Genetic-algorithm-based procedure for pretest analysis

The comparison of results predicted by the SH and CL theories shows that differences between them increase with the increase of relative thickness, as well as with a rise in the number of an eigenmode (Figs. 1 and 2). For example, for the 0/90/0 lamination with hi/h = 0.4 and h/a = 0.15, the frequency ratio associated with the first vibrational mode &$/ Q^jf= 1.16, whereas for the second mode fijjjjy ^H — 1-56 (see Fig. la, graphs 2 and 4 and graphs 7 and 8). The convergence of SH and CL results is observed with an increase in 0 (Figs. 2a and 2b).

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