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The effects of some physical and geometrical parameters on improvement of the impact response of smart composite structures

The effects of some physical and geometrical parameters on improvement of the impact response of smart composite structures

F. Ashenai Ghasemi*, A. Shokuhfar, S. M. R. Khalili, K. Malekzadehfard

International Journal of Mathematical Models and Methods in Applied Sciences, Volume 3, Issue 3, 2009(9), Pages 206-274. (SCOPUS)

Abstract

This article presents a complete analytical model to study the role of the shape memory alloys (SMAs) on improvement the impact response of the smart composite structures. The role of some physical and geometrical parameters such as the volume fraction, the orientation and the location of the SMA wires on the contact force history, the deflection, the in-plane strains and stresses of the structures is investigated in details. Also the effect of density of the impactor to the plate ratio and the elastic modulus of the impactor to the plate ratio on the contact force history and the deflection of the plate is studied. 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 smart composite structures improve the global behavior of the structure against the impact. The smart composite structures damp more uniformly and rapidly after the impact.

Keywords

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

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