Question:
When defining my material, I get Warning No. 1136 and cannot continue working. How can I prevent this warning?
Answer:
Warning No. 1136 ("During the calculation of material nonlinearity, the material with a decreasing branch of the diagram can be calculated with one load increment only") refers to the entries in the global calculation parameters.
In our example file, the number of load increments has been set globally to 10 for load cases and load combinations:
For this material, only one load increment can be expected. If you adjust the number of load steps for load cases and load combinations globally to 1, you can define your material: