Form: Shell Assignment - Hinges
A hinge assignment consists of a hinge property located at the mid-height of the wall object.
Assign nonlinear wall hinges to wall objects assigned wall section properties as follows:
Note: These wall hinge assignments may only be made to walls that utilize a concrete material with geometry that is vertical, planar, and rectangular in shape. Hinges may not be assigned to walls with a modeling type of layered.
Select the wall objects to which the assignment is to be made.
Select the Assign menu > Shell > Wall Hinge command to access the Shell Assignment - Hinges form.
If a single object is selected before implementing this command, the form displays the currently assigned hinges, if any.
If multiple elements were selected before implementing this command:
If all objects have the same hinge assignments, the form displays those assignments.
If the objects have no assignments or do not share a common hinge assignment, the form is essentially empty.
Add, modify, or delete a hinge assignment as follows:
Add a hinge assignment.
Select an Auto or user defined hinge property from the Hinge Property drop-down list.
Click the Add button.
Note: If the Auto option is selected from the Hinge Property drop-down list, the Auto Hinge Assignment Data form will display when the button is clicked. Use that form to specify the Auto Hinge Type based on tables in ASCE 41-13. Also, when an Auto hinge type definition is highlighted in the Hinge Property drop-down list on the Shell Assignment - Hinges form, the Auto Hinge Assignment Data area will display key parameters of the hinge definition. In addition, the button will become available. Clicking that button will display the Auto Hinge Assignment Data form.
Modify an existing hinge assignment. Modify the hinge assignments as follows:
Select the hinge in the Shell Hinge Assignment Data list box.
Select an Auto or user defined hinge property from the Hinge Property drop-down list.
Click the Modify button.
Delete an existing hinge assignment.
Highlight the previously assigned hinge property in the Shell Hinge Assignment Data list box.
Click the Delete button.
Click the Apply button to complete the assignment.
When the button is used, the Shell Assignments - Hinges form will remain open until it is closed by clicking the button. This allows selection of another wall object(s), to which different assignments can be made.
If only one assignment is being made to only one set of selected objects, the button can be used to both apply the assignment and close the form'
Multiple nonlinear hinges can be assigned to the same wall object, e.g., Shear V2 and Interacting P-M3. However, this may make it difficult to interpret some of the results.
See Also
Load Case Data - Nonlinear Modal History (FNA)