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The present paper is devoted to the problem of describing materials capable of
structural transformations. Basing on two-component model of material with nonlinear internal
force, we investigate the existence of non-stable constitutive curve containing a decreasing
segment. For this purpose a kinematic loading of two-component rod is considered. The main
goal is to determine the influence of the relative displacement on the stress-strain dependence
and to establish the expression, connecting the position of the critical point on the diagram with
the parameters of the microstructure.
Keywords: non-monotone constitutive curve; two-component model; structural transformations. |
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