Theoretical model for laminated composite beam consisting of　multiple superelastic shape memory alloy layers

摘要

A novel theoretical model for a laminate cantilever beam consisting of numerous superelastic shape memoryalloy (SMA) layers, based on the ZM model and Timoshenko theory is introduced. The mathematical equations arefirst developed to predict and describe the internal material structure of laminated beam, according to the solid phasetransformation in SMA layers. Then, the theoretical expression of the moment and shear force for a superelasticSMA composite cantilever beam is derived. The proposed model is validated against a 3D finite element analysismodel (FEA), giving very good agreement in each case. The moment-curvature response, and distribution ofmartensite volume fraction and axial stress along the beam length are investigated.