| 水下弹性缆索动力学分析 |
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| 引用本文： | 王延辉,李晓平,王树新,何漫丽.水下弹性缆索动力学分析[J].海洋工程,2005,23(3):55-59. |
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| 作者姓名： | 王延辉 李晓平 王树新 何漫丽 |
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| 作者单位： | 天津大学,机械工程学院,天津,300072;天津大学,机械工程学院,天津,300072;天津大学,机械工程学院,天津,300072;天津大学,机械工程学院,天津,300072 |
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| 摘 要： | 以水下弹性缆索为研究对象，分析了处理缆索弹性的段前弹簧模型，发展了缆索的多体有限段模型，提出弹性缆段模型，将多体运动力学和弹性力学结合起来，用于求解弹性缆索的动力学响应。对于水下缆索所受的流场力，推导了流场分布力的质心等效力系，并通过揭示水下缆索的附加质量与缆索自身惯性的本质联系，得到了包含附加质量力影响的水下弹性缆索的动力学方程。对工程实例进行了仿真研究，结果与实际情况吻合良好。
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| 关 键 词： | 弹性缆索 有限段 附加质量 水下 动力学分析 |
| 文章编号： | 1005-9865（2005）03-0055-05 |
| 收稿时间： | 2004-08-20 |
| 修稿时间： | 2004年8月20日 |
Dynamic analysis of underwater elastic cables |
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| Wang YanHui;Li XiaoPing;Wang ShuXin;He ManLi.Dynamic analysis of underwater elastic cables[J].Ocean Engineering,2005,23(3):55-59. |
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| Authors: | Wang YanHui;Li XiaoPing;Wang ShuXin;He ManLi |
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| Abstract: | As the underwater elastic cable is the research object, a spring-before-segment model for handling the elasticity of cables is studied. Then elastic segment model is set up, which develops the multi-body finite segment model of cables. It combines elastic mechanics with multibody dynamics and is used to obtain the dynamic response of elastic cables. As for the distributed fluid force of cables, its equivalent concentrated force and moment at the mass center is set out. And by bringing forth the deep relation between the added mass and inertia force of the cable itself, the dynamic equation of the marine elastic cable including the effect of the added mass is set up. Two engineering examples are simulated and the result is reasonable. |
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| Keywords: | elastic cable finite segment added mass under water dynamic analysis |
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