第1个回答 2012-06-27
visco-elasticity取决于你采用什么样子的模型。目前ABAQUS支持如下的物理模型。每个模型需要设置的参数是不一样的。参见*VISCOELASTIC关键字。
*VISCOELASTIC: Specify dissipative behavior for use with elasticity.
This option is used 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 Abaqus/CAE
Type: Model data
Level: Model
Abaqus/CAE: Property module
References:
• “Time domain viscoelasticity,” Section 21.7.1 of the Abaqus Analysis User’s Manual
• “Frequency domain viscoelasticity,” Section 21.7.2 of the Abaqus Analysis User’s Manual
• *COMBINED TEST DATA
• *SHEAR TEST DATA
• *TRS
• *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 material’s longterm
elasticity must be defined using the *ELASTIC or the *HYPERELASTIC option.
Set FREQUENCY=CREEP TEST DATA to define the frequency domain 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 dissipativematerial 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 parameters.
Set FREQUENCY=RELAXATION TEST DATA to define the frequency domain response
using a Prony series representation of the relaxation moduli, if the Prony series parameters are to
be computed from shear and volumetric relaxation test data.
Set FREQUENCY=TABULAR to provide tabular definition of the frequency domain
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