VUMAT

Source: https://jerugroup.eng.ox.ac.uk/software/vumat Parent: https://jerugroup.eng.ox.ac.uk/software

VUMAT: Constitutive Model for Soft Biological Tissues

This code provides the explicit implementation of a constitutive model to define the mechanical behaviour of soft tissues. The model is developed within a thermodynamically consistent framework, provides energetic variables that can be linked to other physics of soft tissues (such as electrophysiology) and includes the following features

Main features of the code:

• Implemented in a VUMAT material subroutine for Abaqus/Explicit
• Uncoupled volumetric and isochoric responses
• Developed for finite deformations
• Strain rate dependency
• Continuum damage
• Can be used to relate mechanical deformation to other physical phenomena through energetic terms, such as alterations in electrophysiological responses

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Relevant publications

• D. Garcia-Gonzalez and A. Jérusalem. Energy based mechano-electrophysiological model of CNS damage at the tissue scale. Journal of the Mechanics and Physics of Solids, 125:22-37, 2019.\ DOI:10.1016/j.jmps.2018.12.009