Elastomer Library

The elastomer library contains the following subroutines.  Each of these models provides unique and powerful predictions for different classes of elastomers, rubbers, and biopolymers.  Each material model is available for both implicit and explicit finite element simulations.

Material Model Name Description
Linear Elastic Model
Linear Elastic (LE
Linear elastic model that also incorporates the PolyUMod failure models.
Neo-Hookean Model
Neo-Hookean (NH)
Neo-Hookean hyperelastic model that supports the PolyUMod failure models.
Eight-Chain Model
Eight-Chain (EC)
Arruda-Boyce eight-chain hyperelastic model that supports the PolyUMod failure models [J. Mech. Phys. Solids, 41, 389-412, 1993].  Uses a more accurate implementation of the inverse Langevin function than most other commercial implementations.
Anisotropic_Eight-Chain Model
Anisotropic Eight-Chain (AEC)
Anisotropic version of the eight-chain model [Bischoff et al, Trans. ASME, 69, 570-579, 2002].
  • Supports different failure models
Bergstrom-Boyce Model
Bergstrom-Boyce (BB)

Advanced material model for elastomers, rubbers, and soft biological tissues [Mech. Materials, 33, 523-530, 2001].

Adds functionality to the built-in option in ABAQUS/Implicit and ANSYS.
  • Temperature effects
  • Available for ABAQUS/Explicit
  • Supports different failure models
BB_Mullins Model
BB Mullins (BBM)
Same as standard BB model, but also includes the Ogden-Roxburgh Mullins model [Proceedings of the Royal Society of London, Series A, 455, 2861-2877, 1999].

Adds functionality to the built-in *Hysteresis option in ABAQUS/Implicit.
  • Temperature effects
  • Mullins effect
  • Available for ABAQUS/Explicit
  • Supports different failure models
Anisotropic BB Mullins Model
Anisotropic BB Mullins (ABBM)
Same as the BBM model but is using the Bischoff anisotropic eight-chain model.
  • Temperature effects
  • Anisotropic
  • Mullins effect
  • Available for explicit simulations
  • Supports different failure models
Dynamic Bergstrom-Boyce Model
Dynamic Bergstrom-Boyce (DBB)
Same as the BBM model but contains additional features to enable accurate predictions of both small-strain dynamic behavior and large-strain behavior using one set of material parameters.
  • Temperature effects
  • Small strain dynamic behavior
  • Mullins effect
  • Supports different failure models
Parallel_Network Model
Parallel Network (PNM)

Advanced model that contains an arbitrary number of elastic and flow elements connected in parallel.

Suitable for large deformation, thermomechanical predictions of many different classes of polymers.
  • Supports different failure models

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