How to output contact gap when using VUINTER subroutine?

Hi there,

Regarding Output for VUINTER and VUINTERACTION, the Documentation 2020x said, 

User-defined, solution-dependent state variables associated with the user subroutine cannot be output to the output database (.odb) file or results (.fil) file.

And I did try to add SVD (after assigning the gap to statev in VUINTER)  or CDISP after *Contact Output keyword. They are either not defined, or ignored.

I also tried to assign the gap to spd in VUINTER and request SFDR through  *Contact Output keyword. However, SFDR is ignored when writting resutls into files.

I was wondering if there was any way to circumvent this unconvenience and output the distribution of contact gap.

Cheers,

Charle

Abaqus CAEcontactfield output VUINTER