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Numerical Analysis of the Pivot Node in Fracture Problems

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Abstract:

Recent studies have allowed us to identify a narrow region of the thickness of the crack front in fracture problems that presents interesting characteristics for the numerical-experimental correlation. Taking the three-dimensional distribution of the stress intensity factor (K) as a reference, we observe how it remains invariant and independent of the main factors influencing this type of analysis. This article presents a summary of how to identify this point through the numerical simulation of the problem and its relationship with parameters such as thickness, load level or angle of curvature. The simulations are carried out with the ANSYS software in an aluminium CT specimen subjected to a fracture loading process in mode I.

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Periodical:

Key Engineering Materials (Volume 774)

Pages:

473-478

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.774.473

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Online since:

August 2018

Authors:

J. Garcia-Manrique, Daniel Camas, A. Lima-Rodriguez, Antonio González-Herrera

Keywords:

Finite Element Model, Fracture, Pivot Node, Stress Intensity Factor

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© 2018 Trans Tech Publications Ltd. All Rights Reserved

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References

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