Sir, As a beginner of FRIC I am facing some difficulties to implement it. The downloaded FRIC code has been added to my pile soil friction model and trying to validate with the hypo plasticity model. I am confused about the input of hypo plastic properties. When i am giving the properties on User defined material properties i am getting the error as umat is not attached. Does this “FRIC .for” already included the umat.
Regarding FRIC : As a beginner
Related Articles
-
-
Hardening Soil Model in Abaqus
Abulimiti Ayizula||Constitutive Modelling|5 |Views 5,247
Is there Hardening Soil Model in Abaqus? -
Compile triax calibration software under windows
Hans Henning Stutz||Constitutive Modelling|1 |Views 4,270
1. Download install exe (32 or 64 bit) from https://cygwin.com/install.html 2. Choose a mirror site / click Next and select all packages you need for compiling: Type: “gcc” into search […] -
Difficulties in calibration of triaxial test on Hochstetten sand by sand Hypoplasticity model
AKSHAY SAKHARE||Constitutive Modelling|2 |Views 4,432
“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 […] -
Hypoplastic Model for Clays (Masin): Ag, ng or Gvh, n
Fernando Sarabia||Constitutive Modelling|1 |Views 5,073
Dr. Masin I have downloaded the most recent dll for Plaxis that includes the HypoPlastic model for Clays that you developed. I see two new parameters (Gvh0 and n), both […] -
SANISAND 2008 Model
MOHD SAQIB||Constitutive Modelling|0 |Views 3,881
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 […] -
Hypo-sand UMAT problem
sobhan abedinnejad||Constitutive Modelling|2 |Views 4,189
Dear community I have 4 Question in implementation of Hypo-sand Umat in ABAQUS could someone kindly explain? 1. I checked the Umat file from (https://soilmodels.com/download/plaxis-umat-hypoplas-zip/) and i understand this subroutine […] -
Sand Hypoplasticity calibration
Francisco Mendez||Constitutive Modelling|1 |Views 3,938
Good evening, everyone. I find it difficult to apply equations (13) and (14) of Herle’s publication “Determination of parameters of a hypoplastic constitutive model from properties of grain assemblies”. As […]
Who is Online
No one is online right now
Search SoilModels Website
Recent posts
- 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
- Challenges in simulating geomechanical models using Mohr-Coulomb with Tension Cut-Off in Abaqus 20.10.2023
- Analys soil liquefaction with Abaqus under blast load 19.10.2023
- Hardening soil Model UMAT 13.9.2023
- Problem with VUMAT interface 20.8.2023
- UMAT and oneAPI compiler issues. (SOLVED…i hope :p) 5.8.2023
Recent Comments
- 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.
- Konstantinos Chatzis on Cyclic tests with Triax element test driver
- Jose Duque on Cyclic tests with Triax element test driver
- MohamadReza Kamali on How to model the settlement in soil due to water drawdown.
- Leo Alibert on MSE walls design in Plaxis
- Ignacio Zuloaga on MSE walls design in Plaxis
- Giada Orlando on Problem with VUMAT interface
- Michael Spyridis on Problem with VUMAT interface
- Ahmad Moeineddin on Problem with VUMAT interface
- Nikolay Suyo Calla on Hardening soil Model UMAT
- Johan Clausen on Challenges in simulating geomechanical models using Mohr-Coulomb with Tension Cut-Off in Abaqus
Dear Arun,
I will try to answer all your questions and a bit more.
1. The file Fric_HPvW is only the contact model which have a coding interface using the UMAT as a constitutive driver for the contact. But there is no UMAT attached. What you can do is to simply copy the UMAT.for for the hypoplastic model and attach it to the FRIC_HPvW.for file.
2. The abbreviation Fric_HPvW refers to the Hypoplastic model from von Wolffersdorff that is for granular media. Keep this in mind if you want to model fine-grained interfaces.
3. Please have a look to the UMAT documentation, because the second property is a numerical cohesion value. You have to follow the input for the properties.
4. You have to use the exact amount of parameters described in the documentation for the FRIC otherwise the subroutine will interrupt and you must specify the amount of state variables.
5. The state variables must also be defined for the UMAT use.