UTILIZING THE EXTENDED ﬁNITE ELEMENT METHOD FOR DETERMINING CRACK STRESS INTENSITY FACTORS AND HIGHER ORDER TERMS COEFFICIENTS

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GHASEMI GHALEBAHMAN AHMAD; SALAVATI SAEED

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Journal: Modares Mechanical Engineering Year:2015 | Volume:15 | Issue:2 Page(s): 135-146

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Title

UTILIZING THE EXTENDED ﬁNITE ELEMENT METHOD FOR DETERMINING CRACK STRESS INTENSITY FACTORS AND HIGHER ORDER TERMS COEFFICIENTS

Author(s)

GHASEMI GHALEBAHMAN AHMAD | SALAVATI SAEED | Issue Writer Certificate

Keywords

EXTENDED FINITE ELEMENT METHODQ2

OVER DETERMINISTIC LEAST SQUARES METHODQ2

STRESS INTENSITY FACTORSQ2

WILLIAMS' ASYMPTOTIC SERIES EXPANSIONQ2

Abstract

In the present study, in order to evaluate the elastic displacement field and subsequently the fracture parameters within the isotropic homogeneous elastic solids with the edge or interior cracks, the EXTENDED FINITE ELEMENT METHOD with level set technique was used to avoid the disadvantages associated with the standard finite element method. An OVER DETERMINISTIC LEAST SQUARES METHOD was utilized to determine the crack STRESS INTENSITY FACTORS as well as the coefficients of the higher order terms in the Williams' asymptotic series solution for structures containing crack in various modes of failure by fitting the series solution of displacement fields around the crack tip to a large number of nodal displacements obtained from the EXTENDED FINITE ELEMENT METHOD. For validating the results, several cracked specimens subjected to pure mode I, pure mode II, and mixed modes I/II loading were performed. Comparisons with results available from the literature obtained by the other formulations reveal the efficiency and the simplicity of the proposed method and demonstrate the capability of it to capture accurately the crack STRESS INTENSITY FACTORS and the coefﬁcients of higher order terms.

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APA: Copy

GHASEMI GHALEBAHMAN, AHMAD, & SALAVATI, SAEED. (2015). UTILIZING THE EXTENDED ?NITE ELEMENT METHOD FOR DETERMINING CRACK STRESS INTENSITY FACTORS AND HIGHER ORDER TERMS COEFFICIENTS. MODARES MECHANICAL ENGINEERING, 15(2), 135-146. SID. https://sid.ir/paper/179756/en

Vancouver: Copy

GHASEMI GHALEBAHMAN AHMAD, SALAVATI SAEED. UTILIZING THE EXTENDED ?NITE ELEMENT METHOD FOR DETERMINING CRACK STRESS INTENSITY FACTORS AND HIGHER ORDER TERMS COEFFICIENTS. MODARES MECHANICAL ENGINEERING[Internet]. 2015;15(2):135-146. Available from: https://sid.ir/paper/179756/en

IEEE: Copy

AHMAD GHASEMI GHALEBAHMAN, and SAEED SALAVATI, “UTILIZING THE EXTENDED ?NITE ELEMENT METHOD FOR DETERMINING CRACK STRESS INTENSITY FACTORS AND HIGHER ORDER TERMS COEFFICIENTS,” MODARES MECHANICAL ENGINEERING, vol. 15, no. 2, pp. 135–146, 2015, [Online]. Available: https://sid.ir/paper/179756/en

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