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how to suggest PNEWS in fric_coef subroutine ?

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Posts: 8
Topic starter
(@mehtabpathan)
Active Member
Joined: 8 years ago

Hi all,

My question is about suggesting a new time increment in a step in abaqus. My friction coef is varying with time. I am using fric_coef subroutine to impose this variation.

I would like to reduce the time increment when near an abrupt friction change. Now, I am considering small time increments during all the step although I need them only at very short periods of a step (earthquakes).

Looks like It is not possible to do it within fric_coef subroutine and that only in FRIC subroutine that PNEWDT appears. Is there any other way to solve this problem because I dont know how to

use FRIC just to change the friction coef ?

Thank you for any help.

1 Reply
Posts: 8
Topic starter
(@mehtabpathan)
Active Member
Joined: 8 years ago

I have not guet any suggestion and would like to clarify my question.
I want to consider smaller time increment before changing my friction coefficient . A cyclic change is done by using the fric_coef subroutine. My question is how to
force a PNEWDT change when approching the friction change. I have seen that we can not call a USDFLD subroutine in a fric_coef subroutine.
Please help.

Regards

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