ISSN: 2250-3005 - ijcer

Greška [%]International Journal Of Computational Engineering Research (ijceronline.com) Vol. 2 Issue. 8puc - 81,1683 43,9205 s0 0,5592080.2 0,59908 l 2,02987 s 0,01326280.2l 0,860965 s0l 0,00514024 s00.2l(6)The figure 9 shows the best evolution solution (i.e. the best mathematical model for the fluid pressure in the tube), over thegenerations. The solution improvement in the initial phase was rapidly, and after the generation of 100, relatively s mallsolution improving has been perceived.00.23025201510501 10 100 1000 10000GeneracijaFigure 9: Improvement of the best generation solutions3. 3. Comparative results of the experimental values by the GA modelExperimental researches of the T tube hydroforming process parameters, the values for the defined outerparameter are obtained, i.e. tube fluid pressure (p uc ). These values are compared with the values (p uc ) obtained by the GAmodel, Table 3.Table 3: Comparative data of the experimental and obtained GA model valuesNumberofexp.Input values ofparametersOutput valuesGA modelNjs 0 l p uc p ucmm N/mm 2 mm bar bar1 1 164 10 432 432,14242 3 164 10 1220 1219,86013 1 412 10 1120 1119,87334 3 412 10 2940 2939,90215 1 164 20 477 476,92396 3 164 20 1298 1298,72087 1 412 20 1210 1210,29438 3 412 20 3090 3089,89799 2 290 15 1603.750 1483,3960The mean percentage deviation within experimental and prediction values, obtained by the GA model is Δi = 0.85148%.||Issn 2250-3005(online) || |December| 2012 Page 278