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Journal Articles Computer Methods in Applied Mechanics and Engineering Year : 2024

An energy-consistent discretization of hyper-viscoelastic contact models for soft tissues

Abstract

In this work, we propose a mathematical model of hyper-viscoelastic problems applied to soft biological tissues, along with an energy-consistent numerical approximation. We first present the general problem in a dynamic regime, with certain types of dissipative constitutive assumptions. We then provide a numerical approximation of this problem, with the main objective of respecting energy consistency during contact in adequacy with the continuous framework. Given the presence of friction or viscosity, a dissipation of mechanical energy is expected. Moreover, we are interested in the numerical simulation of the non-smooth and non-linear problem considered, and more particularly to the optimization of Newton's semi-smooth method and Primal Dual Active Set (PDAS) approaches. Finally, we test such numerical schemes on academic and real-life scenarios, the latter representing the contact deployment of a stainless-steel stent in an arterial tissue.
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Dates and versions

hal-04291073 , version 1 (17-11-2023)
hal-04291073 , version 2 (23-01-2024)

Identifiers

  • HAL Id : hal-04291073 , version 2

Cite

Mikaël Barboteu, Francesco Bonaldi, Serge Dumont, Christina Mahmoud. An energy-consistent discretization of hyper-viscoelastic contact models for soft tissues. Computer Methods in Applied Mechanics and Engineering, In press. ⟨hal-04291073v2⟩
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