Predictive plasticity unveiled: XFEM modeling of cyclic failure in pressurized straight pipelines under three-point bending DOI

N. Bencherif,

Amir Slamene, Billel Hamza

и другие.

Mechanics Based Design of Structures and Machines, Год журнала: 2024, Номер unknown, С. 1 - 25

Опубликована: Ноя. 28, 2024

This study presents an innovative numerical approach for predicting pressurized welded pipelines' cyclic behavior and failure mechanisms under complex loading conditions. Focusing on X52 steel pipelines subjected to internal pressure three-point bending, we investigate the interplay between structural integrity, weld joint positioning, boundary Our methodology integrates advanced finite element analysis with a sophisticated material model capturing isotropic kinematic hardening. The constitutive is calibrated using Voce model, accurately representing material's response. We employ von Mises yield criterion characterize multiaxial stress state within pipeline. A key innovation our application of eXtended Finite Element Method (XFEM) coupled hardening enabling high-fidelity simulation crack initiation propagation. model's predictive capabilities are rigorously validated against experimental data, demonstrating excellent agreement across various scenarios. Through comprehensive parametric studies, elucidate critical influences pressure, end-fixation conditions, locations pipeline's Force-displacement hysteresis curves reveal complex, nonlinear behaviors significantly impacting fatigue life modes. research advances understanding plasticity in pipelines, providing robust computational framework long-term performance. insights gained have far-reaching implications enhancing energy-transportation infrastructure's safety, reliability, longevity, potentially informing future design criteria regulatory guidelines.

Язык: Английский

Predicting damage and crack propagation in 3D locally functionally graded notched plates under strong cyclic loading using the FGM-USDFLD approach DOI
Billel Hamza, Amir Slamene, Rafik Medjahed

и другие.

Mechanics Based Design of Structures and Machines, Год журнала: 2025, Номер unknown, С. 1 - 26

Опубликована: Март 17, 2025

Язык: Английский

Процитировано

0
Novel FGM-USDFLD approach in Graded Cohesive Zone Modeling (GCZM): Predicting debonding and crack propagation in composite-patched notched plates DOI

Mourad Chama,

Djezouli Moulai-Khatir, Billel Hamza

и другие.

Mechanics of Advanced Materials and Structures, Год журнала: 2024, Номер unknown, С. 1 - 16

Опубликована: Авг. 14, 2024

This study uses a graded adhesive approach to investigate the efficacy of composite patch reinforcement on notched aluminum plate. The methodology employs volumetric fraction concept Functionally Graded Materials (FGM) develop Cohesive Zone Model (GCZM). A variable field, introduced through Fortran-based USDFLD subroutine, adapts formulation this GCZM. Patch debonding is simulated via damage using (CZM). At same time, crack initiation and propagation within plate are modeled Extended Finite Element Method (XFEM) implemented in ABAQUS finite element software. behavior characterized by triangular traction-separation law, with GCZM incorporating gradation both shear normal separation modes relative notch radius. compared against two non-graded cases, Araldite 420 AV138 adhesives, one case replicating previous study. Three concepts explored: C-1, where more resistant located at notch; C-2, extremity; C-3, it extremity. These configurations aim homogenize load transfer elucidate how different influence between reinforcement. By implementing USDFLD, work effectively demonstrates impact indices competition results provide valuable insights into optimizing properties for enhanced structural integrity composite-reinforced metallic structures.

Язык: Английский

Процитировано

3
Damage investigation in steel pipe under pressure and combined bending moment: Application in structure connected by elbow and reduced tee DOI
Djezouli Moulai-Khatir, Billel Hamza, Amir Slamene

и другие.

Mechanics Based Design of Structures and Machines, Год журнала: 2024, Номер 53(3), С. 1736 - 1759

Опубликована: Авг. 23, 2024

Steel tubular structures in pipelines, or those connections such as concentric reductions, reduced tees, and elbows, all differ their response to loading, they are sometimes solicited complex combined loads, which accumulate with the internal pressure solicitation cause certain situation damage, objective this analysis is numerically predict mechanical behavior until damage of a complete structure, contains connecting elements an elbow tee attached each other by straight parts, its standardized dimensions presents real design main pipeline spigot for possible supply line, structure analyzed work under these conditions, loads probably coming from weight valve, pipe flanged element other, X60 steel This different modes loading. The elastic-plastic Voce's model Von Mises' equivalent stress flow theory, crack initiation propagation ensured using XFEM technique, up evaluated effect parameters loading mode, we present angular bendingrotation moment curves that clearly condition level damage.

Язык: Английский

Процитировано

2
Predictive plasticity unveiled: XFEM modeling of cyclic failure in pressurized straight pipelines under three-point bending DOI

N. Bencherif,

Amir Slamene, Billel Hamza

и другие.

Mechanics Based Design of Structures and Machines, Год журнала: 2024, Номер unknown, С. 1 - 25

Опубликована: Ноя. 28, 2024

This study presents an innovative numerical approach for predicting pressurized welded pipelines' cyclic behavior and failure mechanisms under complex loading conditions. Focusing on X52 steel pipelines subjected to internal pressure three-point bending, we investigate the interplay between structural integrity, weld joint positioning, boundary Our methodology integrates advanced finite element analysis with a sophisticated material model capturing isotropic kinematic hardening. The constitutive is calibrated using Voce model, accurately representing material's response. We employ von Mises yield criterion characterize multiaxial stress state within pipeline. A key innovation our application of eXtended Finite Element Method (XFEM) coupled hardening enabling high-fidelity simulation crack initiation propagation. model's predictive capabilities are rigorously validated against experimental data, demonstrating excellent agreement across various scenarios. Through comprehensive parametric studies, elucidate critical influences pressure, end-fixation conditions, locations pipeline's Force-displacement hysteresis curves reveal complex, nonlinear behaviors significantly impacting fatigue life modes. research advances understanding plasticity in pipelines, providing robust computational framework long-term performance. insights gained have far-reaching implications enhancing energy-transportation infrastructure's safety, reliability, longevity, potentially informing future design criteria regulatory guidelines.

Язык: Английский

Процитировано

0