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- Title
Estimation of Yield Function for Anisotropic Aggregate of FCC Crystallites.
- Authors
Zhou, Lu; Min, Guanhua; Zhao, Tengfei; Huang, Mojia; Lan, Zhiwen
- Abstract
In this paper, we give an simple but approximate yield surface for single FCC crystals in Hill's criterion form by Schmid's law and nonlinear optimization theory. Assuming that all FCC crystallites in a polycrystal have the same (current) critical resolved shear stress τ c for slip, we derive two closed but approximate yield functions through the orientational averaging of all FCC crystallites' yield surfaces in the polycrystal. The effect of crystallography on the two yield functions are described by the orientation distribution function.
- Subjects
DISTRIBUTION (Probability theory); YIELD surfaces; MATHEMATICAL optimization; NONLINEAR theories; SHEARING force; DISLOCATIONS in metals
- Publication
Crystals (2073-4352), 2022, Vol 12, Issue 8, p1039
- ISSN
2073-4352
- Publication type
Article
- DOI
10.3390/cryst12081039