N 



X 



> 



0.21 f- 



0.19 



0.17 



0.15 



0.13 



LU 

 _l 

 < 



O 

 if) 



> 0.11 



Z 

 LU 



O 0.09 



LU 

 DC 

 Li. 



0.07 



0.05 - 



UNPAIRED KEVLAR CABLE 



MEASUREMENT LOCATION 



FROM THE WEST END OF THE CABLE 



•r 6.1 m 



• 8.5 m 



V =6.5 



r 



0.20 



0.22 



0.24 



0.26 0.28 



0.30 



CURRENT VELOCITY, v/m/s 



Figure 3.16 Measured resonant frequencies of cable sirumming in the ocean (54) normalized by the factor [Ten- 

 sion]''^, plotted against the tidal current speed K Case one, •: Cable fundamental frequency, /„ = 2.7 Hz. Case two, 

 • — : Cable fundamental frequency, /„„ = 30 Hz. Cable properties same as Fig. 3.15. 



81 



