Cyclic behaviour. Connectors

[julius83]

Hi All,

I am trying to model the cyclic behaviour of a
connector (loading, unloading, and different behaviour in tension and
compression) and I think that none of the capabilities of connectors in Abaqus enable to
do this.

I would be very grateful if you could point me in the right direction.
Perhaps, I should use a subroutine but I am not sure about this.

Thanks in advance.

Kind regards,
Julio

 

[akabarten]

Hi,

Please take a look into Abaqus documentation: 31.2.10 Connector uniaxial behavior.
Unfortunately *CONNECTOR UNIAXIAL BEHAVIOR keyword can be use only with Abaqus/Explicit.

Regards,
Bartosz

 

[julius83]

Thanks akabarten for your response.

The problem is more complicated because CONNECTOR UNIAXIAL BEHAVIOR does not take into account the permanent deformation when the connector changes from tension to compression and viceversa. I would need a connector which enables to model the whole cyclic behavior.

Thanks again.

Kind regards,
Julio

 

[IceBreakerSours]

I don't know if this will work but here are my 2 cents:

1) Use the "no compression" flag in the elastic material behavior.
2) Embed an element (or embed elements) inside the geometry and assign a different material property to it/them. See "model change, add" and "model change, remove" if you'd like to add/remove this/these embedded element(s).

http://www.eng-tips.com/faqs.cfm?fid=376