Development of wide-range constitutive equations for calculations of high-rate deformation of metals

Autor: Preston D., Zocher M.A., Nadezhin S.S., Lebedev A.I., Igonin V.I., Ignatova O.N., Aprelkov O.N., Raevsky V.A., Coul A.
Jazyk: angličtina
Rok vydání: 2011
Předmět:
Zdroj: EPJ Web of Conferences, Vol 10, p 00022 (2011)
Druh dokumentu: article
ISSN: 2100-014X
DOI: 10.1051/epjconf/20101000022
Popis: For development of models of strength and compressibility of metals in wide range of pressures (up to several megabar) and strain rates ~ 1÷108 s−1, the method of dynamic tests is used. Since direct measurement of strength is impossible under complicated intensive high-rate loading, a formal model is created at first, and then it is updated basing on comparison with many experiments, which are sensitive to shear strength. Elastic-plastic, viscous-elastic-plastic and relaxation integral models became nowadays most commonly used. The basic unsolved problems in simulation of high-rate deformation of metals are mentioned in the paper.
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