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Analysis of the Stress Invariants Criterions for I-II Mixed Mode Crack Initiation Angles

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Abstract:

Crack propagation in practical engineering problems is often of mixed-mode type. The analysis of mixed-mode I–II crack initiation angles under different loading conditions is presented using stress invariants criteria. Where I1 and I2 are the first and the second stress invariants, IP-criterion postulates that crack will propagate along the direction defined by a maximum value of IP along the elastic–plastic boundary defined by von Mises. The mixed-mode I-II crack initiation angle is predicted successfully and is agree well with experimental data.

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Periodical:

Advanced Materials Research (Volumes 97-101)

Pages:

1194-1197

DOI:

https://doi.org/10.4028/www.scientific.net/AMR.97-101.1194

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Online since:

March 2010

Authors:

Dong Xia Li, Yan Zhi Zhu

Keywords:

Crack Initiation Angle, Experimental Result, Fracture Criterion, I–II Mixed Mode Crack, Stress Invariant

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© 2010 Trans Tech Publications Ltd. All Rights Reserved

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