Numerical simulation of fatigue crack growth in friction stir welded T joint made of Al 2024 T351 alloy

Kredegh, Abubakr; Sedmak, Aleksandar; Grbović, Aleksandar; Milosevic, Nenad; Danicic, Darko

doi:10.1016/j.prostr.2016.06.383

Cited by 13 publications

(11 citation statements)

References 2 publications

Supporting

Mentioning

Contrasting

Order By: Relevance

“…It should be mentioned that there are also several studies where XFEM was used for simulating 3D fatigue crack propagations, but only with 1 crack. 179,180 Now, we focus our attention on series of papers on XFEM application published recently by Grbovic and coworkers, which deserves to be named "Belgrade school of XFEM simulation", [179][180][181][182][183][184][185][186][187][188][189] starting with an analysis of fatigue crack growth in a CCT specimen.…”

Section: Application Of Xfem To Fatigue Crack Growth Simulationmentioning

confidence: 99%

“…ABAQUS defines initial crack as a separate entity with no element mesh and the first step in 3D analysis of crack propagation is crack "opening", followed by calculation of stresses. 179 Morfeo/Crack for ABAQUS 190 uses ABAQUS solutions to calculate stress intensity factors in nodes of the crack front and generates a file with K I , K II , and K III results. Then, the equivalent stress intensity factor K eq , which combines all 3 SIF modes, is calculated as well as the kink angle (crack propagation angle) which defines the direction in which crack will be propagated in a next step.…”

Section: Fatigue Life Estimation Of Cct Specimenmentioning

confidence: 99%

See 1 more Smart Citation

Computational fracture mechanics: An overview from early efforts to recent achievements

Sedmak

2018

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

An overview of the state of the art of computational fracture mechanics is presented, starting from early efforts and going all the way up to recent achievements. Some specific aspects of linear elastic and elastic plastic fracture mechanics problems have been discussed, including the fact that even for a static loading, numerical simulation is not a simple task because of complex geometries, material nonlinearity, and heterogeneity, and especially if crack growth is considered. Therefore, micromechanical modelling of elastic‐plastic crack growth is presented as new and promising approach to overcome some of the shortages of traditional approach. Besides static loading, couple of other important practical problems are tackled, like fatigue crack growth, with remaining life in the focus of investigation, using the empirical laws for crack growth rates. Numerical simulation of fatigue crack growth is inherently complex both because of complex material damage processes and lack of sound theoretical basis to define them. Therefore, combination of theoretical, experimental, and numerical approach is presented here to get reliable and efficient estimation of life under fatigue loading.

show abstract

Section: Application Of Xfem To Fatigue Crack Growth Simulationmentioning

confidence: 99%

Section: Fatigue Life Estimation Of Cct Specimenmentioning

confidence: 99%

Computational fracture mechanics: An overview from early efforts to recent achievements

Sedmak

2018

Fatigue Fract Eng Mat Struct

View full text Add to dashboard Cite

show abstract

“…The body heat source with uniformly distributed heat flux was set at the stirring pin [ 34 , 35 , 36 ]. The heat flux of the body source, q, can be calculated as:

where V is the insertion volume of the tapered stirring pin.…”

Section: Methodsmentioning

confidence: 99%

Effect of Stirring Pin Rotation Speed on Microstructure and Mechanical Properties of 2A14-T4 Alloy T-Joints Produced by Stationary Shoulder Friction Stir Welding

Yang

Zhao

et al. 2021

Materials

View full text Add to dashboard Cite

In this study, 2A14-T4 Al-alloy T-joints were prepared via stationary shoulder friction stir welding (SSFSW) technology where the stirring pin’s rotation speed was set as different values. In combination with the numerical simulation results, the macro-forming, microstructure, and mechanical properties of the joints under different welding conditions were analyzed. The results show that the thermal cycle curves in the SSFSW process are featured by a steep climb and slow decreasing variation trends. As the stirring pin’s rotation speed increased, the grooves on the weld surface became more obvious. The base and rib plates exhibit W- or N-shaped hardness distribution patterns. The hardness of the weld nugget zone (WNZ) was high but was lower than that of the base material. The second weld’s annealing effect contributed to the precipitation and coarsening of the precipitated phase in the first weld nugget zone (WNZ1). The hardness of the heat affect zone (HAZ) in the vicinity of the thermo-mechanically affected zone (TMAZ) dropped to the minimum. As the stirring pin's rotation speed increased, the tensile strengths of the base and rib plates first increased and then dropped. The base and rib plates exhibited ductile and brittle/ductile fracture patterns, respectively.

show abstract

“…During the FSW process, the bigger pin diameter increased axial force, traverse force, and maximum heat generation [26,27]. Instead, the larger tool pin diameter decreases the fatigue strength of the FSWed joint and decreases the mechanical properties of the dissimilar joint between aluminum and steel [28]. Among various geometrical parameters of the FSW tool, the pin trapped angle plays an important role.…”

Section: Introductionmentioning

confidence: 99%

Pin Angle Thermal Effects on Friction Stir Welding of AA5058 Aluminum Alloy: CFD Simulation and Experimental Validation

et al. 2021

View full text Add to dashboard Cite

The friction stir welding (FSW) of tool pin geometry plays a critical role in the final properties of the produced joint. The tool pin geometry directly affects the generation of heat and the flow of internal materials during the FSW process. The effects of the FSW tool pin angle on heat generation and internal flow have not been quantitatively investigated in detail. In this manuscript, a validated Computational Fluid Dynamic (CFD) model was implemented to analyze the effects of pin angle on the thermo-mechanical action during the FSW process of AA5058 Al-Mg alloy. Experimental test results validate the thermal outcomes of the used model. The obtained results revealed that, when the pin angle is increased, the heat generation decreases while the mechanical action of the tool increases. The internal heat distribution at a higher pin angle is symmetrical. The higher mechanical action of the tool decreases the viscosity of the internal materials and increases stirring action (materials flow) around the pin. Furthermore, plastic flow near the tool increased stirring action and formed a larger stir zone in the joint area.

show abstract

Numerical simulation of fatigue crack growth in friction stir welded T joint made of Al 2024 T351 alloy

Cited by 13 publications

References 2 publications

Computational fracture mechanics: An overview from early efforts to recent achievements

Computational fracture mechanics: An overview from early efforts to recent achievements

Effect of Stirring Pin Rotation Speed on Microstructure and Mechanical Properties of 2A14-T4 Alloy T-Joints Produced by Stationary Shoulder Friction Stir Welding

Pin Angle Thermal Effects on Friction Stir Welding of AA5058 Aluminum Alloy: CFD Simulation and Experimental Validation

Contact Info

Product

Resources

About