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[ehsan benabbas <question687871@xxxxxxxxxxxxxxxxxxxxx>]

Question #687871 on Yade changed:
https://answers.launchpad.net/yade/+question/687871

    Status: Answered => Open

ehsan benabbas is still having a problem:
I am using the "reaching porosity" part but it seems like never would be
converged.

my target porosity is 0.4 with frictional angle 30.

It still running but the output is like the following for 1000
iterations

ehsan@ehsan:~/Desktop$ /home/ehsan/yade/install/bin/yade-2019-08-08.git-775ae74  Q.py
Welcome to Yade 2019-08-08.git-775ae74 
Using python version: 3.6.9 (default, Nov  7 2019, 10:44:02) 
[GCC 8.3.0]
TCP python prompt on localhost:9000, auth cookie `cusdye'
XMLRPC info provider on http://localhost:21000
Running script Q.py
************** START **************
============ DEFINING VARIABLES ============
============ DEFINING FUNCTIONS ============
============ DEFINING MATERIALS ============
============ DEFINING PACKING ============
============ DEFINING TRIAXIAL TEST ============
============ DEFINING ENGINES ============
The constructor with a shareWidget is deprecated, use the regular contructor instead.
Number of elements:  20006
Box Volume:  6.92593712388204e-310
Box Volume calculated:  8000.0
============ APPLYING CONFINING PRESSURE ============
~~~~~~~~~~~~~ Phase_01: Converging to Isotropic Compression, 50kPa ~~~~~~~~~~~~~
unbalanced force: 0.0007999999999999998  mean stress engine:  -0.0012625089975651174  mean stress (Calculated):  -0.0
porosity= 0.8740795009613841
void ratio= 6.941518717245006
################## Isotropic phase is finished and saved successfully ##################
============ REACHING TARGET POROSITY ============
 Friction:  28.5  porosity: 0.8740795009613841
 Friction:  27.075  porosity: 0.8621664930170699
 Friction:  25.721249999999998  porosity: 0.8476063035032143
.
.
.
 Friction:  0.01957026971200895  porosity: 0.482076166440355
 Friction:  0.0185917562264085  porosity: 0.4777297594206758


So the frictional angle is going to be 0. Actually I am still wondering how to define a packing with 30 degree for frictional angle, "20mm*20mm*20mm" dimensions, initial porosity of 0.4, 2e4 number of particles, minimum radius=0.1, and maximum radius=0.3 because this is the sample I want to study.

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