14. starptautiskā konference 2012 - Latvijas Jūras akadēmija

Proceedings of 14th International conference „Maritime Transport and Infrastructure - 2012”40 Y3530252015Series1Series210501 3 5 7 9 11 13 15 17 19 21XFig. 1. The graph of tension (Series2) and the empirical curve (Series1)114,8001k 42,01b 49,0632; 42,01 k 21 b 44,8381.(8)b = 4,788; k = -1,32; a = 118,84 is obtained solving the system (8) and the empirical formulais written:y 1,32t118 ,84te. (9)The empirical curve (Fig. 1, Series1) sufficiently corresponds to the experimental curve(Series2).The selection of the type of function depends on the mathematical method that will be used forfurther process analysis.Whereas the process is not periodis, instead of Fourier row Fourier integral is used. Fourierkttransformation is used for the analyse of the results [1]. For the function f t y ate it is:aFj . (10)j k 2The expression F(jω) is called the spectral density. To draw the hodograph of the complexfunction, the real and the imaginary parts are found in Corteison coordinate system Oxy:aj k2 x jy . ak22ja2k2 2 22 2k k x jy . (11)And the paramteric equations of hodograph are written:2 2 k x a2 2k 2ky a2 2 k .where - parameter.22;.(12)77