I’m interested in using the model for simulating excavations in clay, where the small strain modulus is important, and the analysis has to be transient consolidation. It would be helpful to have access to drained and undrained triaxial compression tests such as come with Flac3D code, which has the plastic hardening model built in with small-strain option. Does anyone know of input files that have been preconfigured for such tests/calibrations? Thanks a lot,
Tags: abaqus Element Test hypoplasticity UMATRelated Articles
-
Abaqus UEL Hypoplasticity
Dear all, I want to implement a new user element using the UEL subroutine. To simulate dynamic cases, one has to define the mass, damping and stiffness matrix then build […] -
SImulation with hypoplastic model for granular materials in ABAQUS
Hello, I want to use the hypoplastic model for granular materials downloaded from https://soilmodels.com/download/plaxis-umat-hypoplas-zip. The UMAT file umat.for is the model for sand. I followed the instruction https://web.natur.cuni.cz/uhigug/masin/plaxumat/node5.html. I have […] -
Book “Modelling of soil behaviour on hypoplasticity” has been published
Hardcopies of my new book “Modelling of Soil Behaviour with Hypoplasticity – Another Approach to Soil Constitutive Modelling” just arrived. The book is available for hardcover or pdf orders at https://www.springer.com/us/book/9783030039752 -
CEL analysis using hypo plasticity Vumat
Greetings i used interface Vumat with Umat for simulating CEL problem, after 50% of analysis, i got the error as “Excessive incremental rotation of the elements in element set ” […] -
boundary surface plasticity
Hello all, I am trying to implement boundary surface plasticity using Bardets model in MATLAB. But i am obtaining negative values for q and Dep. Any help in this regard […] -
Hypoplastcity sand model
Not able to run the subroutine ……..error is coming ……UMAT: illegal (negative) actual void ratio detected Can anybody help -
SANISAND 2008 Model
Hello Everyone, Can anyone have umat available for SANISAND 08 (Simple anisotropic sand plasticity model)?. Paper authored by Taiebat and Dafalias. They have used a closed type yield surface. Regards […] -
Hypoplastic UMAT & Void Ratio
Hi all, Can anyone give a clarification on the material property (parameter 22) in the hypopplasticity umat for clay on Abaqus. My understanding is that these parameters are defined as […]
0 Comments
Supporting Organisations
Recent posts
-
Presentations from Prague Geotechnical Days 2023 including 29th Prague Geotechical Lecture by Yannis Dafalias 25.5.2023
-
Problem in using Hypoplastic model for sand in Abaqus. 17.5.2023
-
An error in the SANISAND umat runtime 8.5.2023
-
Htypoplastic Model in Miidas GTS NX 25.4.2023
-
set cavitation limit in ABAQUS/STANDARD when using SANISAND umat 2.4.2023
-
FE formulation and software 25.3.2023
-
Multi-objective analysis of the Sand Hypoplasticity model calibration 24.3.2023
-
Problem with SANISAND UMAT 7.3.2023
-
Prague Geotechnical Days 2023 (22nd – 23rd of May) with Prague Geotechnical Lecture by prof. Yannis Dafalias 28.2.2023
-
What is an appropriate damping model for dynamic liquefaction analysis of tailings storage facility in FLAC? 10.2.2023
-
Abaqus vs Plaxis – Local Convergence Tolerances 2.2.2023
-
Zbraslav sand – Cyclic tests by Charles University 17.1.2023