XFEM Modelling of Multi-holes Plate with Single-row and Staggered Holes Configurations

Supar, Khairi; Ahmad, Hishamuddin

doi:10.1051/matecconf/201710302031

Cited by 5 publications

(5 citation statements)

References 8 publications

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“…In variation to plate thickness, thicker plates, PX4 gives better agreement to experimental results (less than 8% discrepancy) than PX2 lay-ups counterparts. Similar finding was found in Supar & Ahmad [6] where better strength prediction in thicker unidirectional GFRP plates. Composite materials comprised of different stacking orientation layers, current approach implemented smeared-out properties which is more representative in thicker plates, therefore better strength prediction in cross-ply lay-ups is not surprising.…”

Section: Validation Of Fea Resultssupporting

confidence: 89%

“…Emerging computing technology enables the material designer to predict the strength of engineering materials by using numerical approaches. A benchmarking work based on experimental framework by Cunningham et al [5] has been carried out in twodimensional finite element analysis using extended finite element method (XFEM) approach [6]. Reasonably good agreement to experimental results were found, but the fracture energy value used by the respective authors [6] was taken from woven fabric GFRP plates.…”

Section: Introductionmentioning

confidence: 99%

See 1 more Smart Citation

Multi-holes configurations of woven fabric kenaf composite plates: experimental works and 2-D modelling

Supar¹,

Ahmad²

2018

J. MECH. ENG. SCI.

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A study on structures response in multi-holes plates is important to understand the effect of neighbouring hole on stress concentration as subjected to tensile loading prior to bearing failure in multi-bolted joints. Current work implemented experimental framework on staggered and non-staggered multi-holes configurations to include various lay-up types, plate thickness and hole configurations as specified in the testing series. Experimental observations found that all configurations failed in net-section path suggesting that fracture initiates and propagates from the notch tip perpendicular to loading direction in self-similar fashion through the plate thickness. Non-staggered hole configurations demonstrated peak load compared to staggered counterparts due to more congested holes in staggered configurations. Two-dimensional Extended Finite Element Method (XFEM) modelling framework was carried out in all configurations investigated by sufficient meshing refinements, damage stabilization value and boundary conditions. XFEM was extended from classical finite element expression which has enriched function to enable the crack be tracked visually. A physically-based constitutive model from traction-separation relationship was applied and independently measured material properties and in-plane elastic properties were implemented in current work. Strength prediction results showed that good agreement was found in all testing series and showed discrepancies of less than 15%, the best prediction in combination of PX4 lay-ups and staggered multi-holes configurations series.

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Section: Validation Of Fea Resultssupporting

confidence: 89%

Section: Introductionmentioning

confidence: 99%

Multi-holes configurations of woven fabric kenaf composite plates: experimental works and 2-D modelling

Supar¹,

Ahmad²

2018

J. MECH. ENG. SCI.

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“…Remark 3 Condition (16) of our theorems cannot be weakened, as the example considered in [51] shows; if we take λ 1, then Eqs. (15) will not always be solvable.…”

Section: Remarkmentioning

confidence: 99%

“…The influence of various inhomogeneities on nonlinear deformation and buckling was studied using flat isotropic panels under uniform pressure. Supar [15] investigated various configurations of plates with several holes, with different pitches and distances for different modes of destruction. Yang and Kang [16] carried out the stress analysis of an infinite rectangular plate perforated by two unequal circular holes subjected to biaxial uniform stresses.…”

Section: Introductionmentioning

confidence: 99%

Mathematical modeling of planar physically nonlinear inhomogeneous plates with rectangular cuts in the three-dimensional formulation

et al. 2021

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Mathematical models of planar physically nonlinear inhomogeneous plates with rectangular cuts are constructed based on the three-dimensional (3D) theory of elasticity, the Mises plasticity criterion, and Birger’s method of variable parameters. The theory is developed for arbitrary deformation diagrams, boundary conditions, transverse loads, and material inhomogeneities. Additionally, inhomogeneities in the form of holes of any size and shape are considered. The finite element method is employed to solve the problem, and the convergence of this method is examined. Finally, based on numerical experiments, the influence of various inhomogeneities in the plates on their stress–strain states under the action of static mechanical loads is presented and discussed. Results show that these imbalances existing with the plate’s structure lead to increased plastic deformation.

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“…In staggered hole arrangement, the fracture depends on the smallest cross-sectional area in the direction perpendicular to the plane axis. In study [16], 11 multi-hole configurations with different spacing and spacing between staggered and nonstaggered arrangement of FRP holes were studied. In most cases, staggered holes demonstrated a staggered trajectory, while a series of non-staggered holes demonstrated a crack trajectory along the section plane.…”

Section: Introductionmentioning

confidence: 99%

Mechanical behavior of fiber-glass plastic with hole pattern using digital image correlation and acoustic emission methods

Strungar,

Lobanov,

Chebotareva

et al. 2024

Frattura Ed Integrità Strutturale

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In this paper, tensile tests of specimens with a pattern of holes made of fiber-glass plastic based on combined epoxy and phenol-formaldehyde resins are carried out in order to study the processes of damage accumulation and tension fracture. The Vic-3D video system is used to evaluate damage development and inhomogeneity of strain localization during loading. Continuous recording of acoustic emission signals is carried out during the tests, resulting in obtaining data on fracture mechanisms in the material. Ranges of peak frequencies are identified. Surface analysis of specimens was carried out using a microscope. A significant reduction in strength occurs due to the presence of a circular hole in the material, although additional holes do not exacerbate this effect. Fracture patterns of specimens with a hole pattern have been analyzed, and different "paths" of fracture have been observed. The comparison of strain fields obtained on the basis of application of three-dimensional digital optical system with the configuration of strain fields constructed as a result of numerical modeling by the finite element method has been carried out. It is found that the strain fields for different open hole patterns are quantitatively and qualitatively similar and identical.

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XFEM Modelling of Multi-holes Plate with Single-row and Staggered Holes Configurations

Cited by 5 publications

References 8 publications

Multi-holes configurations of woven fabric kenaf composite plates: experimental works and 2-D modelling

Multi-holes configurations of woven fabric kenaf composite plates: experimental works and 2-D modelling

Mathematical modeling of planar physically nonlinear inhomogeneous plates with rectangular cuts in the three-dimensional formulation

Mechanical behavior of fiber-glass plastic with hole pattern using digital image correlation and acoustic emission methods

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