So, i am doing a 2 stories RC building 3D model (only with frames) to try to get the capacity curve of a building which is impacted by a tsunami wave (this to get the vulnerability curve). But i have some problems/issues because i am modeling within the structure the non structural elements (masonry) due to some researchers have included them as resistent systems within the main system (moment resisting frame). In general i am using element nonlinearBeamColumn with fibers sections for modeling beams and columns and element zeroLength to model walls (masonry) as a diagonal truss element in the structure (i tryied with element truss and element corotTruss, but the axial results, stress - strain, are not what i expected, I did a model with SAP2000 to clarified the results). So i keep using element zeroLength to model them inspite of OPENSEES always puts some warnings about the lenght of zerolenght objects, because they are longer than 4m (i want to know if those warnings affect the results and what is the solution to model these masonry walls?)
in addition, i have to model a element to identify the shear failure on columns (i know the solution is to using a zerolengh object to conect the colums)... but i dont know if i can define only 1 dof (2 in 3d models because of both shear stress) with this element and the others just define as fixed dof (i mean like a link MultiLinear Plastic element in SAP2000). In other hand how could i define a element (like a element zerolengh with 1 section) just working on 1 dof with a section and the others just let them free?
Thanks for the awsome help you could give! :3 And hoping you could understand me
