Nodal Results of Response Spectrum

 

 

 

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.

 

 

 

From the Main Menu select Results >Nodal Results of RS.

 

Select Results > Nodal Results of RS in the Menu tab of the Tree Menu.

 

 

 

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

 

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

 

Define the type of display as follows:

 

Deform

Display the deformed shape of the model.

 

 

 

Deformation Scale Factor

Magnify or reduce the size of the displacement graphically displayed in the model window.

 

Beam Deformation

Select the type of displacement display.

 

Nodal Deform: Display the deformed shape representing only the nodal displacements.

 

Real Deform: Display the detail deformed shape including the calculated displacements along the sections between the end nodes in addition to the nodal displacements for beam elements.

 

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 inertia forces and accelerations 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 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 inertia forces and accelerations 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.

 

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 transition process.

 

Click then click Record to the right of the Animation control board at the bottom of the working window.

 

 

Animation Mode: Select 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

: Assign the method of the 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.