| Model Simplification and Parameter Modification for Offshore Platforms Using Experiment Data |
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| 作者单位： | Xu Bin
Tian Qianli Research Associate，Institute of Mechanics，Chinese Academy of Sciences，Beijing 100080 Professor，Institute of Mechanics，Chinese Academy of Sciences，Beijing 100080 |
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| 摘 要： | - In this paper, a computation method has been developed so as to compare the finite element method (FEM) with the test results directly. The structure is divided into the "master" and "slave" degrees of freedom. The simplified model can be obtained with modal reduction. Then the design sensitivity analysis of the eigenvalues and eigenvectors has been carried out using the modal frequency and modal shape of the test. A two-story frame structure and a jacket model structure have been calculated. Meanwhile, the modified coefficient, the FEM computational and experimental values have been given. It has been shown that the FEM model modified using the test modal value is efficient.
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Model Simplification and Parameter Modification for Offshore Platforms Using Experiment Data |
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| Authors: | Xu Bin Tian Qianli Research Associate |
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| Institution: | Xu Bin
Tian Qianli Research Associate,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080 Professor,Institute of Mechanics,Chinese Academy of Sciences,Beijing 100080 |
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| Abstract: | - In this paper, a computation method has been developed so as to compare the finite element method (FEM) with the test results directly. The structure is divided into the "master" and "slave" degrees of freedom. The simplified model can be obtained with modal reduction. Then the design sensitivity analysis of the eigenvalues and eigenvectors has been carried out using the modal frequency and modal shape of the test. A two-story frame structure and a jacket model structure have been calculated. Meanwhile, the modified coefficient, the FEM computational and experimental values have been given. It has been shown that the FEM model modified using the test modal value is efficient. |
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| Keywords: | offshore plat form parameter modification finite element method sensitiving analysis eigenvalue eigenvector |
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