3D Connexion Version 6.6 manual

*MULLINS EFFECT
13.23 *MULLINS EFFECT: Specify Mullins effect material parameters for elastomers.
This option is used to define material constants for the Mullins effect in fi lled rubber elastomers or for
modeling energy dissipation in elastomeric foams. It can be used only with the *HYPERELASTIC or the
*HYPERFOAM options.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model data
Level: Model
References:
•“Hyperelasticbehavior of rubberlike materials,” Section 17.5.1 of the ABAQUS Analysis User’s Manual
•“Hyperelastic behavior inelastom ericfoam s,”Section 17.5.2 of the ABAQUS Analysis User’s Manual
•“Mullins effect in rubberlikematerials,” Section 17.6.1 of the ABAQUS Analysis User’s Manual
•“Energy dissipationin elastomeric foams,” Section 17.6.2 of the ABAQUS Analysis User’s Manual
•“UMULLINS,” Section 1.1.35 of the ABAQUS User SubroutinesReference Manual
•*BIAXIAL TEST DATA
•*PLANAR TEST DATA
•*UNIAXIAL TEST DATA
Optional, mutually exclusiveparameters:
TEST DATAINPUT
Include this parameter if the material constants are to be computed byA BAQUS from data taken
from simple tests on a material specimen . If this parameter is omitted in A BAQUS/Standard, the
material constants may be given directly on the data lines or the damage variable may be defined
through user subroutine UMULLINS. If this parameter is omitted in ABAQUS/Explicit, the material
constants must be given directly on the data lines.
USER
This parameter applies only to ABAQUS/Standard analys es.
Include this parameter if the damage variable defining the Mullins effect is defined in user
subroutine UMULLINS.
Optional parameters:
BETA
This parameter can be used only when the TEST DATA INPUT parameter is used; it defines the
value of while the other coefficients of the Mullins effect model are fitted from t he test data. It
13.23–1
ABAQUS Version 6.1 Module: ID:
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