| Effect of Longitudinal Plastic Bending of Pipeline on Buckle Propagation Pressure |
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| 摘 要： | A plastic ring-beam model simulating the longitudinal transition zone of submarine pipelines in the buckle propagation is presented. The nonlinear relationships between the buckle propagation pressure and the length of the transition zone and the position parameter of the longitudinal plastic hinge are derived using the energy principle. The related values are obtained by means of solving a set of nonlinear equations. The model conforms better to reality than the ring models for considering the effect of the longitudinal plastic bending of the transition zone. The computations for some stainless steel and aluminium tubes with different geometrical parameters are performed. The results obtained agree better with the experimental results than existing theoretical predictions.
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Effect of Longitudinal Plastic Bending of Pipeline on Buckle Propagation Pressure |
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| Authors: | Zhu Dashan Huang Yuying Cheng Jiangtian
Asso Prof Dept of Mechanics Huazhong University of Science and Technology |
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| Abstract: | A plastic ring-beam model simulating the longitudinal transition zone of submarine pipelines in the buckle propagation is presented. The nonlinear relationships between the buckle propagation pressure and the length of the transition zone and the position parameter of the longitudinal plastic hinge are derived using the energy principle. The related values are obtained by means of solving a set of nonlinear equations. The model conforms better to reality than the ring models for considering the effect of the longitudinal plastic bending of the transition zone. The computations for some stainless steel and aluminium tubes with different geometrical parameters are performed. The results obtained agree better with the experimental results than existing theoretical predictions. |
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| Keywords: | buckle propagation submarine pipeline plastic buckling pipeline cylindrical shell |
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