Enter specified (forced) nodal displacements,
or modify or delete previously entered specified (forced) displacements.
Call
From the Main Menu select Load > Specified Displacements of Supports.
Select Static Loads > Specified Displacements of Supports
in the Menu tab
of
the
Tree Menu.
Entry
Load Case Name
Assign the load case name. Click to the right to enter additional load cases, and modify or
delete existing load cases.
Load Group Name
Select the desire Load Group that will include
the entered Specified Displacements of Supports data. Select "Defualt",
if a Group assignment is unnecessary. Click to the right
to add, modify or delete Load Groups.
Options
Add:
To enter new or additional specified displacements at selected nodes assigned
with constraints
Replace:
To replace previously entered specified displacements at selected nodes
assigned with constraints
Delete:
To delete previously entered specified displacements at selected nodes
assigned with constraints
Displacements (Local Direction)
Enter specified displacements with respect
to the GCS or nodal local coordinate system.
If the nodal local coordinate system has
already been defined for specific nodes the data for the nodes are entered
with respect to the NCS.
Dx:
GCS or nodal local x-direction component of the specified displacement
Dy:
GCS or nodal local y-direction component of the specified displacement
Dz:
GCS or nodal local z-direction component of the specified displacement
Rx:
Specified rotation component about GCS or NCS X-axis
Ry:
Specified rotation component about GCS or NCS Y-axis
Rz:
Specified rotation component about GCS or NCS Z-axis
Revision of Ver.7.4.1
Note
1
The specified displacements are considered as load cases in MIDAS/Gen.
Thus, the specified displacements can be combined with other load cases.
Note the following when generating load combinations in a model applied
with specified displacements.
If specified displacements are assigned to a node, the relevant degrees-of-freedom
of the node are automatically constrained.
The nodes assigned
with specified displacements behave like Support
even for other
load cases that do not contain specified
displacements.
In other words, the function serves to
define "Specified Displacements of Supports" in midas.
Note
2
When the specified displacements are entered
at the specific construction stage, the load case for the specified displacement
is assigned to CS : Dead load or CS :
Erection. But the specified displacement is applied based not on the CS
: Dead load or CS : Erection, but on the CS : Summation. For example,
if the nodal displacements in the preceding stage are shown in the table
below and the user enter +0.1 as the specified displacement, the specified
displacement of 0.5 will be applied in order to obtain the final displacement
(Dead + Creep + Shrinkage + Tendon) of 0.1.
Revision of Ver.7.4.1.jpg)
Load Case Name.jpg)
to the right to enter additional load cases, and modify or
delete existing load cases.