Plastic failure analysis of defective pipes with creep damage under multi-loading systems

Du, Xiuli; Zhang, Jie; Liu, Yinghua

doi:10.1016/j.ijmecsci.2017.04.028

Cited by 12 publications

(3 citation statements)

References 52 publications

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“…Some scholars have separately analyzed the failure behavior of SP LWT under the bending moment, and researched the influence of defect size on the limit bending moment of pipes [8][9][10]. Furthermore, many scholars have analyzed the limit load and failure mode of SP LWT under the combination of internal pressure and bending moment via numerical and experimental methods [11,12]. The limit load equations of SP LWT under internal pressure, bending moment, and their combinations are contained in the existing evaluation standards for local wall-thinning pipes, such as ASME B31G [13], API 579 [14], and GB/T 19624-2019 [15].…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of the Limit Load of Straight Pipes with Local Wall-Thinning Defects under Complex Loads

Gao

Liu

et al. 2022

Applied Sciences

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Local wall thinning is a common defect on the surface of pipelines, which can cause damage to the pipeline under complex pipeline loads. Based on the study on the limit load of straight pipes with defects, the nonlinear finite element method was used to analyze the limit load of straight pipes with local wall-thinning defects under internal pressure, bending moment, torque, axial force, and their combinations, and the empirical limit-load equations of straight pipes with local wall-thinning defects under single and complex loads were fitted. Based on the allowable load on the equipment nozzles, the influences of torque and axial force on the load-bearing capacity of straight pipes with local wall-thinning defects were quantitatively analyzed. For medium and low-pressure equipment, the load-bearing capacity was reduced by 0.59~1.44% under the influence of torque, and by 0.83~1.80% under the influence of axial force. For high-pressure equipment, the load-bearing capacity was reduced by 10.07~20.90% under the influence of torque, and by 2.01~12.40% under the influence of axial force.

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Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of the Limit Load of Straight Pipes with Local Wall-Thinning Defects under Complex Loads

Gao

Liu

et al. 2022

Applied Sciences

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“…In general, the creep rupture analysis of a component can be performed by simulating the evolution of material deterioration under the given operating condition through creep damage models [6][7][8]. In recent years, some researchers [9][10][11][12][13] have conducted plastic failure analysis considering creep damage or creep rupture analysis to calculate the plastic limit load or ultimate creep load of pressure vessels with various volumetric defects at elevated temperature. It is noted that these numerical procedures require to conduct the full elastic-plastic creep analysis throughout the entire loading history and to know the detailed creep constitutive model and parameters.…”

Section: Introductionmentioning

confidence: 99%

Creep rupture assessment of cyclically heated 3D pressure pipelines with volumetric defects using a direct numerical approach

Peng

Liu

Chen

2021

International Journal of Pressure Vessels and Piping

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“…Due to its outstanding characteristics, this material has been extensively investigated in the past few years. The research has mainly focused on the thermomechanical processing of the microstructure under high temperature, which determines the high-temperature creep and fatigue performance in both thermal and nuclear power-generation applications [1][2][3][4][5][6][7][8][9].…”

Section: Introductionmentioning

confidence: 99%

An Incremental Physically-Based Model of P91 Steel Flow Behaviour for the Numerical Analysis of Hot-Working Processes

Murillo-Marrodán

Puchi-Cabrera

García

et al. 2018

Metals

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This paper is aimed at modelling the flow behaviour of P91 steel at high temperature and a wide range of strain rates for constant and also variable strain-rate deformation conditions, such as those in real hot-working processes. For this purpose, an incremental physically-based model is proposed for the P91 steel flow behavior. This formulation considers the effects of dynamic recovery (DRV) and dynamic recrystallization (DRX) on the mechanical properties of the material, using only the flow stress, strain rate and temperature as state variables and not the accumulated strain. Therefore, it reproduces accurately the flow stress, work hardening and work softening not only under constant, but also under transient deformation conditions. To accomplish this study, the material is characterised experimentally by means of uniaxial compression tests, conducted at a temperature range of 900-1270 • C and at strain rates in the range of 0.005-10 s −1. Finally, the proposed model is implemented in commercial finite element (FE) software to provide evidence of the performance of the proposed formulation. The experimental compression tests are simulated using the novel model and the well-known Hansel-Spittel formulation. In conclusion, the incremental physically-based model shows accurate results when work softening is present, especially under variable strain-rate deformation conditions. Hence, the present formulation is appropriate for the simulation of the hot-working processes typically conducted at industrial scale.

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Plastic failure analysis of defective pipes with creep damage under multi-loading systems

Cited by 12 publications

References 52 publications

Finite Element Analysis of the Limit Load of Straight Pipes with Local Wall-Thinning Defects under Complex Loads

Finite Element Analysis of the Limit Load of Straight Pipes with Local Wall-Thinning Defects under Complex Loads

Creep rupture assessment of cyclically heated 3D pressure pipelines with volumetric defects using a direct numerical approach

An Incremental Physically-Based Model of P91 Steel Flow Behaviour for the Numerical Analysis of Hot-Working Processes

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