I am trying to calculate the T stress from the ANSYS APDL 17.2 using CINT Command for a 2D plate under plane stress condition. The Code I am using is given below:

CINT,NEW,1

CINT,TYPE,TSTRESS

CINT,CTNC,CRACKFRONT

CINT,SYMM,ON

CINT,NORM,51,2

CINT,NCON,6

CINT,LIST

But the values of T-stress are highly dependent on the size of mesh near the crack tip. As the mesh is refined the Tstress are diverging while SIFs are converged.

Size of element KI KII T stress

0.025mm 15.3283 -0.0015 -19.634

0.1mm 15.3311 0.0005 -10.532

0.25mm 15.3311 0.0002 -14.330

0.5mm 15.3318 2.36E-05 -5.466

Can anyone explain how to calculate accurate T-stress values from ANSYS APDL using CINT command. And what is the correct size of element one should use to calculate the T -stress.

The mesh pattern near the crack tip is give in the attached jpg file.