Tek-Tips is the largest IT community on the Internet today!

Members share and learn making Tek-Tips Forums the best source of peer-reviewed technical information on the Internet!

  • Congratulations TugboatEng on being selected by the Eng-Tips community for having the most helpful posts in the forums last week. Way to Go!

NX Nastran Bolt Preload

Status
Not open for further replies.

thecadguy

Automotive
Joined
Apr 12, 2012
Messages
44
Location
US
Hello,

I am performing a non linear sliding contact using a clevis pin and stud with an initial gap of .15mm. I am having a hard time converging with such a large gap. I can get the model to converge and run fine with a gap of .05mm or smaller. After countless trial and errors it appears that with the larger gap the clamping pressure from the bolt preload may be happening to fast. I have tried touse hte boltstp parameter and changed from 1 to 5 with no success. In fact, I can not even get this parameter to wokr with the model that does converge.

Doe sanyone have expereince with this parameter and am I missing something?

Thanks Ahead of Time!

 
Status
Not open for further replies.

Part and Inventory Search

Sponsor

Back
Top