| 船舶靠泊过程中系缆作业仿真 |
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| 引用本文： | 代广树.船舶靠泊过程中系缆作业仿真[J].上海海事大学学报,2019,40(4):17-21. |
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| 作者姓名： | 代广树 |
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| 作者单位： | 天津海运职业学院航海技术系 |
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| 摘 要： | 为更加准确直观地模拟船舶靠泊过程中的系缆作业,将缆绳分为两部分进行建模。对缆机滚筒上的缆绳提出缠绕算法模型,计算出缆绳随着滚筒旋转的收放速度,实现使用滚筒收放缆绳的模拟。对缆机滚筒外的缆绳建立悬链线模型,计算出缆绳在不同工况下的形状和端点处的受力情况,并根据计算出的缆绳张力是否超出安全负荷对缆绳进行破断分析。根据船舶和码头形状确定碰撞检测区域,采用基于距离场的碰撞检测方法实现缆绳与船体、缆绳与码头之间的碰撞检测。通过模拟缆绳在系缆作业过程中的形状、位置和姿态变化,实现船舶靠泊过程中系缆作业的三维可视化。
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| 关 键 词： | 靠离泊 缆绳 系缆作业 悬链线 |
| 收稿时间： | 2019/1/2 0:00:00 |
| 修稿时间： | 2019/8/7 0:00:00 |
Simulation on tethering operation in process of ship berthing |
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| Institution: | Tianjin maritime college Dept. of Maritime Technology |
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| Abstract: | In order to simulate the tethering operation in the process of ship berthing more accurately and intuitively, the cable is divided into two parts for modeling. The winding algorithm model for the cable on the winch drum is established, and the cable retraction speed with the winch drum rotation is calculated to realize the cable retraction simulation on the drum. For the cable outside the winch drum, the catenary model is established, the shape and the stress at the cable end under different conditions are calculated, and the breaking analysis of the cable is carried out according to whether the cable tension exceeds the safety load. The collision detection area is determined according to the shapes of ships and wharves. The collision detections between the cable and the hull and between the cable and the wharf are carried out by the distance field based collision detection method. Through the simulation of the cable shape, position and attitude change in the tethering operation, the three dimensional visualization of the tethering operation in the process of ship berthing is realized. |
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| Keywords: | berthing and unberthing cable tethering operation catenary |
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