| Elasto-Plastic Analysis of Tubular Joints of Offshore Platforms by Finite Element Method |
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| 作者单位： | Chen Tieyun Zhu Zhenghong
Professor，Dept. of Naval Architecture and Ocean Engineering，Shanghai Jiao Tong University，Shanghai Lecturer，Institute of Rail-Wheel System，Shanghai Institute of Railway Technology，Shanghai |
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| 摘 要： | The plastic node method is reformulated by the variational principle and is applied to elasto-plastic finite element analysis of tubular joints, eventually including the effect of internal and external gussets, stiffener rings, etc., if necessary. Four different joints are studied here in detail for the elasto-plastic behavior, the strain at the hot spot, the strain concentration factor around the intersection line, and the propagation of the plastic region with loading up to collapse in order to determine the ultimate strength, safety factor, and development of the plastic field. The present results are in good agreement with the experimental results.
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Elasto-Plastic Analysis of Tubular Joints of Offshore Platforms by Finite Element Method |
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| Authors: | Chen Tieyun Zhu Zhenghong
Professor Dept of Naval Architecture and Ocean Engineering Shanghai Jiao Tong University Shanghai Lecturer |
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| Institution: | Chen Tieyun Zhu Zhenghong
Professor,Dept. of Naval Architecture and Ocean Engineering,Shanghai Jiao Tong University,Shanghai Lecturer,Institute of Rail-Wheel System,Shanghai Institute of Railway Technology,Shanghai |
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| Abstract: | The plastic node method is reformulated by the variational principle and is applied to elasto-plastic finite element analysis of tubular joints, eventually including the effect of internal and external gussets, stiffener rings, etc., if necessary. Four different joints are studied here in detail for the elasto-plastic behavior, the strain at the hot spot, the strain concentration factor around the intersection line, and the propagation of the plastic region with loading up to collapse in order to determine the ultimate strength, safety factor, and development of the plastic field. The present results are in good agreement with the experimental results. |
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| Keywords: | plastic node method finite element tubular joint strain concentration factor |
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