Specifying combined test data

Create a viscoelastic material model as described in Defining time domain viscoelasticity” or Defining frequency domain viscoelasticity.”

From the Test Data menu in the Edit Material dialog box, select Combined Test Data.

A Test Data Editor appears.

In the Long-term normalized shear compliance or modulus field, enter either the long-term, normalized shear compliance, $j_S\left(\mathrm{\infty }\right)$, for creep test data or the long-term, normalized shear modulus, $g_R\left(\mathrm{\infty }\right)$, for relaxation test data.

In the Long-term normalized volumetric compliance or modulus field, enter either the long-term, normalized volumetric compliance, $j_K\left(\mathrm{\infty }\right)$, for creep test data or the long-term, normalized volumetric modulus, $k_R\left(\mathrm{\infty }\right)$, for relaxation test data.

In the Data table, enter the following data:

js or gR

The normalized shear compliance, $j_S\left(t\right)$, ( $\left(j_S\left(t\right)\ge 1\right)$) for creep test data or the normalized shear relaxation modulus, $g_R\left(t\right)$, ( $\left(0\le g_R\left(t\right)\le 1\right)$) for relaxation test data.

jK or kR

The normalized volumetric compliance, $j_K\left(t\right),(j_K\left(t\right)\ge 1)$, for creep test data or the normalized volumetric modulus, $k_R\left(t\right),(0\le k_R\left(t\right)\le 1)$, for relaxation test data.

Time

Time, t. $\left(t>0\right)$

For detailed information on how to enter data, see Entering tabular data.

Click OK to return to the Edit Material dialog box.