This article is cited in 9 papers

Mathematical model of creep for a microinhomogeneous nonlinearly elastic material

V. P. Radchenko, D. V. Shapievskii

Samara State Technical University, Samara, 443100

Abstract: A mathematical model is proposed to describe the experimentally observed creep effect on the instantaneous elastic deformation of physically nonlinear elastic microinhomogeneous materials. Using a structural model of the medium, it is shown that, during unloading of a sample after creep at constant stress, the elastic strain can be both larger and smaller than the elastic strain during loading. It is shown that calculation results for a biocomposite material are in good agreement with experimental data.

Keywords: nonlinear elasticity, creep, microinhomogeneous medium, structural model, unloading theorem, experimental data.

UDC: 539.376

Received: 01.02.2007
Accepted: 18.05.2007

 English version: Journal of Applied Mechanics and Technical Physics, 2008, 49:3, 478–483

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