Requist for outputof maximum shear stress in Abauqs

[JIAGUO]

Hello,

I am currently doing my thesis about fracture of ice sheet by using Abaqus. Since I am new to Abaqus, I could not find the option to display the maximum shear stress and octalhedral stress.

Is there any pros that could let me know ~where can i find the option to display these two stress in Abaqus??

P.S I could only find the Principle Max, Principle Min etc in the field output dialog box.

Thanks a lot

Jia Guo