A robust anisotropic hyperelastic formulation for the modelling of soft tissue

DR Nolan, AL Gower, M Destrade, RW Ogden… - Journal of the …, 2014 - Elsevier
Abstract The Holzapfel–Gasser–Ogden (HGO) model for anisotropic hyperelastic behaviour
of collagen fibre reinforced materials was initially developed to describe the elastic …

A phase-field approach to model fracture of arterial walls: theory and finite element analysis

O Gültekin, H Dal, GA Holzapfel - Computer methods in applied mechanics …, 2016 - Elsevier
This study uses a recently developed phase-field approach to model fracture of arterial walls
with an emphasis on aortic tissues. We start by deriving the regularized crack surface to …

The exponentiated Hencky-logarithmic strain energy. Part I: Constitutive issues and rank-one convexity

P Neff, ID Ghiba, J Lankeit - Journal of Elasticity, 2015 - Springer
We investigate a family of isotropic volumetric-isochoric decoupled strain energies F ↦ W_
eH (F):= W _ eH (U):=\left {μ ke^ k ‖ dev _n U ‖^ 2+ κ 2 ke^ k tr (\log U)^ 2 & if\det F> …

Control of tension–compression asymmetry in Ogden hyperelasticity with application to soft tissue modelling

KM Moerman, CK Simms, T Nagel - Journal of the mechanical behavior of …, 2016 - Elsevier
This paper discusses tension–compression asymmetry properties of Ogden hyperelastic
formulations. It is shown that if all negative or all positive Ogden coefficients are used …

On the quasi-incompressible finite element analysis of anisotropic hyperelastic materials

O Gültekin, H Dal, GA Holzapfel - Computational mechanics, 2019 - Springer
Quasi-incompressible behavior is a desired feature in several constitutive models within the
finite elasticity of solids, such as rubber-like materials and some fiber-reinforced soft …

Modeling of the Achilles subtendons and their interactions in a framework of the absolute nodal coordinate formulation

LP Obrezkov, T Finni, MK Matikainen - Materials, 2022 - mdpi.com
Experimental results have revealed the sophisticated Achilles tendon (AT) structure,
including its material properties and complex geometry. The latter incorporates a twisted …

On anisotropic elasticity and questions concerning its finite element implementation

L Vergori, M Destrade, P McGarry, RW Ogden - Computational Mechanics, 2013 - Springer
We give conditions on the strain–energy function of nonlinear anisotropic hyperelastic
materials that ensure compatibility with the classical linear theories of anisotropic elasticity …

Study on the water bursting law and spatial distribution of fractures of mining overlying strata in weakly cemented strata in West China

Y Li, S Zhang, Y Yang, H Chen, Z Li… - Geomechanics and …, 2022 - koreascience.kr
A study of the evolution of overburden fractures under the solid-fluid coupling state was
conducted based on the geological and mining characteristics of the coal seam depth, weak …

A homeostatic-driven turnover remodelling constitutive model for healing in soft tissues

E Comellas, TC Gasser… - Journal of the Royal …, 2016 - royalsocietypublishing.org
Remodelling of soft biological tissue is characterized by interacting biochemical and
biomechanical events, which change the tissue's microstructure, and, consequently, its …

[HTML][HTML] Modelling the slight compressibility of anisotropic soft tissue

MD Gilchrist, JG Murphy, W Parnell, B Pierrat - International Journal of …, 2014 - Elsevier
In order to avoid the numerical difficulties in locally enforcing the incompressibility constraint
using the displacement formulation of the Finite Element Method, slight compressibility is …