Numerical simulation of the failure of ventricular tissue due to deep penetration: The impact of constitutive properties

Forsell, Caroline; Gasser, Thomas C.

doi:10.1016/j.jbiomech.2010.08.022

Cited by 34 publications

(20 citation statements)

References 48 publications

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“…It is possible however that significant viscoelastic recovery occurs over a longer period of time or that viscous behaviour may be more significant in other tissues and/or species. For example viscoelasticity has been observed to be important in fracture models of ventricular tissue (Forsell and Gasser, 2011). It would be possible to introduce a viscous effect to modify the permanent deformations by modifying the inelastic stress tensor S IN to incorporate non-equilibrium stresses, similar to viscoelastic models in the literature (Pena et al, 2010;Peña et al, 2008;Simo, 1987).…”

Section: Discussionmentioning

confidence: 99%

“…Other approaches to modelling stress softening include pseudoelastic constitutive models (Franceschini et al, 2006;Pena and Doblare, 2009) or multi-mechanism models that describe failure or deactivation of tissue components (Li and Robertson, 2009;Wulandana and Robertson, 2005). Models of soft tissues have also considered fracture and viscoelastic dissipation in front of the crack tip to describe failure in the tissue (Forsell and Gasser, 2011).…”

Section: Introductionmentioning

confidence: 99%

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An anisotropic inelastic constitutive model to describe stress softening and permanent deformation in arterial tissue

Maher

Creane

Lally

et al. 2012

Journal of the Mechanical Behavior of Biomedical Materials

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This is a PDF file of an unedited manuscript that has been accepted for publication. As a service to our customers we are providing this early version of the manuscript. The manuscript will undergo copyediting, typesetting, and review of the resulting proof before it is published in its final form. Please note that during the production process errors may be discovered which could affect the content, and all legal disclaimers that apply to the journal pertain.A n anisotropic inelastic constitutive model to describe stress softening and permanent deformation in arterial tissue A bstractInelastic phenomena such as softening and unrecoverable inelastic strains induced by loading have been observed experimentally in soft tissues such as arteries. These phenomena need to be accounted for in constitutive models of arterial tissue so that computational models can accurately predict the outcomes of interventional procedures such as balloon angioplasty and stenting that involve non-physiological loading of the tissue. In this study, a novel constitutive model is described that accounts for inelastic effects such as Mullins-type softening and permanent set in a fibre reinforced tissue. The evolution of inelasticity is governed by a set of internal variables. Softening is introduced through a typical continuum damage mechanics approach, while the inelastic residual strains are introduced through an additive split in the stress tensor. Numerical simulations of aorta and carotid arterial tissue subjected to uniaxial testing in the longitudinal, circumferential and axial directions reproduce the anisotropic inelastic behaviour of the tissue. Material parameters derived from best-fits to experimental data are provided to describe these inelastic effects for both aortic and carotid tissue.

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Section: Discussionmentioning

confidence: 99%

Section: Introductionmentioning

confidence: 99%

An anisotropic inelastic constitutive model to describe stress softening and permanent deformation in arterial tissue

Maher

Creane

Lally

et al. 2012

Journal of the Mechanical Behavior of Biomedical Materials

View full text Add to dashboard Cite

show abstract

“…Nonetheless, bilinear tractionseparation laws have been recently applied to model the failure of soft biological tissue. Forsell and Gasser [48] performed a FE simulation of failure of ventricular tissue due to deep penetration utilizing a bilinear traction-separation law. In this study, dissipative effects and material nonlinearity had a minor impact on the simulation results.…”

Section: Discussionmentioning

confidence: 99%

Computational Investigation of Fibrin Mechanical and Damage Properties at the Interface Between Native Cartilage and Implant

Vahdati

Zhao

Ovaert

et al. 2012

Journal of Biomechanical Engineering

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Scaffold-based tissue-engineered constructs as well as cell-free implants offer promising solutions to focal cartilage lesions. However, adequate mechanical stability of these implants in the lesion is required for successful repair. Fibrin is the most common clinically available adhesive for cartilage implant fixation, but fixation quality using fibrin is not well understood. The objectives of this study were to investigate the conditions leading to damage in the fibrin adhesive and to determine which adhesive properties are important in preventing delamination at the interface. An idealized finite element model of the medial compartment of the knee was created, including a circular defect and an osteochondral implant. Damage and failure of fibrin at the interface was represented by a cohesive zone model with coefficients determined from an inverse finite element method and previously published experimental data. Our results demonstrated that fibrin glue alone may not be strong enough to withstand physiologic loads in vivo while fibrin glue combined with chondrocytes more effectively prevents damage at the interface. The results of this study suggest that fibrin fails mainly in shear during off-axis loading and that adhesive materials that are stronger or more compliant than fibrin may be good alternatives due to decreased failure at the interface. The present model may be used to improve design and testing protocols of bioadhesives and give insight into the failure mechanisms of cartilage implant fixation in the knee joint.

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“…Experimental data suggest that the myocardium is anisotropic (with the highest stiffness in the direction of the fiber's longitudinal orientation), non-linear, nearly elastic and exhibiting heterogeneity throughout a particular chamber (e.g. RV) [9].…”

Section: Modeling Of Rv Perforationmentioning

confidence: 99%

Mechanism and Management of Pacing Lead Related Cardiac Perforation

Kumar¹,

Yassin²,

Esan³

et al. 2012

Current Issues and Recent Advances in Pacemaker Therapy

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Numerical simulation of the failure of ventricular tissue due to deep penetration: The impact of constitutive properties

Cited by 34 publications

References 48 publications

An anisotropic inelastic constitutive model to describe stress softening and permanent deformation in arterial tissue

An anisotropic inelastic constitutive model to describe stress softening and permanent deformation in arterial tissue

Computational Investigation of Fibrin Mechanical and Damage Properties at the Interface Between Native Cartilage and Implant

Mechanism and Management of Pacing Lead Related Cardiac Perforation

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