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Updated: Oct 4, 2025

A Coupled Experiment-finite Element Modeling Methodology for Assessing High Strain Rate Mechanical Response of Soft Biomaterials
Published on: May 18, 2015
Numerical simulation data and FORTRAN code to compare the stress response of two transversely isotropic hyperelastic
Carlos Castillo-Méndez1, Armando Ortiz1
1Departamento de Diseño y Manufactura, Facultad de Ingeniería Edif. O, Universidad Nacional Autónoma de México, Av. Universidad 3000, Delegación Coyoacán, CP 04510, Ciudad de México, México.
Abstract:
We present the numerical simulation data obtained by implementing a user material subroutine (UMAT) in the finite element commercial package ABAQUS. The simulation data correspond to the stress response of two transversely isotropic hyperelastic models on homogeneous and non-homogeneous deformations. First model is proposed in the co-submitted article [1] and depends on both anisotropic invariants ( and ) to describe the fiber reinforcement. The second model is the Holzapfel-Gaser-Ogden (HGO) model described in [2], that only depends on the anisotropic invariant . Since the first model is not found in the ABAQUS material library, we present a FORTRAN code for a UMAT subroutine. In addition, we introduce in detail the steps to implement the material models using the attached files in ABAQUS.
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