| 海洋平台水动力系数识别及精度分析 |
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| 引用本文： | 李少华, 时忠民, 龙述尧, 丁桦. 海洋平台水动力系数识别及精度分析[J]. 固体力学学报, 2011, 32(4): 405-410. |
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| 作者姓名： | 李少华 时忠民 龙述尧 丁桦 |
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| 作者单位： | 湖南大学机械与运载工程学院,长沙,410082;西安科技大学力学系,西安,710054; 中海石油研究中心,北京,100027; 湖南大学机械与运载工程学院,长沙,410082; 中国科学院力学研究所,北京,100190 |
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| 摘 要： | 论文利用新动态模型减缩方法对海洋平台结构进行自由度减缩,利用简化后的模型对水动力系数进行反演,改善了反演模型中解的不确定性,并对载荷反演中的病态问题进行了探讨,同时给出了反演结果的评估方法,为反演中测量数据的获取提供了依据,提高了反演结果的可靠性.
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| 关 键 词： | 水动力系数反演 病态 动态模型减缩 自由度减缩 |
| 收稿时间： | 2010-03-05 |
IDENTIFICATION OF HYDRODYNAMIC COEFFICIENTS ON OFFSHORE PLATFORM AND PRECISION ANALYSIS OF ITS RESULTS |
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| Shaohua Li, Zhongmin Shi, Shuyao Long, Hua Ding. IDENTIFICATION OF HYDRODYNAMIC COEFFICIENTS ON OFFSHORE PLATFORM AND PRECISION ANALYSIS OF ITS RESULTS[J]. Chinese Journal of Solid Mechanics, 2011, 32(4): 405-410. |
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| Authors: | Shaohua Li Zhongmin Shi Shuyao Long Hua Ding |
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| Affiliation: | Shaohua Li1,2 Zhongmin Shi3 Shuyao Long1 Hua Ding4(1College of Mechanical and Vehicle Engineering,Hunan University,Changsha,410082)(2Department of Mechanics,Xi'an University of Science and Technology,Xi'an,710054)(3Research Center,Ocean Oil Co.,Beijing,100027)(4Institute of Mechanics,Chinese Academy of Sciences,100190) |
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| Abstract: | The degrees of freedom of the offshore platform structure are reduced by applying a new dynamic model reduction in this paper.Based on the simplified model,the hydrodynamic coefficients are identified.And the uncertainty of the solution in inverse problem is improved.The ill-conditioned problem in identification of force is subsequently discussed and the assessment method of the identification result is also presented,which provides a basis for acquiring the measurement data for identification and contribut... |
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| Keywords: | identification of hydrodynamic coefficients ill-conditioned dynamic model reduction reduction of the degrees of freedom |
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