Defining Response Data

You can define response data to extrapolate material response beyond the range of your imported test data.

You can define a single curve for range response data in the time domain or frequency domain. For time domain data, you can also specify a monotonic family of curves or a relaxation family of curves.

This task shows you how to:

Define a Single Curve

You can define a single range response curve with various options.

  1. From the Calibration Tools section of the action bar, click Range Based Response
    The Range Based Response dialog box opens.
  2. Specify a descriptive Name for the range response data.
  3. From the Domain options, specify whether the range response data is based on Time or Frequency.
  4. From the Test type options, specify the deformation type.
    • For data in the time domain, you can specify uniaxial tests, biaxial tests, planar tests, simple shear tests, or volumetric tests.
    • For data in the frequency domain, you can specify uniaxial tests or torsional tests.
  5. For time domain data, specify the Driver type for the range response data. You can specify nominal strain, strain, or volume ratio.
  6. From the Generation type options, select Single curve.
  7. Specify the Number of points in the range and the Peak value.

    The starting value for time domain data is always zero.

  8. For data in the time domain, specify a Time method:
    OptionDescription
    Strain rate Define the Strain rate of the data.
    Time range Define the Time start value and Time end value for the time range.
  9. Specify the Temperature for the range response data.
  10. For time-based data, specify a Relaxation hold time.
  11. Optional: Check Include unloading to add unloading data to the range response curve.
  12. Click OK.

The app creates a single response only curve with the specified options.

Define a Monotonic Family of Curves

You can create a family of time domain monotonic curves with varying strain rates or temperatures.

  1. From the Calibration Tools section of the action bar, click Range Based Response
    The Range Based Response dialog box opens.
  2. Specify a descriptive Name for the range response data.
  3. From the Domain options, select Time.
  4. From the Test type options, specify the deformation type. You can specify uniaxial tests, biaxial tests, planar tests, simple shear tests, or volumetric tests.
  5. Specify the Driver type for the range response data as either nominal or true strain.
  6. From the Generation type options, select Family of curves.
  7. Set the Number of curves to the desired value.
  8. Set the Curve family type to Monotonic curves
  9. Specify the data points by setting the Peak strain for the data and the Number of points in the range. The starting value is always zero.
  10. Specify a Fixed quantity:
    OptionDescription
    Temperature Enter the Strain rate values in the table for each curve and specify the fixed Temperature.
    Strain rate Enter the Temperature values in the table for each curve and specify the fixed Strain rate.
  11. Specify the Temperature for the range response data.
  12. Optional: Check Include unloading to add unloading data to the range response curves.
  13. Click OK.

The app creates the specified number of monotonic response only curves with the specified options.

Define a Relaxation Family of Curves

You can create a family of time domain relaxation curves with varying peak strains.

  1. From the Calibration Tools section of the action bar, click Range Based Response
    The Range Based Response dialog box opens.
  2. Specify a descriptive Name for the range response data.
  3. From the Domain options, select Time.
  4. From the Test type options, specify the deformation type. You can specify uniaxial tests, biaxial tests, planar tests, simple shear tests, or volumetric tests.
  5. Specify the Driver type for the range response data as either nominal or true strain.
  6. From the Generation type options, select Family of curves
  7. Set the Number of curves to the desired value.
  8. From the Curve family type options, select Relaxation curves.
  9. Specify the Number of points in the range.
  10. Specify the Strain rate.
  11. Specify the Temperature for the range response data.
  12. Specify the Relaxation hold time.
  13. Select Fixed strain rate to apply the same strain rate to all the range response curves. If you do not select this option, the specified strain rate is be applied to the last specified curve, and all other curves ramp up to their specified peak strain in the same amount of time.
  14. Optional: Check Include unloading to add unloading data to the range response curves.
  15. Specify the Peak Strain for each of the relaxation curves being created.
  16. Click OK.

The app creates the specified number of relaxation response only curves with the specified options.