Influence of Friction on Stress and Strain Distributions in Small Punch Creep Test Models

Petr Dymáček; Stanislav Seitl; Karel Milička; Ferdinand Dobeš

doi:10.4028/www.scientific.net/KEM.417-418.561

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HomeKey Engineering MaterialsKey Engineering Materials Vols. 417-418Influence of Friction on Stress and Strain...

Influence of Friction on Stress and Strain Distributions in Small Punch Creep Test Models

Abstract:

The FEM modeling of small punch tests on miniaturized thin discs (SPT) of two heat resistant steels was performed. The FE models did represent the creep SPT, i.e. tests with constant acting force. It was shown that different values of the surface friction coefficient used in the calculations have significant impact on the calculated stress and strain state and consequently on the deformed shape of the disc. Thus, the surface friction coefficient should be considered one of the key factors for any correct correlation of SPT and uniaxial creep test results. Proper attention must be paid to the friction conditions during the long term creep deformation. An attempt to define simple approach how to relate the SPT with uniaxial tests is suggested. Some of the calculated results are compared with experiment.

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Periodical:

Key Engineering Materials (Volumes 417-418)

Pages:

561-564

DOI:

https://doi.org/10.4028/www.scientific.net/KEM.417-418.561

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Online since:

October 2009

Authors:

Petr Dymáček, Stanislav Seitl, Karel Milička, Ferdinand Dobeš

Keywords:

Chromium Steel, Creep, Finite Element Model (FEM), Small Punch Test

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References

[1] Small Punch Test Method for Metallic Materials CWA15627. Part A: A Code of Practice for Small Punch Creep Testing and Part B: A Code of Practice for Small Punch Testing for Tensile and Fracture Behaviour, Documents of CEN WS21, 2007, Brusseles.

DOI: 10.1520/e3205-20

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[2] P. Dymáček, K. Milička: Strength of materials, 1/2008, pp.32-35, ISSN 0556-171X.

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[3] K. Milička and F. Dobeš: Int. J. Pressure Vessels and Piping Vol. 83 (2006), p.625.

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[4] P. Dymáček: In: New methods of damage and failure analysis of structural parts, TU Ostrava, Czech Republic, September 4-8, 2006, ISBN 80-248-1126-0, p.269.

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[5] F. Dobeš, K. Milička: In: Proceedings of Tenth European Conference on Composite Materials (ECCM-10), June 3-7, 2002, Brugge, Belgium.

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