I am trying to reproduce a TX test on a sand by using a FE 1-element, axisymmetric geometry ABAQUS model, assigned to a SANISAND material. For this purpose, I am using a umat subroutine that is made available at soilmodels.com (https://soilmodels.com/download/plaxis-umat-sanisand/)
In my ABAQUS model, I have set a material with 36 state variables and 19 parameters, as suggested by the developers of the subroutine. The only additional feature of the material is the density, set = 1 (ton/m^3). The adopted element type is axisymmetric stress, hybrid formulation (CAX4H). A confinement load of 100 (kPa) is applied to the two boundaries of the soil element along a "confinement" and a "shear" static steps of analysis. During the "shear" step, I applied a vertical (axial) displacement of the upper boundary of the sample, producing a deviatoric stress.
I properly linked the subroutine to the job in the "General" option of the job menu.
When I run the job, an error occurs before the analysis is run reporting "Abaqus/Standard Analysis exited with an error - Please see the message file for possible error messages if the file exists."
Riccardo Zabatta To check the error of your simulation, print line-by-line to find the mistake in the calculation.
If you are a beginner in writing subroutine check this article:
https://caeassistant.com/blog/start-writing-your-1st-umat-in-abaqus-foundation/
- Badges
- Science topic
- Similar topics
- Filing