Hello guys. I just tried to calibrate on soilmodels. I´ve done three CIUP-REC-test plus one oedometric test. As you can see in the images, that there is still something quite wrong. Can someone help me with a clue please? ps. The Image Shows only two CIUP-REC, thats because i tried to detect my mistake
Vibration foundation behavior 16.10.2021
Getting started with UMAT for Hypoplastic clay model in ABAQUS 15.10.2021
consistent tangent stiffness calculation in hypoplasticity sand UMAT 7.10.2021
stress order in hypo umat seems to be incorrect 6.10.2021
ALERT doctoral school on constitutive modelling – hands on session triax input files 2.10.2021
Initial Stiffness of CU test in Masin’s 2014 Model 29.9.2021
CONSTUTUTIVE MODELLING 22.9.2021
Compatibility of subroutines in ABQ2021 17.9.2021
Hypoplasticity sand convergence issues 17.9.2021
MATLAB Code for Bounding Surface Plasticity Model 17.9.2021
Non convergence problem in abaqus using hpoeca Clay Hypoplasticity in slope model 16.9.2021
UMAT file for POROELASTICITY 31.8.2021
©2021 SoilModels
Hi Axel, in fact, your experimental results are quite untypical, as dilatancy starts from the very beginning of the shear experiments (normally, certain compression takes place first, as predicted by the model). I am not sure whether there could be some experimental issue in this but in any case I would consider predictions quite good, it would be probably quite hard to get better predictions using manual calibration. You can try to compare both sand and clay models to see the difference.
Thanks for your quick reply. Ich changed the signes because the template says that dilatancy should be negative. So after changing it the other way around I got still the same results. I was wondering, why it doesnt show anything in the strain chart?
It is undrained test, right? So volume strains are zero
That´s right. Thanks a lot
Kind regards