Finite Element Simulations of Dynamic Fracture of Full-Scale Gas Transmission Pipelines

【Author】

Peishi Yu;Jinjie Lv;Junhua Zhao;Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, School of Mechanical Engineering, Jiangnan University;

【Institution】

Jiangsu Key Laboratory of Advanced Food Manufacturing Equipment and Technology, School of Mechanical Engineering, Jiangnan University;

【Abstract】

The dynamic crack growth in a full-scale gas pipeline of API X80 steel is analyzed using the finite element method with the cohesive zone model. Based on the simulation, it is revealed that for the moderate steady-state crack growth, the crack-tip-opening angle strongly depends on the crack growth speed. In addition, the threshold initial crack sizes under different internal pressures are analyzed, which show a significant three-dimensional effect due to the wall thickness of the pipeline. The presented model offers a feasible way to study some details of the dynamic fracture of full-scale pipelines when tests are difficult or expensive.

【Keywords】

Dynamic fracture;;Finite element;;Full-scale pipeline;;Cohesive zone model

References

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Springer Journals Database

Total: 42 articles

  • [1] Sang Yong Shin;;Byoungchul Hwang;;Sunghak Lee;;Nack J. Kim;;Seong Soo Ahn, Correlation of microstructure and charpy impact properties in API X70 and X80 line-pipe steels, Materials Science & Engineering A,
  • [2] Lin Xia;;C.Fong Shih, Ductile crack growth—II. Void nucleation and geometry effects on macroscopic fracture behavior, Journal of the Mechanics and Physics of Solids,
  • [3] C.R. Chen;;O. Kolednik;;J. Heerens;;F.D. Fischer, Three-dimensional modeling of ductile crack growth: Cohesive zone parameters and crack tip triaxiality, Engineering Fracture Mechanics,
  • [4] A rate-dependent cohesive model for simulating dynamic crack propagation in brittle materials, Engineering Fracture Mechanics,

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