Add Non-linear Material Data

Specify plastic material data for use with a non-linear analysis.

If you have chosen to use an elastic-plastic material model, the associated non-linear material data is required. You may enter specific non-linear material data if it is available to you, otherwise Advanced Material Exchange will provide a generic non-linear data set based on the family grade of the material.

If you choose to specify the non-linear data, you must enter it in the order of stress, strain, angle, and temperature with semi-colons, colons, or tabs as separators. To do so:

  1. Click Material > Add > Add Non-Linear Material.
  2. Key in your data or copy and paste it from an Excel or text file.
  3. Specify the appropriate units for your data.
  4. If you do not have data for each column, you may leave it blank by using consecutive separators.
The data shown in the image below was pasted into the window as follows: 
0;0;0;23
17.5;0.0015;0;23
35;0.003;0;23
52.5;0.0046;0;23
70;0.00625;0;23
100;0.0095;0;23
125;0.01275;0;23
150;0.016;0;23
168;0.01925;0;23
180;0.0225;0;23

Note: The 2015 release of Advanced Material Exchange only supports data entry at angles of 0, 45, and 90 degrees. Data for each angle must contain between 15 and 50 data points, with at least one point in the elastic range of the material.

Be sure to specify the units for any data you enter. Stresses may be entered in (MPa) or (psi), angles can be entered in radians or degrees, and temperatures can be entered in Kelvin, Celsius, or Fahrenheit.

At the bottom of the dialog, click Add Material Test Information to enter details about the physical testing process.

Personal Database

If you commonly use the same material for your analyses, you may store the non-linear data in a personal database in Moldflow to avoid adding the data each time Advanced Material Exchange is used. The non-linear data will be saved with the material when it is imported into Advanced Material Exchange.

To create a personal database file after you have added the non-linear stress and strain data:
  1. Click Material > Export > Export Material Data.
  2. Save the file to your Moldflow Synergy materials directory (usually C:\Program Files\Autodesk\Simulation Moldflow Synergy 2015\data\udb).
  3. Open a Moldflow Insight model and select the material (Home > Molding Process Setup > Select Material).
  4. Locate the manufacturer and choose the appropriate trade name for the .udb file you just saved.

Now this material has the Ramberg-Osgood parameters stored, so when you import your model into Advanced Material Exchange you won't need to add the non-linear stress-strain data.

Parent topic: User's Guide