M. .. Materials,

. , 81 4.2.7 FE modeling of the suction test

. .. Discussion, , vol.86

. .. Conclusion,

, Constitutive relations are of fundamental importance for the numerical simulation of deformations inside the tissues. Most of the efforts for constitutive modeling of the soft tissues consisted in assuming a law from the collected experimental data, Continuum-based constitutive relations describe the general behavior of the internal constitution of biological soft tissues [Gasser, Ogden, and Holzapfel, 2005.

, The derived constitutive laws proposed in the literature try to approximate different mechanical behaviors such as: hyperelasticity, viscoelasticity, anisotropy, stress-softening Seyed Ali ELAHI 117

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