×
INTELLIGENT WORK FORUMS
FOR ENGINEERING PROFESSIONALS

Log In

Come Join Us!

Are you an
Engineering professional?
Join Eng-Tips Forums!
  • Talk With Other Members
  • Be Notified Of Responses
    To Your Posts
  • Keyword Search
  • One-Click Access To Your
    Favorite Forums
  • Automated Signatures
    On Your Posts
  • Best Of All, It's Free!
  • Students Click Here

*Eng-Tips's functionality depends on members receiving e-mail. By joining you are opting in to receive e-mail.

Posting Guidelines

Promoting, selling, recruiting, coursework and thesis posting is forbidden.

Students Click Here

Jobs

DEFINITION OF CONTACT AS A BOUNDARY CONDITION

DEFINITION OF CONTACT AS A BOUNDARY CONDITION

DEFINITION OF CONTACT AS A BOUNDARY CONDITION

(OP)
Dear collages,

I would like to model something similar to a base plate, and I want to define the contact as a non-linear condition (springs: stiffness in traction =0, stiffness in compression = infinite). How could I model this in ABAQUS?

Thank you very much.

Regards,

Juan José

RE: DEFINITION OF CONTACT AS A BOUNDARY CONDITION

(OP)
Dear collages,

I have been working during the week-end on this topic. I think a very good option would be define an Interaction (as a foundations) in the hole surface, but after to do this I think that the stiffness coefficient is the same for tension and compresion (as I mentioned, my intention is to define a non-linear spring: 0 when the surfaces tend to separate and infinite in the other case). Could you give more information? Thank you very much.

Regards,

jJ

RE: DEFINITION OF CONTACT AS A BOUNDARY CONDITION

(OP)
Dear rstupplebeen,

Sorry, but I employed a nomenclature used typically in steel design. I send to you a link with the problem that I want to model (in the middle of the web there is a description about "Tension and copression only spring"):

http://www.csiberkeley.com/sap2000/analysis

I have used the linear foundation interaction from Abaqus, but it defines a rigidity for both compression and tension.

Thank you very much.

Regards,

Juan José

RE: DEFINITION OF CONTACT AS A BOUNDARY CONDITION

(OP)
Dear collages,

Please, some days ago I made this question, but I in this moment I'm trying how to define this stiffness. I have a question: it could be possible to define a non-linear stiffness (compresion=infinity, traction=0) in nodes of elements in one direction with the objective to define the contact.

Thank you very much for your attention,

Juan José

RE: DEFINITION OF CONTACT AS A BOUNDARY CONDITION

Maybe, simply model rigid plate and fix it at position where you want its?

Red Flag This Post

Please let us know here why this post is inappropriate. Reasons such as off-topic, duplicates, flames, illegal, vulgar, or students posting their homework.

Red Flag Submitted

Thank you for helping keep Eng-Tips Forums free from inappropriate posts.
The Eng-Tips staff will check this out and take appropriate action.

Reply To This Thread

Posting in the Eng-Tips forums is a member-only feature.

Click Here to join Eng-Tips and talk with other members!


Resources