Analysis of smart hybrid composite plate under low velocity impact

S. M. R. Khalili^*, A. Shokuhfar, F. Ashenai Ghasemi, N. Ehsani

Sixth International Conference on Composite Science and Technology (ICCST/6), Durban, South Africa, January 22-24, 2007.

Abstract
Analysis of smart hybrid composite plate subjected to low velocity impact was done and the effect of using SMA wires as well as some of the parameters such as the volume fraction, the orientation and the location of the SMA wires, the mass and the velocity of the impactor on contact force history, deflection, in-plane strains and stresses of the structures was investigated in details. The first order shear deformation theory as well as the Fourier series method was utilized to solve the governing equations of the composite plate analytically. The interaction between the impactor and the plate was modeled with the help of two degrees of freedom system consisting of springs-masses. The Choi’s linearized contact model was used in the analysis. The results of the above research indicated that the use of the SMA wires inside the hybrid composite plates improve the global behavior of the structure against the impact. The smart hybrid composite plate damp more uniformly and rapidly after the impact. The results demonstrated that some of the geometrical and the material parameters are the important factors affecting the impact process and the design of the structures. In addition, it was shown that the destructive effect of increasing the impactor velocity is more than that of the impactor mass.

Keywords

Impact; Smart hybrid composite; SMA wires; Springs-masses model.