Mechanical characterization of stress softening in double network hydrogels

İsmail Doğan Külcü; Roozbeh Dargazany

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arXiv · 1712.07459

Mechanical characterization of stress softening in double network hydrogels

İsmail Doğan Külcü·Roozbeh Dargazany

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Abstract

In this paper, a micro-mechanical model is introduce to characterize the stress softening phenomenon in double network hydrogels. Damage in polymer matrices under deformation, which appears as the rupture of cross-linking, is assumed to result in stress softening. The evolution of a polymer matrix is described with the network evolution method by Dargazany and Itskov [Dargazany and Itskov, International Journal of Solids and Structures, 2009, 46, 2967]. The model includes a number of physically-motivated material parameters and obtains good agreement against different sets of experimental data of uniaxial cyclic tension tests.

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İsmail Doğan Külcü, Roozbeh Dargazany. 2017-12-20. Mechanical characterization of stress softening in double network hydrogels. https://arxiv.org/abs/1712.07459

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