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Modeling unidimensional creep by the method of isochrones

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Conclusions

We have constructed a unidimensional creep model which describes all characteristic stages of the process and considers cyclicity of loading. The base creep experiment can be limited to the steady-state stage and does not entail determination of a damage function.

It was shown that the character of creep can be determined from the type of instantaneous strain curve. It was established in particular that only transient creep will occur for media which exhibit linear strain-hardening, all stages will be realized in media exhibiting exponential strain-hardening, and an ideally plastic medium will behave over time as a linearly viscous medium.

Creep is accelerated in media in which a cyclic load reduces the ductility indices. If strain-hardening occurs, then a cyclic load retards creep.

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Authors
  1. V. P. Golub
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  2. A. S. Oleinik
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Additional information

Institute of Mechanics, Academy of Sciences of the Ukrainian SSR, Kiev. Translated from Prikladnaya Mekhanika, Vol. 24, No. 12, pp. 71–79, December, 1988.

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Golub, V.P., Oleinik, A.S. Modeling unidimensional creep by the method of isochrones. Soviet Applied Mechanics 24, 1204–1211 (1988). https://doi.org/10.1007/BF00887928

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  • DOI: https://doi.org/10.1007/BF00887928

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