The constitutive models PM4Sand (Boulanger and Ziotopoulou 2017) and PM4Silt (Boulanger and Ziotopoulou 2018) for plane-strain earthquake engineering applications for sands, and clays and low-plasticity silts respectively are now available through Soilmodels. The links provided lead to the websites of the two models where users can find their manuals, the dlls (compiled dynamic link libraries for use with FLAC8 with cppudm and dynamic options), some example single-element drivers for four different loading conditions, as well as pertinent publications that demonstrate their use in different applications.
Tags: earthquake engineering flac liquefaction pm4sand pm4siltPM4Sand and PM4Silt models available
Related Articles
-
Non-local regularization: Need VUMAT of Mohr-Coulomb model in abaqus
Kunal Sanjay Pardikar||Constitutive Modelling|1 |Views 4,627
Dear Community, I want to include a non-local regularization technique in the built-in Mohr-Coulomb model of abaqus to capture the strain-localization effects. I am trying to find the original VUMAT […] -
Input files for element tests for hypoplastic clay/sand UMAT
Juan Tello||Constitutive Modelling|0 |Views 3,758
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 […] -
Getting started with UMAT for Hypoplastic clay model in ABAQUS
Kanika Lamba||Constitutive Modelling|0 |Views 4,385
Hello All, I am getting started with implementing UMAT for soil model in ABAQUS. I am planning to use Hypoplastic clay constitutive soil model to simulate the triaxial tests. I […] -
Hardening parameters (yield stress & absolute plastic strain)
Amir Mohammad Yarahmadi||Constitutive Modelling|4 |Views 5,665
Hi to everyone I want to model a Sand with Cap plasticity or Drucker Prager failure criterion in ABAQUS, and I have the result of Triaxial test (I’ve attached the […] -
Difficulties in calibration of triaxial test on Hochstetten sand by sand Hypoplasticity model
AKSHAY SAKHARE||Constitutive Modelling|2 |Views 4,480
“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 […] -
-
ALERT doctoral school on constitutive modelling – hands on session triax input files
David Mašín||Constitutive Modelling|0 |Views 4,343
ALERT doctoral school on constitutive modelling is happening right now. The school lecture notes are available at the website of ALERT geomaterials (http://alertgeomaterials.eu/publications/) Below you find triax input files for […] -
Hypoplastic sand-mr parameter calibration
anis kheffache||Constitutive Modelling|2 |Views 4,103
Dear all, I have a question about Hypoplasticity for sand model, i am having trouble to understand about how to calibrate the mr parameter ? Since no formula is provided […]
Who is Online
No one is online right now
Search SoilModels Website
Recent posts
- Degradation ( disturbance ) of hypoplastic clay 23.4.2024
- Degradation ( disturbance ) of hypoplastic clay 23.4.2024
- Paper of Coulomb, C. A. (1773) 15.4.2024
- ABAQUS UMAT of hypoplastic clay model 6.4.2024
- Prague Geotechnical Days 2024 “Geotechnical monitoring” and 30th jubilee Prague Geotechnical Lecture by prof. Eduardo Alonso 5.4.2024
- UMAT for Creep-SCLAY model. 1.3.2024
- Cyclic tests with Triax element test driver 14.2.2024
- SUMMER SCHOOL ‘Numerical Modelling in Geotechnical Engineering’, Innsbruck – July 22nd-26th, 2024 1.2.2024
- COURSE IN SOIL MODELING – NTNU, Trondheim – October 14th to 18th, 2024 21.12.2023
- MSE walls design in Plaxis 11.12.2023
- sand liquefaction modelling in Anura3D 8.12.2023
- BCV bentonite experimental and modelling datasets 14.11.2023
Recent Comments
- Jh Xue on UMAT Implementation in Abaqus (Hypoplastic clay Subroutines)
- Santosh Katuwal on PM4Sand for Plaxis Download
- KHA DIDJA on SANISAND Abaqus UMAT and Plaxis implementations
- Debdip Das on SANISAND Abaqus UMAT and Plaxis implementations
- Ramon Varghese on SANISAND for FLAC3D Download
- Akhtyar Gul Shirzoi on ABAQUS UMAT of hypoplastic clay model
- KHA DIDJA on Animating Soil Models
- Jh Xue on Undrained Tests with Clay Hypoplasticity Intergranular
- Zhentao Liu on Problem in simulating CPT using SANISAND04
- Gertraud Medicus on ABAQUS UMAT of hypoplastic clay model
- Chen Zhiming on Download Package of Charles University Implementation of High Cycle Accumulation Model
- Konstantinos Chatzis on Cyclic tests with Triax element test driver
- Abhay Pratap Singh on Cyclic tests with Triax element test driver
- Giovanni Ciardi on Cyclic tests with Triax element test driver
- Konstantinos Chatzis on Cyclic tests with Triax element test driver
- Ismail Khan on Cyclic tests with Triax element test driver
- Kanika Lamba on Cyclic tests with Triax element test driver
- Arie Koot on How to model the settlement in soil due to water drawdown.
Hi Katerina
Do you have any plans of implementing PM4Sand and PM4Silt into the upcoming FLAC2D 10.0 update?
Unfortunately I only have access to a trial of FLAC 8.1 until the new version releases and it appears that a lot of the code and fish functions will be updated. I fear that the UDMMs will not be compatible with the new version.
I have been playing with the PM4Sand UDMM and the auto drivers you wrote to try and calibrate some CDSS tests on gold tailings (incidentally are there CDSS auto drivers written for PM4Silt?). Thanks a lot for the great contributions!
Paul
Hi Paul!
Thanks for the post and the kind words.
You are right. UDMs will not be compatible. Not even udms compatible with FLAC3D Version 7. Yes, I am already working on it. My only obstacle right now is that Itasca (at least in the beta version I tried in the summer) had not updated the MSVC libraries for compiling udms for FLAC2D and there was no final formal manual for me to understand a bit more about the zones and subzones in order to appropriately handle the mixed discretization. Once they release that, Ross and I should be relatively quick to release a udm and then update all the drivers and figures etc.
I am also working on the autodrivers for PM4Silt. Will post on my github when done and share news on LinkedIn and twitter.
Warm regards,
Katerina
You’re a legend! I can’t wait.
Hi Katerina
Have you had a chance to look at the new Itasca Suite V9? I have had some time with the new FLAC2D and it was pleasantly familiar to me coming from FLAC3D v7.
Having looked into it further, I now better understand your comment regarding handling the mixed discretization in FLAC2D. I suspect (or hope at least) that building UDMs for the new FLAC2D will follow the same principles as that of FLAC3D (even the older v7) and omitting the third coordinate where appropriate, since the 2D and 3D versions share the same models.
Are there still plans to work on a PM4Silt UDM for the newer version of FLAC2D?