Numerical analysis of a new mixed mode I/III fracture test specimen

Aliha, M.R.M.; Bahmani, Aram; Akhondi, Sh.

doi:10.1016/j.engfracmech.2014.12.010

Cited by 155 publications

(83 citation statements)

References 56 publications

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“…The results show that the change of loading mode from nominal mode III to nominal mode II has had no effect on the distributions of τyz and τxy on and near the crack surface, but has significantly changed the through thickness distributions of KII, KIII. Similar observations have been also reported for other mixed mode test geometries like edge notched disc bend (ENDB) specimen and tested with different brittle materials (Aliha et al, 2015a(Aliha et al, ,b, 2016a(Aliha et al, ,b, 2017Bahmani et al, 2017).…”

Section: The Research Programsupporting

confidence: 72%

Corner point singularities under in-plane and out-of-plane loading: a review of recent results

Berto¹,

Pook²,

Campagnolo³

2017

10.5267/j.esm

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The linear elastic analysis of homogeneous, isotropic cracked bodies started in the 1900s. The existence of three dimensional corner point effects in the vicinity of a corner point where a crack front intersects a free surface was investigated in the late 1970s. An approximate solution by Bažant and Estenssoro explained some features of corner point effects but there were various paradoxes and inconsistencies. Results derived from finite element models showed that the analysis is incomplete. The stress field in the vicinity of a corner point appears to be the sum of two different singularities (i.e. stress intensity factors and corner point singularities). In this paper some recent results for the corner point singularities under in and out of plane loadings is reviewed and discussed.

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Section: The Research Programsupporting

confidence: 72%

Corner point singularities under in-plane and out-of-plane loading: a review of recent results

Berto¹,

Pook²,

Campagnolo³

2017

10.5267/j.esm

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“…Generally, when the vehicle is very close to the crack the value of T-stress is positive that results in reduction of overlay resistance against crack growth. However, when the vehicle is far enough from the crack in its left or right hand side, the value of T-stress becomes negative which can increase even the load bearing capacity of the cracked overlay based on the principals of mixed mode fracture theories and previous published papers [25][26][27][28][29][30][31][32][33][34]. Thus, the risk of pavement cracking increases for those situations where the vehicle approaches to the crack location due to enhancement of both stress intensity factors (K I and K II ) and influence of positive T-stress that reduces the load bearing capacity of the overlay.…”

Section: Top-down Crack Resultsmentioning

confidence: 98%

Effects of loading, geometry and material properties on fracture parameters of a pavement containing top-down and bottom-up cracks

Aliha

Sarbijan

2016

Engineering Fracture Mechanics

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“…It is possible to find instead very few papers dealing with tension/torsion (mixed mode I+III) regarding ceramics like Al2O3, PMMA, asphalt concrete and inorganic glass (Raju, 1981;Zheng et al, 2003Zheng et al, , 2005Aliha et al, 2015aAliha et al, , 2015bAliha et al, , 2016aAliha et al, , 2016b. Berto et al (2012) provided more than 70 new experimental results from static fracture of notched graphite specimens subjected to torsion loads varying notch root radii, notch opening angles and notch depths.…”

Section: Torsion Loadingmentioning

confidence: 99%

Review of local strain energy density theory for the fracture assessment of V-notches under mixed mode loading

Ayatollahi¹,

Berto²,

Campagnolo³

et al. 2017

10.5267/j.esm

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The present work summarizes some recent experimental, theoretical and numerical results on brittle fracture of isostatic polycrystalline graphite. The analyses have been carried out on Vnotched samples under mixed mode (I+II), torsion and compression loading, considering various combinations of the notch tip radius, opening angle and notch tilt angle. The static strength of the considered specimens is assessed through an approach based on the strain energy density averaged over a control volume. The center of the control volume is located on the notch edge, where the principal stress reaches its maximum value. The correct orientation is obtained by a rigid rotation of the crescent-shaped volume while the size depends on the fracture toughness and the ultimate strength of the material. This methodology has been already used in the literature to analyze U-and V-shaped notches subject to mode I loading with very good results and advantages with respect to classic approaches. The results reported in this new work show, also under mixed mode loading conditions, good agreement between experimental data and theoretical predictions.

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Numerical analysis of a new mixed mode I/III fracture test specimen

Cited by 155 publications

References 56 publications

Corner point singularities under in-plane and out-of-plane loading: a review of recent results

Corner point singularities under in-plane and out-of-plane loading: a review of recent results

Effects of loading, geometry and material properties on fracture parameters of a pavement containing top-down and bottom-up cracks

Review of local strain energy density theory for the fracture assessment of V-notches under mixed mode loading

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