fig13

Figure 13. Analysis results of frequency domain and time domain under different fitting frequency bands of infinite domain water. (A) 0~10 Hz: (A-a) Parameter fitting result of cylinder in water; (A-b) Time history result of cylinder in water; (A-c) Infinite water domain frequency domain characteristic; (A-d) Water-structure interaction system frequency domain characteristic; (B) 0~15 Hz: (B-a) Parameter fitting result of cylinder in water; (B-b) Time history result of cylinder in water; (B-c) Infinite water domain frequency domain characteristic; (B-d) Water-structure interaction system frequency domain characteristic; (C) 0~20 Hz: (C-a) Parameter fitting result of cylinder in water; (C-b) Time history result of cylinder in water; (C-c) Infinite fluid domain frequency domain characteristic; (C-d) Fluid-structure interaction system frequency domain characteristic.