Dear PhD,
I am studying roller vibrations on sandy soil models with vumat. Can PhD give me the subroutine model and input parameters of objects for reference?
Unit of the subprogram used?
Many thanks.
Hoang An
Related Articles
-
Difficulties in calibration of triaxial test on Hochstetten sand by sand Hypoplasticity model
“A hypoplastic relation for granular materials with a predefined limit state surface” paper by P. A. Von Wolffersdorff April 1996 include a triaxial test result of sample 10cm diameter and […] -
Hypoplastcity sand model
Not able to run the subroutine ……..error is coming ……UMAT: illegal (negative) actual void ratio detected Can anybody help -
Spurious oscillations in calculated accelerations
Hello everyone, I have just a general question how people approach the problem of spurious oscillations generated in dynamic analysis when using nonlinear soil constitutive models. I understand sometimes numerical […] -
General Questions Hypoplastic Umat on Abaqus
Hi all, After successfully testing a linear elastic Umat on Abaqus, I am now trying to test the Hypoplastic model Umat. I intend to carry out a drained triaxial single […] -
ExCalibre Automatic Calibration
Hello all, i have another question regarding the calibration process. Why do the initial void ratios differ between the input file and the output from excalibre? What is done during […] -
Undrained Tests with Basic Clay Hypoplasticity
Hi Prof. David, I have obtained these results in that attached picture using Triax and got confused when seeing that an isotopically normally consolidated sample does not follow a trend […] -
ALERT Geomaterials – SoilModels support declaration
ALERT Geomaterials (The Alliance of Laboratories in Europe for Education, Research and Technology) is a European organisation including 33 Universities or Organisations, which are most active in the field of numerical […] -
Triaxial Callibration test with Hypoplasticity
Dear all I am trying to calibrate the HP for sand, and I have quite comprehensive data. but they are not totally consistent with each other . we have the […]
Supporting Organisations
Recent posts
Who is Online
Dear Hoang, I am not sure whether I understood correctly your question. In any case, vumat implementation for hypoplastic model is here: https://soilmodels.com/download/vumat_umatinterface-zip/. Please study the related references to find example parameter sets. Regards David
Dear David Mašín,
I am a new user of abaqus. Good, Dr. can give me an example of a complete soil model using vumat for hypoplastic model.
Thank you very much, Dr. for example .inp and .for files.
mail: sg-thaihoangan@e-university.edu.vn
Best regards
Hoang An,