Chinese Journal of Ship Research, Volume. 20, Issue 2, 187(2025)
SVR-based identification of nonlinear roll motion of trimaran
Figures & Tables(12)
Fig. 6. Nonlinear characteristic of moment on left hull inside (, )三体船片体内侧所受力矩时历与频域曲线（, ）
Fig. 8. SVR-identified damping coefficients at varying frequencies ()不同频率下横摇阻尼辨识结果（）
Fig. 9. Identified hydrodynamic coefficients of different
Table 1. Principal particulars of trimaran
View tableView in ArticleTable 1. Principal particulars of trimaran
参数 主体 侧体 水线间长L/m 3.250 1.125 型宽B/m 0.225 0 0.050 3 吃水T/m 0.112 5 0.046 9 质量m/kg 34.873 1.138 重心纵向位置zg/m 0.067 5 CL 1.056/1.333/1.611
Table 2. Mesh division
View tableView in ArticleTable 2. Mesh division
区域 网格数量 细网格 ( ${G_1}$ 中等网格 ( ${G_2}$ 粗网格 ( ${G_3}$ 重叠区域 328.90×104 140.40×104 60.90×104 背景区域 167.34×104 64.50×104 24.17×104
Table 3. Identified parameters of roll motion equation
View tableView in ArticleTable 3. Identified parameters of roll motion equation
参数 真实值 辨识值 误差/% A 0.002 58 0.002 54 1.292 0 C 0.004 40 0.004 10 7.997 0 R1 0.395 00 0.394 90 0.034 0 R3 0.634 80 0.634 50 0.046 1 fcos 0.019 28 0.019 21 0.366 1 fsin 0 0.000 52
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Yue GU, Renchuan ZHU, Chuanqing LI, Chengyu WU. SVR-based identification of nonlinear roll motion of trimaran[J]. Chinese Journal of Ship Research, 2025, 20(2): 187
Paper Information
Category: Ship Design and Performance
Received: Oct. 7, 2023
Accepted: --
Published Online: May. 15, 2025
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