On the crack propagation analysis of rock like Brazilian disc specimens containing cracks under compressive line loading

Haeri, Hadi; Shahriar, K.; Marji, Mohammad Fatehi; Moarefvand, Parviz

doi:10.1590/s1679-78252014000800007

Cited by 30 publications

(8 citation statements)

References 46 publications

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“…From Brazilian disc geometry, mention above a calibration curves for mode I and II for various notch angle  and a/R ratio can be determined as a following functions [25,26]:…”

Section: Calibration Curvesmentioning

confidence: 99%

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Seitl

Miarka

2017

Frattura Ed Integrità Strutturale

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ABSTRACT. Durability and sustainability of structures made from concrete like materials is getting more into an interest of civil engineers. Structures are subjected not only to uniaxial load, this means if there is a crack inside the load could be divided into mode I and shear mode II, but also to a mixed mode I/II. Therefore, it is necessary to perform test, which covers mixed mode loads and could be used for specimen made from concrete core-drill. Recommended test specimens used for evaluation of fracture mechanical parameters has usually a prismatic or rectangular shape. The cost of reshaping cylinder into rectangular is expensive and not very efficient, therefore it is very effective to use Brazilian disc test specimen with central notch to obtain mixed mode fracture parameters. The contribution deals with numerical support for Brazilian disc test to obtain calibration curves for mode I and mode II, evaluation of experimental results and compare them with data adapted from literature.

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“…From Brazilian disc geometry, mention above a calibration curves for mode I and II for various notch angle  and a/R ratio can be determined as a following functions [25,26]:…”

Section: Calibration Curvesmentioning

confidence: 99%

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Seitl

Miarka

2017

Frattura Ed Integrità Strutturale

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“…These publications were critically examined, but did not reveal any references to the aspects emphasised here. It is also worth mentioning the contributions of Lanaro et al (2009), Andreev (1991, Markides et al (2012), Erarslan et al (2012) and Aydin and Basu (2006), Yang et al (2015), Haeri et al (2014), Choupania et al (2015), Cai et al (2015), which addressed the issue of the Brazilian test, either theoretically or experimentally, or even applied. However, none of them investigated the foundations raised from Timoshenko and Goodier (1970), in which the problem of methodological character examined in this work was found.…”

Section: Introductionmentioning

confidence: 99%

Superposition of Stress Fields in Diametrically Compressed Cylinders

Rocha

Wahrhaftig

2016

Lat. Am. j. solids struct.

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The theoretical analysis for the Brazilian test is a classical plane stress problem of elasticity theory, where a vertical force is applied to a horizontal plane, the boundary of a semi-infinite medium. Hypothesizing a normal radial stress field, the results of that model are correct. Nevertheless, the superposition of three stress fields, with two being based on prior results and the third based on a hydrostatic stress field, is incorrect. Indeed, this work shows that the Cauchy vectors (tractions) are non-vanishing in the parallel planes in which the two opposing vertical forces are applied. The aim of this work is to detail the process used in the construction of the theoretical model for the three stress fields used, with the objective being to demonstrate the inconsistency often stated in the literature.

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“…In this paper, the experimental research method is used to simulate the multi-point bending forming of AZ31B sheet with different thickness [3][4], and the influence of thickness on AZ31B cold bending limit is obtained, so as to enhance the magnesium plate cold bending limit [5]. It has important reference value for the process design of the production.…”

Section: Introductionmentioning

confidence: 99%

Study on the Influence of Thickness on the Cold Bending Limit of Magnesium Sheets

Quan¹,

Zhao²

2016

Proceedings of the 2nd Annual International Conference on Advanced Material Engineering (AME 2016)

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Abstract. The plastic property of AZ31B sheet is poor at room temperature, so taking it as the object. Based on ABAQUS platform, FEM models are established. Moreover, ductile damage value is used as the indication of the crack, and based on the linear interpolation mathematical model, the minimum relative bending radius in each finite element model can be calculated. The effects of sheet thickness on the bending limit of AZ31B magnesium sheet are studied.

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On the crack propagation analysis of rock like Brazilian disc specimens containing cracks under compressive line loading

Cited by 30 publications

References 46 publications

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Evaluation of mixed mode I/II fracture toughness of C 50/60 from Brazilian disc test

Superposition of Stress Fields in Diametrically Compressed Cylinders

Study on the Influence of Thickness on the Cold Bending Limit of Magnesium Sheets

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