Strain-dependent internal parameters in hyperelastic biological materials

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2 Citations (Scopus)


The behavior of hyperelastic energies depending on an internal parameter, which is a function of the deformation gradient, is discussed. As an example, the analysis of two models where the parameter describes the activation of a tetanized skeletal muscle tissue is presented. In those models, the activation parameter depends on the strain and it is shown the importance of considering the derivative of the parameter with respect to the strain in order to capture the proper stress–strain relations.
Original languageEnglish
Pages (from-to)162-167
Number of pages6
JournalInternational Journal of Non-Linear Mechanics
Publication statusPublished - 2017


  • Active strain
  • Biomechanics
  • Hyperelasticity
  • Skeletal muscle tissue


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