Paper number 1250

DESIGN AND COMPUTER MODELLING OF SMART COMPOSITE MATERIALS OF THE TYPE LAMINATED METAL-CERAMIC COMPOSITES WITH NEURAL NETWORK ADAPTIVE CONTROL OF ELASTIC WAVES TRANSFORMATIONS

V. D. Koshur

Institute of Computational Modelling of RAS
660036, Krasnoyarsk, Academgorodok, RUSSIA

Summary

The converse piezoelectric effect is used to suppress the amplitudes or to modify the frequency of elastic waves which propagated along thickness of a laminated metal-ceramic plate when on the face surface of a plate is applied the oscillating pressure. The control problems involve the minimisation of quadratic cost functional depending on the velocity of vibration of the back surface of the plate and functional depending on the displacement of the back surface by using the adjustment of the neural network with the input signals as the voltages of sensors piezoelectric layers and the output signals as voltages applied to the actuators ceramic layers. The presented results are concerned with computer simulation of the proposed animated composite materials as joint mechanic, neural network and electronic system which has been named as the Matrix Electronic Materials (MEM). The results of modelling of elastic waves transformations have been shown an ability of MEM to suppress on the order the amplitudes of oscillations.

Keywords

smart materials, computer modelling, neural network control, laminated metal-ceramic plate, elastic waves transformation, suppression of oscillations.