Acta Mechanica Sinica

, Volume 14, Issue 1, pp 65–75 | Cite as

Limit and shakedown analysis of pressurized pipelines containing defects

  • Liu Yinghua
  • V. Carvelli
  • G. Maier


In this paper, the integrity assessment of pressurized pipelines containing defects is performed by direct simplified methods of limit and shakedown analysis. The defects considered are part-through slots of various geometrical configurations. The engineering situation considered here has practical importance in the pressure vessel and pipe industry. The results are compared with those obtained by a step-by-step procedure using the professional code ABAQUS and where possible, with those provided by semi-empirical formulae used in engineering. The simplified methods are found more economical and more reliable than marching solutions achieved by step-by-step evolutive elastic-plastic analysis. The effects of various part-through slots on the load-carrying capacities of pipelines are investigated.

Key Words

pipelines defects integrity assessment simplified methods 


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Copyright information

© Chinese Society of Theoretical and Applied Mechanics 1998

Authors and Affiliations

  • Liu Yinghua
    • 1
  • V. Carvelli
    • 2
  • G. Maier
    • 2
  1. 1.Department of Engineering MechanicsTsinghua UniversityBeijingChina
  2. 2.Department of Structural EngineeringPolitecnico di MilanoMilanoItaly

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