Drucker Stability

[sportivo_cae]

Hi,

i want calibrate a hyperelastic rubber in abaqus, i have experimental data and i want use Mooney rivlin and Yeoh.
But, also, i want check Drucker Stability?

can i do it?????
is there a internal tool in abaqus or i must create a subroutine, and in this case how?

thanks a lot