The symmetrical laminates reinforced with carbon nanotubes (CNTs) offer exceptional performance,due to their high specific stiffness, low density, and excellent fracture toughness. Through theunderstanding of their thermo-mechanical behavior under various stresses and temperature is essential for their design. Moreover, if the distribution and orientation of CNTs are adjusted and their agglomeration is avoided, their integration into a polymer matrix allows the macroscopic application of their exceptional characteristics in different fields. This work provides a micromechanical modeling approach to predict the effective thermo-elasticbehavior ofnanocomposites. In order to determine these effective parameters,the Mori-Tanaka homogenization approach is used.with a volume fraction equal or less thanten percent which, modify significantly thermo-elastic properties of the composite and also, a simplified model where CNTs are modeled as hollow cylindrical shells.These effective properties are combined via MATLAB for ensuring a structural analysis based on the classical laminate theory and first-order shear deformation theory to examine the mechanical behavior and the classical laminate theory to evaluate the thermal behavior of symmetric laminated nanocomposite beams. The model focuses particularly on the thickness distribution of normal as in-plane and out-of-plane shear stresses that vary over thickness and stresses, deformations due to the temperature variation. The resultsshow the need to capture shear deformation effects and indicate the validity ofproposed model for analyzing stress continuity and identifying critical locations in nanocomposite laminates and so how each ply reacts to a temperature variation despite an overall geometry without curvature.
