There are two earlier posts that give some insight into this creep calibration exercise:

In this post, we want to:

1. Show the use of a Custom Schema xml file to enhance the Calibration App's UI for user input of creep parameters.
2. Show the use of a Creep user-subroutine.
3. Show the use of four calibration cases to compare native vs user-sub creep and to compare time vs strain hardening.

Recall that the motivation to use FE mode is so that we can impose a stress and plot results of strain, analogous to the way the creep test is performed. The Abaqus models used are all unit-cubes, so they run very fast.  All files needed to re-produce this example are attached to this post in a zip file.  Units are N, mm, MPa.  This work is performed using R2024x HotFix 3.10 on May, 11, 2024.

1) set units to N, mm, MPa
2) import all the Makrolon creep data    (import & open the file Makrolon_RT_Creep_User_just_data_FE.3dxml to start here).
3) import the FE models
4) map all FE outputs -> test data. Use U3 FE output to map to strain test data. 
5) define the two native cases, for Strain hardening and Time hardening. 

6) define the two user-sub cases
7) for CREEP User cases, import standardU.dll
8) for CREEP User cases, import custom schema

In this first video, we walk through the steps 3 - 5

Here is what things look like at the end of the first video..

The second video performs steps 6, 7, 8, creating the two calibration cases using the creep user-subroutine

Here is what things look like at the end of the second video..

The zip file below contains all the files needed to re-create this example workflow.

Back to:  Sharing Material Test Data

Back to:  Material Modeling and Calibration - An Overview and Curriculum