To model nonlinear frame behavior, frame hinges must be used. The nonlinear material behavior is only used to develop the moment rotation or other response curves for the hinges.
...
Users must assign concentrated hinges to frame elements which may experience nonlinear behavior. Definition of nonlinear material behavior does not enable plastic behavior, though it is necessary for the generation of the interaction surface and moment-rotation curves which characterize the yield criteria of a nonlinear frame element.
Key steps to modeling hinges
Define hinge properties using
"the Define > Section Properties > Hinge Properties
"menu
command.
Assign
thehinges to
thenonlinear frame elements
inusing the
model by usingAssign > Frame > Hinges menu
command.
Create a nonlinear load case and run the analysis.
Use
"the Display > Show Hinge Results
"menu
commandto plot
the deformation of the hinges vs. the applied loads, such as plastic rotation of the hinge vs. momenthinge deformation against applied loading. Moment vs. plastic rotation is one such option.
See Also
- , chapter "
(Frame Hinge Properties
", page 131)
Verification Example 1-026
(Frame - Moment and Shear Hinges), available
from "through Help > Documentation > Analysis Verification > Frames > 1-026 Moment and Shear Hinges
".
- Ashraf
Habibullah,
Stephen Pyle:A., Pyle, S. (1998). Practical Three Dimensional Nonlinear Static Pushover Analysis
- this technical paper describes the use of hinges for pushover analysis; it is available from http://csiberkeley.com/support_technical_papers.html
...
, Computers and Structures, Inc., Berkeley, CA
Metadata
Name: Hinge first steps (SAP2000)
Description: Basic introduction to hinge application in SAP2000.
Program: SAP2000
Program Version: na
Model ID: na