Evaluation of fatigue-ratcheting damage of a pressurised elbow undergoing damage seismic inputs

We present a simplified method to calculate the plastic ratchet of elbow-shaped pipes submitted to seismic loading and an internal pressure. This method is simplified in the sense that the value of the ratchet is obtained without the use of finite element method (FEM) calculations. Here we derive a...

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Bibliographic Details
Published inNuclear engineering and design Vol. 196; no. 1; pp. 41 - 50
Main Authors Dang Van, K., Moumni, Z.
Format Journal Article Conference Proceeding
LanguageEnglish
Published Amsterdam Elsevier B.V 01.01.2000
Elsevier
Subjects
Applied sciences
Energy
Energy. Thermal use of fuels
Engineering Sciences
Exact sciences and technology
Fatigue of materials
Finite element method
Fission nuclear power plants
Installations for energy generation and conversion: thermal and electrical energy
Mathematical models
Mechanics
Pipeline bends
Plastic deformation
Stainless steel
Steel pipe
Finite element method
Earthquake effect
Piping
Nuclear power plant
Fatigue strength
Stainless steel
Plasticity
Bended pipe
Pipe bend
Pipe
Modeling
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Summary:We present a simplified method to calculate the plastic ratchet of elbow-shaped pipes submitted to seismic loading and an internal pressure. This method is simplified in the sense that the value of the ratchet is obtained without the use of finite element method (FEM) calculations. Here we derive a formula and use it to evaluate the fatigue-ratcheting damage of an elbow. This approach is applicable to complex plastic response appropriately described by non-linear kinematics hardening, which is more realistic for stainless steel such as 316-L.
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ISSN:0029-5493
1872-759X
DOI:10.1016/S0029-5493(99)00229-0