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Subject: [STRUC] Bolted joint contact representation
Author: KChodimella_at_Hendrickson-intl.com
Date: 2008-04-14 19:43:04

Dear All,

Just a general query about what contact do you specify between the nut and
flange? Is it fair to assume that if in reality there is enough pretension
and the joint is tight, we can use bonded contact?

I am modeling using shell elements. We are using bolts to connect two
plates. A small cylinder connects the two plates to represent a bolt. I
have a small circular surface representing the nut which is in contact
with the plate. A bonded contact gives me a non-conservative result (low
stress) and a standard contact between nut and flange gives me a
conservative answer (high stress) in the plate. There is no preload in my
model. Also, the failure location is next to the bolt. My intent is not to
design the bolt or the preload but to design the plates. But the type of
contact affects the stresses in the plate. Could anyone please share their
thoughts or experiences?

Thanks,
Kumar Chodimella
Engineering Analyst
Hendrickson Trailer Suspension Systems
2070 Industrial Pl S.E.
Canton, Ohio 44707
330-489-1952 (Phone)
330-489-1961 (Fax)
Posts possibly associated with message #92850AuthorDateScore
92850[STRUC] Bolted joint contact representationKChodimella_at_Hendrickson-intl.com2008/04/14 
92851Re: [STRUC] Bolted joint contact representationParis Altidis2008/04/14 
92852Re: [STRUC] Bolted joint contact representationChristopher Wright2008/04/14