geometrical imperfection, boundary condition, number of embedded SMA wires, laminated angle, and geometrical shape (plate and panel) of the composite shell.
