Forum for OpenSees users to post questions, comments, etc. on the use of the OpenSees interpreter, OpenSees.exe
Moderators: silvia, selimgunay, Moderators
- Posts: 1
- Joined: Wed May 08, 2019 1:11 pm
- Location: IIT BOMBAY
When rigid diaphragm is assigned (by rigidDiaphragm command) at every floor level of a three dimensional building model using lumped plasticity formulation, the first mode shape appears to be in vertical direction. The assignment of rigid diaphragm also increases first natural time period of the building significantly. What are the causes of this kind of result?