The [100] Compressive Strength of Perfect Cubic Crystals under Superimposed Biaxial Stresses

Abstract:

Stress-strain responses of five fcc crystals subjected to triaxial loading are investigated by means of pseudopotential density functional method. Particularly, the influence of superimposed transverse biaxial stresses on the maximum uniaxial stresses is evaluated for both tensile and compressive regions. The obtained results revealed that the compressive strengths (maximum compressive stresses) of all studied metals are more sensitive to the superimposed stresses than their tensile strengths. The compressive strengths were found to be increasing linear functions of the compressive transverse stresses.

• Periodical: Key Engineering Materials (Volume 465)
• Pages: 183-186
• DOI: https://doi.org/10.4028/www.scientific.net/KEM.465.183
• Online since: January 2011
• Authors: Petr Řehák, Miroslav Černý, Jaroslav Pokluda
• Keywords: Compressive Strength, First-Principle Calculations, Superimposed Biaxial Stress, Tensile Strength, Triaxial Loading

References

[1] F. Milstein and S. Chantasiriwan: Phys. Rev. B, Vol. 58 (1998) p.6006.

[2] W.X. Li and T.C. Wang: J. Phys.: Condens. Matter, Vol. 10 (1998) p.9889.

[3] M. Černý, M. Šob, J. Pokluda and P. Šandera: J. Phys.: Condens. Matter, Vol. 16 (2004) p.1045.

[4] M. Černý and J. Pokluda: J. Phys.: Condens. Matter, Vol. 21 (2009) p.145406.

[5] M. Černý and J. Pokluda: Phys. Rev. B, Vol. 76 (2007) p.024115.

[6] X. Gonze et al.: Comp. Mat. Sci., Vol. 25 (2002) p.478.

[7] N. Troullier and J.L. Martins: Phys. Rev. B Vol. 43 (1991) p. (1993).

[8] J. P. Perdew, K. Burke and M. Ernzerhof: Phys. Rev. Lett., Vol. 77 (1996) p.3865.

[9] D.R. Lide (ed. ): Handbook of Chemistry and Physics (CRC Press, 2005).