Abstract
A model for serrated yielding based on the negative resistance characteristics of materials is discussed. An analog computer based on this model is described. The simulated curves show oscillations which are regular and uniform in amplitude. To simulate more realistic tensile test curves, a refined model which includes the effects of fluctuations in dislocation density and velocity is described. Some simulated curves using this refined model are presented. These results are close to observed tensile test curves.
This is a preview of subscription content, log in via an institution to check access.
Similar content being viewed by others
References
Bergstrom Y and Roberts W 1973Acta Metall. 21 741
Brindley B and Worthington P J 1970Metall. Rev. 15 101
Cottrell A H 1953Dislocations and plastic flow in crystals (Oxford: Clarendon Press)
Cottrell A H and Bilby B A 1949Proc. Phys. Soc. A62 49
Hall E O 1970Yield point phenomena in metals and alloys (New York: Plenum)
Keh A S, Nakada Y and Leslie W C 1968 inDislocation dynamics (eds) A H Rosenfield, G T Hahn, A L Bement and R I Jafee (New York: McGraw Hill) p. 381
Kubin L P, Ph. Spiesser and Estrin Y 1982Acta Metall. 30 385
Malygin G A 1973Phys. Status Solidi. A15 51
Nabarro F R N, Basinski Z S and Holt D B 1964Adv. Phys. 13 193
Neelakantan K and Venkataraman G 1983Acta. Metall. 31 77
Neelakantan K and Venkataraman G 1986 (to be published)
Pink E and Grinberg A 1981Mat. Sci. Eng. 51 1
Author information
Authors and Affiliations
Rights and permissions
About this article
Cite this article
Neelakantan, K. Computer simulation of serrated yielding. Bull. Mater. Sci. 8, 209–216 (1986). https://doi.org/10.1007/BF02744185
Issue Date:
DOI: https://doi.org/10.1007/BF02744185