Determination of crack initiation and propagation in two disc shaped specimens using the improved maximum tangential stress criterion

• Autorzy: Eftekhari M. , Baghbanan A. , Mohtarami E. , Hashemolhosseini H.

Identyfikatory

DOI

10.15632/jtam-pl.55.2.469

• Języki publikacji: EN

Abstrakty

EN

The crack initiation angle and propagation path for two different disc shaped test specimens (i.e., SCB and CBD specimen) are investigated experimentally and theoretically. The Maximum Tangential Stress (MTS) criterion does not calculate the crack initiation angle in SCB and CBD specimens correctly. Moreover, at the angles after occurrence of pure mode II, where the stress intensity factor of mode I becomes negative, this criterion is not applicable. Therefore, in this research work, Improved MTS (IMTS) criterion which has been implemented in the extended finite element method and is applicable under tensile and compressive loading conditions to examine the crack propagation path in the aforementioned disc shaped specimens. Furthermore, an experimental study on a cracked Brazilian disc specimen has been conducted at different angles. Results of IMTS criterion in these specimens show that the crack propagation path and the crack initiation angle can be predicted theoretically by using IMTS criterion.

Słowa kluczowe

EN

Extended Finite Element Method (XFEM); maximum tangential stress (MTS) criterion; improved maximum tangential stress (IMTS) criterion; crack propagation; stress intensity factor

• Wydawca: Polskie Towarzystwo Mechaniki Teoretycznej i Stosowanej
• Czasopismo: Journal of Theoretical and Applied Mechanics
• Rocznik: 2017
• Tom: Vol. 55 nr 2
• Strony: 469--480
• Opis fizyczny: Bibliogr. 50 poz., rys.

Twórcy

autor

Eftekhari M.

• Department of Mining Engineering, Science and Research Branch, Islamic Azad University, Tehran, Iran

autor

Baghbanan A.

• Department of Mining Engineering; Isfahan University of Technology (IUT), Isfahan, Iran

autor

Mohtarami E.

• Department of Mining Engineering; Isfahan University of Technology (IUT), Isfahan, Iran

autor

Hashemolhosseini H.

• Department of Civil Engineering; Isfahan University of Technology (IUT), Isfahan, Iran

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Uwagi

PL

Opracowanie ze środków MNiSW w ramach umowy 812/P-DUN/2016 na działalność upowszechniającą naukę (zadania 2017)