Topic: Convergence Issue (ASAP Please)

Dear Atena users,

I am an undergraduate student pursuing my thesis, "Finite Element Modelling of Residual Tensile Behaviour of Fibre-Reinforced Shotcrete." The aim is to validate a preliminary study conducted by Foster et al. (2020) under Australian Standards (AS3600-2018).

The model includes half a dogbone (taken along the thickness), and the material prototype used is "CCNonLinCementious2User." Based on my research, I have defined the relevant parameters and boundary conditions according to AS3600-2018

It works fine until the non-linear part of the analysis. I have tried troubleshooting, reducing the mesh size, and increasing the step duration to no avail.

If you need more information, feel free to ask. I am completely stumped. sad

Kind regards
Naveen