The master/slave option is provided to enable the user to model rigid links in the structural system. This facility can be used to model special structural elements like a rigid floor diaphragm. Several slave joints may be provided which will be assigned same displacements as the master joint. The user is also allowed the flexibility to choose the specific degrees of freedom for which the displacement constraints will be imposed on the slaved joints. If all degrees of freedom (Fx, Fy, Fz, Mx, My and Mz) are provided as constraints, the joints will be assumed to be rigidly connected.
The master/slave option provided in STAAD allows the user to model specialized linkages (displacement tying, rigid links) in the system. For example, SLAVE FY … connects the two joints such that the Y displacement at the slave will be the sum of Y displacement at the master plus the rigid rotation.
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