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VISCOELASTIC
21.4
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VISCOELASTIC: Specify dissipative behavior for use with elasticity.
This option is use d to generalize a material’s elastic response to include viscoelasticity. The viscoelasticity
can be defined as a function of frequency for steady-state small-vibration analyses or as a function of reduced
time for time-dependent analyses.
Products: ABAQUS/Standard ABAQUS/Explicit
Type: Model data
Level: Model
References:
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“Time domain viscoelasticity,” Section 17.7.1 of the ABAQUS Analysis User’s Manual
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“Frequency dom ain viscoelasticity,” Section 17.7.2 of the ABAQUS Analysis User’s Manual
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COMBINED TEST DATA
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SHEAR TEST DATA
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TRS
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VOLUMETRIC TEST DATA
Required, mutually exclusive parameters:
FREQUENCY
This parameter applies only to ABAQUS/Standard analyses.
Use this parameter to choose the frequency domain definition. In this case the m aterial’s long-
term elasticity m ust be defined using the
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ELASTIC or the
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HYPERELASTIC option.
Set FREQUENCY=CREEP TEST DATA to define the frequency dom ain response using
a Prony series representation of the relaxation moduli, if the Prony series parameters are to be
computed from shear and volumetric creep test data.
Set FREQUENCY=FORMULA to define the dissipative material parameters by the power law
formulæ.
Set FREQUENCY=PRONY to define the frequency domain response using a Prony series
representation of the relaxation moduli by specifying the Prony series param eters.
Set FREQUENCY=RELAXATION TEST DATA to define the frequency domain response
using a Prony series representation of the relaxation moduli, if the Prony series param eters are to
be computed from shear and volumetric relaxation test data.
Set FREQUENCY=TAB ULAR to provide tabular definition of the frequency domain
response.
21.4–1
ABAQUS Version 6.1 Module:
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