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barkhordari wrote: > i have problem with Soil-structure model. > i want to model soil and structure in 2d but i do not know how soil node > and structure node contact together. > > any body can help in this case????!!!! > Interface elements Contact Elements in OpenSees Follow the steps as under: 1. ...

hi create dummy nodes at the bounary of your model. dummy nodes are the nodes having same coordinates as those of boundary nodes of your model. but these are additional nodes you have generated for sake of defining zero length elements.now define zerolength element between boundary node and dummy no...