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海洋平台水动力系数识别及精度分析

IDENTIFICATION OF HYDRODYNAMIC COEFFICIENTS ON OFFSHORE PLATFORM AND PRECISION ANALYSIS OF ITS RESULTS

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【作者】 李少华时忠民龙述尧丁桦

【Author】 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,Beijing,100190)

【机构】 湖南大学机械与运载工程学院西安科技大学力学系中海石油研究中心中国科学院力学研究所

【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.

【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 contributes to the improvement of reliability of the identification result.

  • 【文献出处】 固体力学学报 ,Chinese Journal of Solid Mechanics , 编辑部邮箱 ,2011年04期
  • 【分类号】P75
  • 【被引频次】1
  • 【下载频次】147
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