Picture of a black hole

Strathclyde Open Access research that creates ripples...

The Strathprints institutional repository is a digital archive of University of Strathclyde's Open Access research outputs. Strathprints provides access to thousands of research papers by University of Strathclyde researchers, including by Strathclyde physicists involved in observing gravitational waves and black hole mergers as part of the Laser Interferometer Gravitational-Wave Observatory (LIGO) - but also other internationally significant research from the Department of Physics. Discover why Strathclyde's physics research is making ripples...

Strathprints also exposes world leading research from the Faculties of Science, Engineering, Humanities & Social Sciences, and from the Strathclyde Business School.

Discover more...

Numerical study of the influence of microstructure on subsequent yield surfaces of polycrystalline materials

Zattarin, P. and Lipinski, P. and Rosochowski, A. (2004) Numerical study of the influence of microstructure on subsequent yield surfaces of polycrystalline materials. International Journal of Mechanical Sciences, 46 (9). pp. 1377-1398. ISSN 0020-7403

Full text not available in this repository. (Request a copy from the Strathclyde author)

Abstract

This study deals with modelling of the elastoplastic behaviour of a polycrystalline material, subjected to complex loading programmes, using a self-consistent scheme based on scale transition techniques. The influence of microstructure evolution on the elastoplastic response of the material is analysed. A brief introduction to the self-consistent modelling is presented. The comparison of the numerical results with the experimental data available from literature reveals a good agreement between the calculated and measured evolution of yield surface. From the three parameters describing the internal structure of the material, the grain shape evolution is neglected in this study. The remaining two are internal stresses and crystallographic texture. The influence of these parameters on subsequent yield surfaces is analysed. When compared with the second-order residual stresses, the role of crystallographic texture in hardening of polycrystals appears to be insignificant. The influence of the intragranular microstructure, or third-order internal stresses, is addressed indirectly by appropriate simulations involving the hardening matrix of individual crystals.