Function
- Display inertia forces and accelerations from response spectrum analysis at each node of a structure.
Note
This function is activated when masses are entered as "Lumped Mass Type" which will be used for Eigenvalue analysis.
Call
From the Main Menu select [Results] tab > [Type : Analysis Result] > [Dynamic] group > [Nodal Results of RS]
Input
Load Cases/Combinations
Select a desired RS load case.
Output
Inertia Force : Inertia force at a node
Acceleration : Acceleration at a node
Mode : Inertial force and acceleration at a node for the selected Mode
Note
When this option is checked off, inertia force and acceleration calculated using the selected method from Modal Combination Control of Response Spectrum Load Case is displayed.
Components
When Inertia Force is selected
FX : Inertia force in GCS-X direction
FY : Inertia force in GCS-Y direction
FZ : Inertia force in GCS-Z direction
MX : Bending moment about GCS-X axis
MY : Bending moment about GCS-Y axis
MZ : Bending moment about GCS-Z axis
Mb : Warping moment about GCS-X axis
FXY : Combined inertia force about GCS-XY direction
FYZ : Combined inertia force about GCS-YZ direction
FXZ : Combined inertia force about GCS-XZ direction
FXYZ : Combined inertia force about GCS-XYZ direction
When Acceleration is selected
DX : Acceleration in GCS-X direction
DY : Acceleration in GCS-Y direction
DZ : Acceleration in GCS-Z direction
RX : Rotational acceleration about GCS-X axis
RY : Rotational acceleration about GCS-Y axis
RZ : Rotational acceleration about GCS-Z axis
RW : Warping acceleration about GCS-X axis
DXY : Combined acceleration about GCS-XY direction
DYZ : Combined acceleration about GCS-YZ direction
DXZ : Combined acceleration about GCS-XZ direction
DXYZ : Combined acceleration about GCS-XYZ direction
Type of Display
Define the type of display as follows:
Deform
Display the deformed shape of the model.
The ... Button
Deformation Scale Factor : Magnify or reduce the size of the displacement graphically displayed in the model window.
Deformation Type : Select the type of display for displacement
Nodal Deform : Display the deformed shape reflecting only the nodal displacements.
Real Deform : Display the detail deformed shape calculated along the sections between both ends of beam elements together with the nodal displacements.
Real Displacement (Auto-Scale off) : The true deformation of the structure is graphically represented without magnifying or reducing it. This option is typically used for geometric nonlinear analysis reflecting large displacement.
Relative Displacement : The deformation of the structure is graphically represented relative to the minimum nodal displacement, which is set to "0".
Undeformed
Overlap the undeformed and deformed shapes of the model.
Values
Display the nodal displacements in numerical values.
The font and color of the numbers can be controlled in Display Option.
The ... Button
Decimal Points : Assign decimal points for the displayed numbers
Exp. : Express as exponential
Min & Max : Display the maximum and minimum values
Abs Max : Display the absolute maximum value
Max : Display only the maximum value
Min : Display only the minimum value
Limit Scale(%) : Set the screen display limit for nodal displacements relative to the selected maximum or minimum value
Set Orientation : Display orientation of numerical values
Note
The default Decimal Points can be controlled in "Preferences".
Set Orientation = 0 horizontally displays the numerical values to the right of nodes or elements.
The orientation angle represents the counter-clockwise direction, which may be used to enhance the readability of the numbers.
Legend
Display various references related to analysis results to the right or left of the working window.
The ... Button
Legend Position : Position of the legend in the display window
Rank Value Type : Specify a type of values in the Legend and the number of decimal points.
Animate
Dynamically simulate the transition process.
Click The Apply Button then click Record to the right of the Animation control board at the bottom of the working window.
The ... Button
Animation Mode : Determine the type of animation for analysis results.
Animate Contour : Option to change the color of the contour representing the transition according to the magnitudes of variation
Repeat Half/Full Cycle : Select the repetition cycle for the dynamic representation of the transition
Note
Select 'Half Cycle' for the transient shapes of a structure and 'Full Cycle' for dynamically simulating vibration modes or buckling modes.
AVI Options : Enter the options required to produce the animation window.
Bits per Pixel : Number of bits per pixel to create the default window for animation
The Compressor... Button : Assign the method of compressing image data
Frames per Half Cycle (3~300) : Number of frames to simulate a 'Half Cycle'
Frames per Second (5~60) : Number of frames per second to present dynamic simulation
Construction Stage Option : Select the animation options when the construction stage analysis is performed.
Stage Animation : Animations by construction stages
Current Stage-Step : Animations by Steps in the current construction stage
From ~ To : Starting and ending construction stages or steps for animations
Mirrored
"Mirrored" allows the user to expand the analysis results obtained from a half or quarter model into the results for the full model by reflecting planes.
The ... Button
Half Model Mirroring
Quarter Model Mirroring
Mirror by : Specify the mirror plane (s) by designating a plane and a coordinate in the direction perpendicular to the plane in GCS.