Zero length element for bearing

[semon]

Hi everyone,

I have used zero length element to represent rubber bearing on a bridge model. I recorded displacement of the two nodes that represent the bearing and the displacement of the nodes are almost same. Aren't there relative displacement supposed to be large? So that we know that the bearing breaks during an earthquake event.

If it is not then why?

Any suggestion please.

Thank you

[fmk]

either your model is wrong or the record is not big enough!

[semon]

However the relative displacement of the deck and top of the pier of the bridge is large enough. Are we supposed to use the nodes that represent bearings or that represent deck and top of the pier to see if the deck unseat the pier?