J-Integral Evaluation of Surface Cracks in Round Bar under Mode III Loadings

Ismail, Al Emran; Ariffin, Ahmad Kamal; Abdullah, Shahrum; Ghazali, M. J.

doi:10.19026/rjaset.7.490

Cited by 5 publications

(4 citation statements)

References 17 publications

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“…However, most of these works focused more on the normal cracks [4][5][6][7][8]. According to author's knowledge, the works on the inclined cracks embedded in dissimilar materials are difficult to find [9][10][11]. Therefore, the main objective of this paper is to analyze the behavior of inclined edge cracks in dissimilar materials subjected to mode I tension loading.…”

Section: Introductionmentioning

confidence: 99%

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Effect of Mechanical Mismatch on the Stress Intensity Factors of Inclined Cracks under Mode I Tension Loading

Azlan

Ismail

2015

AMM

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Abstract. This paper presents numerical analysis of stress intensity factors (SIFs) of inclined cracks due to mechanical mismatches. According to literature survey, tremendous amounts of SIFs can be found elsewhere. However, the SIFs for inclined cracks are difficult to obtain especially when mechanical mismatch at the crack interface are considered. ANSYS finite element program is used to model the cracks embedded in plain strain plates. The cracks are oriented at the interface between two different materials and subjected to mode I tension loading. It is showed that when mechanical mismatches are introduced the mode I SIFs reduced and on the other hand mode II SIFs increased. When the cracks are inclined, the mode I SIFs diverged but it is not for mode II SIFs and gradually increased when compared with the normal cracks.

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Section: Introductionmentioning

confidence: 99%

“…It is successfully used to ensure the reliability and integrity of mechanical structures. Tremendous amount of works available in discussing the role of cracks in determining the structural strength [1][2][3]. However, most of these works focused more on the normal cracks [4][5][6][7][8].…”

Section: Introductionmentioning

confidence: 99%

Effect of Mechanical Mismatch on the Stress Intensity Factors of Inclined Cracks under Mode I Tension Loading

Azlan

Ismail

2015

AMM

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“…The presence of crack at or near the interface will affect the structural performances leading to induced mechanical damages. Tremendous amount of basic studies can be found elsewhere, especially for central crack [1,2]. Lan et al [3,4] and Oda et al [5] investigated the problems of single and double edge cracks.…”

Section: Introductionmentioning

confidence: 99%

Multiple Crack Interactions in Bi-Material Plates under Mode I Tension Loading

Ismail

2014

AMM

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The solution of stress intensity factor (SIF) for central edge crack embedded in bimaterial plate can be found in open literature. Instead of a single edge crack, some researches on the multiple crack problems can also be found. However, the solutions of SIFs for multiple edge cracks in bi-material plates are difficult to obtain. In this paper, such problems are solved numerically using ANSYS finite element program. There are three important parameters that are used namely, relative crack depth, a/W, relative offset distance, b/h and modulus ratio, E 1 /E 2 . Both materials are assumed to be perfectly bonded and fulfill the plain strain condition. It is found that all variables used play an important role in determining the SIFs. However, when b/h is large enough, it has no significant effect on the SIF where it converged to an almost single value. The same situation does not occur for mode II SUFs where the SIFs diverged when the parameters used are increased.

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“…They found that their model can be used to predict the stress intensity factors very well. Another study on the slanted crack can be found in [11][12][13]. However, this work focused on the 2D two dimensional cracks.…”

Section: Introductionmentioning

confidence: 99%

Finite Element Analysis of Interactions of between two cracks in FGM notched Plate under Mechanical Loading

Bouchikhi¹,

Lousdad

Khalfi

et al. 2019

Frattura Ed Integrità Strutturale

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The investigation of multiple crack interactions in fracture mechanics is important to predict the safety and reliability of structures. This paper introduces a 2D numerical investigation used to calculate the J-integral of the main crack behavior emanating from a semicircular notch and double semicircular notch and its interaction with another crack which may occur in various positions in titanium /titanium boride functionally graded material (TiB/Ti FGM) plate subjected to tensile mechanical load. Young's modulus of the functionally graded material plate varies along the specimen width (notch radius direction r-FGM) with exponential-law (E-FGM) function. Further, the Poisson's ratio is taken as a constant in normal direction. For this purpose the variations of the material properties are applied at the integration points and at the nodes by implementing a subroutine USDFLD in the ABAQUS software. The variation of the J-integral according to the position, the length, and the angle of rotation of cracks are examined; also the effect of different parameters for double notch FGM plate is investigated as well as the effect of band of FGM within the ceramic plate to reduce Jintegral. According to the numerical analysis, all parameters above played an important role in determining the J-integral.

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J-Integral Evaluation of Surface Cracks in Round Bar under Mode III Loadings

Cited by 5 publications

References 17 publications

Effect of Mechanical Mismatch on the Stress Intensity Factors of Inclined Cracks under Mode I Tension Loading

Effect of Mechanical Mismatch on the Stress Intensity Factors of Inclined Cracks under Mode I Tension Loading

Multiple Crack Interactions in Bi-Material Plates under Mode I Tension Loading

Finite Element Analysis of Interactions of between two cracks in FGM notched Plate under Mechanical Loading

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