Estimation of the Zone of Failure Extent in Quasi-Brittle Specimens with Different Crack-Tip Constraint Conditions from Stress Field

Article Preview

Abstract:

A multi-parameter fracture mechanics concept based on the Williams power series is applied on novel cracked specimen geometries utilizing combined boundary conditions of the wedge splitting and the three-point bending test. Crack tip stress fields for various configurations (causing different constraint conditions at the crack tip and thus also different fracture process zone extents) are numerically investigated and subsequently analytically reconstructed using developed procedure. An importance of using higher order terms of the Williams series is demonstrated.

You might also be interested in these eBooks

Info:

Periodical:

Key Engineering Materials (Volumes 592-593)

Pages:

262-265

Citation:

Online since:

November 2013

Export:

Price:

Permissions CCC:

Permissions PLS:

Сopyright:

© 2014 Trans Tech Publications Ltd. All Rights Reserved

Share:

Citation:

[1] S.P. Shah, S.E. Swartz and Ch. Ouyang: Fracture mechanics.. (Wiley, New York 1995).

Google Scholar

[2] Z.P. Bažant and J. Planas: Fracture and Size Effect.. (CRC Press, Boca Raton, 1998).

Google Scholar

[3] S. Kumar and S. V Barai: Concrete Fracture Models… (Springer, Berlin 2011).

Google Scholar

[4] Z.P. Bažant: J. Eng. Mech. ASCE 122(2) (1996), p.138.

Google Scholar

[5] Q. Yu, J. -L. Le, C.G. Hoover and Z.P. Bažant: J. Eng. Mech. ASCE 136(1) (2010), p.40.

Google Scholar

[6] K. Duan, X. -Z. Hu and F.H. Wittmann: Engng. Fract. Mech. 70 (2003), p.2257.

Google Scholar

[7] B.L. Karihaloo, H.M. Abdalla and T. Imjai: Mag. Concr. Res. 55 (2003), p.471.

Google Scholar

[8] V. Veselý and P. Frantík: Adv. Eng. Softw., in press, available online, http: /dx. doi. org/10. 1016/j. advengsoft. 2013. 06. 004.

Google Scholar

[9] V. Veselý, Z. Keršner, J. Němeček, P. Frantík, L. Řoutil and B. Kucharczyková: Chem. Listy 104 (2010), p.382.

Google Scholar

[10] M.L. Williams: J. Appl. Mech. (ASME) 24 (1957), p.237.

Google Scholar

[11] M.R. Ayatollahi and M. Nejati: Fatigue Fract. Engng. Mater. Struct. 34 (2011), p.159.

Google Scholar

[12] V. Veselý, J. Sobek, L. Šestáková and S. Seitl: Key Eng. Mat. 525-526 (2013), p.529.

Google Scholar

[13] ANSYS User's manual version 10. 0, Swanson Analysis System, Inc., Houston, (2005).

Google Scholar