Hello, I am writting to ask how to get the elastic modulus or undrained strength of the soil in the simulation model by using hypoplastic model in clay? Is there any formula that can be calculated from the hypoplastic model parameters, or is there some other way?Thank you so much.
A question about the hypoplastic model in clay
Related Articles
-
PhD course “Hypoplasticity for Practical Applications”
Hashmi Sohawon||Constitutive Modelling|2 |
Views 2,724
Are the slides in regards to Stiffness Anisotropy for Clay Hypoplasticity for the PhD course available online? The available document {Mašín, D. (2015) Part 4: Determination of material parameters, PhD […] -
Question about Interface between UMAT and VUMAT
Sina Niazi||Constitutive Modelling|1 |
Views 2,644
Hello, I read the research report and the FORTRAN code available at https://soilmodels.com/download/vumat_umatinterface-zip/. It sounds quite interesting but I have a couple of questions about the FORTRAN code: 1- Did […] -
Cyclic Triaxial Test
Mehdi Joneidi||Constitutive Modelling|2 |
Views 2,683
Dear All, I am using ISA+HP model in my research and I have encountered some problem when looking into cyclic triaxial test for single element. The target model was selected […] -
-
Triaxial Callibration test with Hypoplasticity
pooyan ghasemi||Constitutive Modelling|3 |
Views 2,380
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 […] -
New features in Excalibre
David Mašín||Constitutive Modelling|0 |
Views 3,120
Hi all, We are happy to announce that the Excalibre team received support from the research grant GACR 22-12178S to further develop the calibration software, which is freely available at […] -
UMAT Code for Clay Hypoplasticity
Shen Wang||Constitutive Modelling|4 |
Views 2,700
Hello Everyone, I am using the UMAT code for clay hypoplasticity provided by Prof. Masin — https://soilmodels.com/download/plaxis-umat-hypoplas-zip/ I made a oedometeric test model in Abaqus2018 and applied the umat code […] -
PM4Sand and PM4Silt models available
Katerina Ziotopoulou||Constitutive Modelling|3 |
Views 2,818
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 […]
Who is Online
No one is online right now
Search SoilModels Website
Recent posts
-
Zbraslav sand – Cyclic tests by Charles University 17.1.2023
-
New features in Excalibre 17.1.2023
-
Sanisand 13.1.2023
-
SaniSand Model in Plaxis 3D 9.12.2022
-
The GA-cal software for the automatic calibration of soil constitutive laws 2.12.2022
-
Abaqus OneAPI Compiler 10.11.2022
-
Few more Question on calculating lateral displacement of pile using hypoplastic clay model 3.10.2022
-
A question about the hypoplastic model in clay 22.9.2022
-
A High-Cycle Accumulation Model for Sand (Niemunis et al., 2005) 6.9.2022
-
Malaysian kaolin – Cyclic tests by Charles University 5.9.2022
-
Problem in calculating Lateral displacement of the pile using Hypoplastic clay model 2.9.2022
-
GTS NX 25.7.2022
Recent Comments
- Shruthija Sreeram on UMAT Implementation in Abaqus (Hypoplastic clay Subroutines)
- Paul Le Roux on Zbraslav sand – Cyclic tests by Charles University
- Amrane Moussa on Download package of a complete dataset “Zbraslav sand – Cyclic tests by Charles University”
- Francisco Mendez on The GA-cal software for the automatic calibration of soil constitutive laws
- Abolfazl Najafi on The GA-cal software for the automatic calibration of soil constitutive laws
- Arie Koot on SaniSand Model in Plaxis 3D
- Sajjad Shakeri on UDSM PLAXIS
- Anis Kheffache on Abaqus OneAPI Compiler
- Kassem Dib on How can I solve the error in Abaqus mentioned below?
- Dimitrios Konstantinidis on Issues in getting the negative values of q (mean deviatoric stress) while simulating cyclic triaxial test in ABAQUS using SANISAND subroutine.
- Tomáš Kadlíček on Download Package of Charles University Implementation of High Cycle Accumulation Model
- Safia EDAOUDI on Simulating Oedometer test in PLAXIS
- Safia EDAOUDI on Simulating the oedometric test with Abaqus
- MOHD SAQIB on Issues in getting the negative values of q (mean deviatoric stress) while simulating cyclic triaxial test in ABAQUS using SANISAND subroutine.
- Dimitrios Konstantinidis on Issues in getting the negative values of q (mean deviatoric stress) while simulating cyclic triaxial test in ABAQUS using SANISAND subroutine.
- Guilherme Castro on Download Package of Charles University Implementation of High Cycle Accumulation Model
- Giada Orlando on Download Package for Hypoplastic interface model and UMAT – FRIC interface
- Paul Le Roux on PM4Sand and PM4Silt models available
Undrained shear strength is calculated using Hypoplastic model by the combination of state dependent variables SDV7, SDV9, SDV15 i.e. Void ration , Effective stress and OCR using equation…using equation
Su=o.18(σ’v)OCR^0.9….. Further the relation between these state dependent variables can be found in the the chapter 6 of the book of Dr. David masin”Modelling of of soil behavior with hypoplastcity’
e=expN−λ∗ln(OCR∗p) −1
Good luck and thank you
Hello Dr. Muhammad Ahmad
Thank you so much for your answer. It is really helpful for me. Could you please tell me where I can find the full meaning of the state dependent variables from SDV1 to SVD 16? I am very appreciate for your help.
Here is the link… Thank you
http://web.natur.cuni.cz/uhigug/masin/plaxumat/node6.html
Many thanks to you !
Hi Muhammad, thanks for replying. And Wenbo: For clarification, the formula for undrained shear strengh (Eq. 6.22 from the book Masin, 2019) is cu=p*M*OCR/4, where M=6*sin phic/(3-sin phic) and OCR=pe/p with pe=exp((N-ln(1+e))/lambda). Elastic modulus is only defined for small strain stiffness version of the model (the one with intergranular strain), where the shear modulus G0=Ag(p/pr)^ng with pr=1 kPa.
Thank you for your clarification Prof. Mašín !