Curvilinear Crack Growth and Remaining Life Prediction of Aluminum Weldment Using X-FEM

Lua, Jim; Shi, Jianxu; Liu, Philip L.‐F.; Collette, Matthew

doi:10.2514/6.2008-1839

Cited by 3 publications

(4 citation statements)

References 12 publications

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“…Virtually all structural solvers can efficiently deal with multiple loads cases, as this is a common situation in practice. The implementation is thus considerably simpler than those based on user element libraries [25,26,36,53,54,64,65], a feature not available in all structural analysis solvers. From the user stand point, the proposed two-solver algorithm is also more convenient than those based on user elements.…”

Section: Discussionmentioning

confidence: 99%

“…Giner et al [25,26] proposed an Abaqus implementation of 2-D XFEM aimed at the simulation of fretting fracture crack propagation. We can also mention the Abaqus implementations of Lua et al [36] for curvilinear crack growth and life prediction based on XFEM; Xu and Yuan [64,65] for mixed-mode fatigue crack growth in quasi-brittle materials; and the XFEM toolkit of Shi et al [53] for automated crack onset and crack growth prediction. These implementations are based on user element libraries added to Abaqus.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Analysis of three-dimensional fracture mechanics problems: A non-intrusive approach using a generalized finite element method

Gupta

Pereira

Kim

et al. 2012

Engineering Fracture Mechanics

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Kim, D J.; Duarte, C A.; and Eason, T, "Analysis of three-dimensional fracture mechanics problems: A nonintrusive approach using a generalized finite element method" (2012 (structural) and local (crack) scale problems. In the approach presented here, an initial global scale problem is solved by a commercial finite element analysis software, local problems containing 3-D fractures are solved by an hp-adaptive GFEM software and an enriched global scale problem is solved by a combination of the FEM and GFEM softwares. The interactions between the solvers are limited to the exchange of load and solution vectors and does not require the introduction of user subroutines to existing FEM software. As a results, the user can benefit from built-in features of available commercial grade FEM software while adding the benefits of the GFEM for this class of problems. Several threedimensional fracture mechanics problems aimed at investigating the applicability and accuracy of the proposed two-solver methodology are presented.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

Analysis of three-dimensional fracture mechanics problems: A non-intrusive approach using a generalized finite element method

Gupta

Pereira

Kim

et al. 2012

Engineering Fracture Mechanics

View full text Add to dashboard Cite

show abstract

“…The geometry of the specimen is shown in Figure 7. For the fatigue crack growth prediction, the Paris law is used with the parameters C = 4.5E-10, m = 2.1 as defined in Eqn (25), and the fatigue growth threshold value ∆ th = 11.6 MPa m .…”

Section: Mesh Sensitivity Study Of a Miss-hole Compact Test Specimen mentioning

confidence: 99%

“…Indeed, another 2D X-FEM was implemented as an add-on library kit for Abaqus ) that works seamlessly with the commercial, off-the-shelf (COTS) version of Abaqus/Standard and Abaqus/CAE for automated crack onset and growth. This 2D version was applied to fatigue life prediction considering residual stresses in Lua et al (2008) and composite joints reliability assessment in Lua et al (2009).…”

Section: Introductionmentioning

confidence: 99%

Abaqus implementation of extended finite element method using a level set representation for three-dimensional fatigue crack growth and life predictions

Shi

Chopp

Lua

et al. 2010

Engineering Fracture Mechanics

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184

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A three-dimensional extended finite element method (X-FEM) coupled with a narrow band fast marching method (FMM) is developed and implemented in the Abaqus finite element package for curvilinear fatigue crack growth and life prediction analysis of metallic structures. Given the level set representation of arbitrary crack geometry, the narrow band FMM provides an efficient way to update the level set values of its evolving crack front. In order to capture the plasticity induced crack closure effect, an element partition and state recovery algorithm for dynamically allocated Gauss points is adopted for efficient integration of historical state variables in the near-tip plastic zone. An element-based penalty approach is also developed to model crack closure and friction. The proposed technique allows arbitrary insertion of initial cracks, independent of a base 3D model, and allows non-self-similar crack growth pattern without conforming to the existing mesh or local remeshing. Several validation examples are presented to demonstrate the extraction of accurate stress intensity factors for both static and growing cracks. Fatigue life prediction of a flawed helicopter lift frame under the ASTERIX spectrum load is presented to demonstrate the analysis procedure and capabilities of the method.

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Numerical residual strength prediction of stationary shoulder friction stir welding structures

Scheider

Barbini

Santos

2020

Engineering Fracture Mechanics

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Curvilinear Crack Growth and Remaining Life Prediction of Aluminum Weldment Using X-FEM

Cited by 3 publications

References 12 publications

Analysis of three-dimensional fracture mechanics problems: A non-intrusive approach using a generalized finite element method

Analysis of three-dimensional fracture mechanics problems: A non-intrusive approach using a generalized finite element method

Abaqus implementation of extended finite element method using a level set representation for three-dimensional fatigue crack growth and life predictions

Numerical residual strength prediction of stationary shoulder friction stir welding structures

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