How to consider non-linear creep coefficient to the model as per code that is not available in Midas data base?


we can create user defined Creep function using Properties > Time Dependent Material > User Define

Then, in the Properties > Creep / Shrinkage tab, add the defined coefficient:

However, there is one restraint. 
For user-defined creep to accurately calculate creep effects at least 15 functions need to be defined for different ages of loading. Only then does the software takes the value of the creep coefficient correctly and also interpolates accordingly.

First minimum 15 functions for different loading would be defined : 
Sample below:

Then these function would be linked to creep/shrinkage properties. 

We have attached a small file for your reference.
Note that it is just a sample for Creep user defined function and the values mentioned are not to be taken at face value.

Creation date: 3/22/2022 12:58 PM      Updated: 9/12/2023 12:26 PM
EC2 Clause 3.1.4(4) Nonlinear Creep Coefficient.PNG
96 KB
I beam-CEB-user_2 cases - Copy.mcb
78 KB
126 KB
104 KB
53 KB