Function
- Display inertia forces and accelerations from response spectrum analysis at each node of a structure.
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] > [R.S] group > [Nodal Results]
Input
Nodal Results of RS dialog box
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
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
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
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
Deformation Scale Factor : Magnify or reduce the size of the displacement graphically displayed in the model window.
Beam Deformation : 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 non-linear 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 internal force influence surface in numerical values. The font and color of the numbers can be controlled in Display Option.
Decimal Points : Assign decimal points for the displayed numbers.
Exp. : Express as exponentials.
Min & Max : Display the maximum, 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 internal force influence surface values relative to the selected maximum or minimum value.
Set Orientation : Display orientation of numerical values.
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. Element numbers pertaining to the maximum and minimum forces are displayed.
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 forces/moments of plate elements.
Click then click Record button to the right of the Animation control board at the bottom of the working window.
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
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 animation window.
Bits per Pixel: Number of bits per pixel to create the default window for animation
: 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.
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..