Dynamic response of piping system is significantly affected by plastic deformation. Based on the behavior classification of the pipe subjected to a steady axial force and a cyclic bending moment, the absorbed energy per semi-cycle due to plasticity is calculated for different elasto-plastic behavior. A new efficient piping dynamic response analysis method, plastic dissipation equivalent damping method, is proposed to consider the plastic effect on the basis of equivalence principle of energy dissipation. The proposed scheme is implemented in the finite element analysis code FEAP by introducing the equivalent damping which causes the same energy loss per semi-cycle. Numerical examples indicate that the results obtained by the present method show good agreements with those of elasto-plastic FEM analysis, and that this method can reduce the required computational effort significantly.
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25th International Conference on Offshore Mechanics and Arctic Engineering
June 4–9, 2006
Hamburg, Germany
Conference Sponsors:
- Ocean, Offshore, and Arctic Engineering Division
ISBN:
0-7918-4749-7
PROCEEDINGS PAPER
A New Approach of Piping Dynamic Response Considering Plastic Effect
Yanping Yao,
Yanping Yao
China Classification Society, Beijing, China
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Ming-Wan Lu,
Ming-Wan Lu
Tsinghua University, Beijing, China
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Xiong Zhang
Xiong Zhang
Tsinghua University, Beijing, China
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Yanping Yao
China Classification Society, Beijing, China
Ming-Wan Lu
Tsinghua University, Beijing, China
Xiong Zhang
Tsinghua University, Beijing, China
Paper No:
OMAE2006-92030, pp. 9-16; 8 pages
Published Online:
October 2, 2008
Citation
Yao, Y, Lu, M, & Zhang, X. "A New Approach of Piping Dynamic Response Considering Plastic Effect." Proceedings of the 25th International Conference on Offshore Mechanics and Arctic Engineering. Volume 4: Terry Jones Pipeline Technology; Ocean Space Utilization; CFD and VIV Symposium. Hamburg, Germany. June 4–9, 2006. pp. 9-16. ASME. https://doi.org/10.1115/OMAE2006-92030
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