Abstract
To evaluate the effect of low velocity impact on composite plate using nonlinear explicit finite element software LS-DYNA software. The theoretical basis of the present finite element model is verified by analyzing impact-loaded laminated composite plate previously been studied through analytical. The study of hybrid composite plates are carried were the SMA (shape memory alloy) are used in between the plies to increase the resistance. Also parametric studies were done to find the importance of the Mesh. The present numerical approach is successfully demonstrated through comparisons between experimentally-measured and computed force-time histories for impact of carbon fiber-reinforce plastic (CFRP) plates. Parametric studies are also conducted by varying Mesh results obtained are correlated with the results in the published literature.
Highlights
Composite materials are used in many engineering applications Advance material with high stiffness and high strength such as carbon/epoxy graphite/epoxy and kevler/epoxy are widely used in as structural material in aerospace industries and material transport purpose
This is because a single element cannot model the higher modes of vibration adequately
It was shown that if the shape memory alloy (SMA) wires embedded inside of the unidirectional hybrid composite plate, the global behavior of the structure against the impact would be improved the structure with the SMA wires damps more uniformly and rapidly than the plate without the SMA wires
Summary
Composite materials are used in many engineering applications Advance material with high stiffness and high strength such as carbon/epoxy graphite/epoxy and kevler/epoxy are widely used in as structural material in aerospace industries and material transport purpose. The high-stiffness, high-strength and low-density characteristics make composites highly desirable in primary and secondary structures. The most frequently used shell element is the so called Belytschko-Tsay element It was first implemented in LSDYNA as a computationally more efficient element than its precursor. It is considerably more efficient than the other types of shells and this advantage depends on several mathematical simplifications. Because of these simplifications, it has some disadvantages. It looses stiffness considerably when it is warped and it is not appropriate for analysing warped structures. Since only one integration point in the plane is used, zero energy modes may occur
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