One-dimensional modeling of necking in rate-dependent materials

Abstract : This paper presents an asymptotically rigorous one-dimensional analytical formulation capable of accurately capturing the stress and strain distributions that develop within the evolving neck of bars and sheets of rate-dependent materials stretched in tension. The work is an extension of an earlier study by the authors on necking instabilities in rate-independent materials. The one-dimensional model accounts for the gradients of the stress and strain that develop as the necking instability grows. Material strain-rate dependence has a significant influence on the strain that can be imposed on a bar or sheet before necking becomes pronounced. The formulation in this paper enables a quantitative assessment of the interplay in necking retardation due to rate-dependence and that due to the development of hydrostatic tension in the neck. The connection with a much simpler long-wavelength approximation which does not account for curvature induced hydrostatic tension in the neck is also emphasized and extended.
Complete list of metadatas

Cited literature [11 references]  Display  Hide  Download
Contributor : Basile Audoly <>
Submitted on : Saturday, November 9, 2019 - 8:35:15 AM
Last modification on : Sunday, November 10, 2019 - 10:30:51 AM


Files produced by the author(s)



Basile Audoly, John Hutchinson. One-dimensional modeling of necking in rate-dependent materials. Journal of the Mechanics and Physics of Solids, Elsevier, 2018, ⟨10.1016/j.jmps.2018.08.005⟩. ⟨hal-01898154⟩



Record views


Files downloads