A Bi-Material Wedge – a Model for the Prediction of Failure Initiation at Shape and Material Discontinuities

Jan Klusák; Zdeněk Knésl

doi:10.4028/www.scientific.net/KEM.324-325.1305

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 324-325A Bi-Material Wedge – a Model for the Prediction...

A Bi-Material Wedge – a Model for the Prediction of Failure Initiation at Shape and Material Discontinuities

Abstract:

Geometrical and material discontinuities in constructions lead to singular stress concentrations and consequently to a crack initiation. The model of a bi-material wedge makes it possible to analyse such construction points to assess their stability. The presented approach is based on the knowledge of the strain energy density factor distribution in the concentrator vicinity.

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Periodical:

Key Engineering Materials (Volumes 324-325)

Pages:

1305-1308

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.324-325.1305

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Online since:

November 2006

Authors:

Jan Klusák, Zdeněk Knésl

Keywords:

Bi-Material Wedge, Stability Criterion, Strain Energy Density

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References

[1] J. Klusák and Z. Knésl, in: Advances in Fracture and Damage Mechanics IV, edited by M.H. Aliabadi, ISBN: 0-9547783-1-6, (2005), pp.211-216.

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[2] J. Klusák and Z. Knésl: Engineering Mechanics 2004, National conference with international participation, Svratka, Czech Rep., [CD-ROM] ISBN 80-85918-88-9, (2004).

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[3] G.C. Sih, in: Mechanics of Fracture - Methods of analysis and solutions of crack problems, edited by G.C. Sih, Noordhoff Int. Publishing, Leyden, The Netherlands, (1973), pp. XXI-XLV.

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[4] J. Klusák and Z. Knésl: Computational Materials Science (2006), in press.

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[5] D. Broek, Elementary Engineering Fracture Mechanics, Noordhoff Int. Publishing, (1974) H2 H1 H2C, m H1C, m(H2 = 0) H2C, m(H1 = 0) H 1C, m H 2 H1 Fig. 2: The stability curve for a combined loading mode of a bi-material wedge.

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