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[xjin <question622071@xxxxxxxxxxxxxxxxxxxxx>]

Question #622071 on Yade changed:
https://answers.launchpad.net/yade/+question/622071

    Status: Solved => Open

xjin is still having a problem:
Thanks Jan Stránský, the original problem have already been solved. 
Another confusion makes me want to ask you for help. 

As the explanation mentioned  before, stress = (s_x, t_xy, t_xz, t_yx, s_y, t_yz, t_zx, t_zy, s_z). 
And the example I obtain: 
------------------------------------------------------------------------------------------------------------------------------------------------------------
Yade [19]:obtain stress
     -> [19]: Matrix3(-0.13752527190640026,0.03607936010975411,0.0008634995770584191, 0.03445913198778846,-0.06373525199754092,0.006348443944983994, -0.0012487034856438542,0.014427579541476804,-0.11692017375785213)

------------------------------------------------------------------------------------------------------------------------------------------------------------
Therefore,
-------------------------------------------------------------------------------------------------------------------------------------------------------------
  s_x=-0.13752527190640026
t_xy=0.03607936010975411
t_xz=0.0008634995770584191
t_yx=0.03445913198778846
  s_y=-0.06373525199754092
t_yz=0.006348443944983994
t_zx=-0.0012487034856438542
t_zy=0.014427579541476804
  s_z=-0.11692017375785213
-------------------------------------------------------------------------------------------------------------------------------------------------------------
for the values, I find t_xy does not equal to t_yx,t_xz does not equal to t_zx and t_yz does not equal to t_zy.
As the knowledge of Elasticity shows, the t_xy=t_yx and so on.
Is the reason that the stress calculation is approximate calculation?
Thank you!

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