This test problem evaluates hinge response when the yield point on the interaction surface changes. Since the yield point is defined by coordinates which couple axial and bending behaviors, post-yield changes in loading conditions will also cause the yield point to change.
For evaluation, a concentrated hinge is assigned to the fixed end of a cantilever beam. A moment and axial-compressive force are applied to the free end. Hinge response is then reviewed for a series of several load sequences which are assigned to a time-history load case.
The attached PDF file presents analysis details and results. Also attached is the SAP2000 model used to conduct analysis.
Report
Attachments
SAP2000 V14.2.4 model (zipped SDB file)
Metadata
Name: Hinge response when yield point changes
Description: Behavior of a concentrated plastic hinge when the loading applied to a nonlinear frame object causes the yield point of the interaction surface to change position.
Program: SAP2000
Program Version: 14.2.0
Model ID: na