Buckling Mode Shapes |
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Check the Buckling Mode Shapes and Critical Buckling Load Factors of a model. |
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From the Main Menu select Results > Mode Shape > Mode Shapes > Buckling Mode Shapes. |
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Assign the type of display as follows:
Md.Shp. |
Display the buckling mode shapes.
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Control the Scale Factor for buckling mode shapes. Mode Shape Scale Factor: Control the Scale Factor for buckling mode shapes. Cubic Interpolation: Display the elements by cubically interpolating the mode shapes (including rotation angle) of each node. Cubic Interpolation Factor: Factor to be applied for cubic interpolation. It affects the curvature of elements.
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Undeformed |
Display additionally the model shape in the buckling mode shapes.
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Values |
Display the component of a buckling mode in numerical values.
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Decimal Points: Assign decimal points for the displayed numbers Min & Max: Display the maximum and minimum values Note
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Legend |
Display various references related to analysis results to the right or left of the working window.
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Legend Position: Position of the legend in the display window
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Animate |
Dynamically simulate the buckling modes.
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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 Note 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 Construction Stage Option: Not supported in Buckling Mode Analysis |
Contour |
Display the buckling modes in contour.
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Ranges: Define the contour range.
Number of Colors: Assign the number of colors to be included in the contour (select among 6, 12, 18, 24 colors) Colors: Assign or control the colors of the contour. Color Table: Assign the type of Colors.
Reverse Contour: Check on to reverse the sequence of color variation in the contour. Contour Line: Assign the boundary line color of the contour Element Edge: Assign the color of element edges while displaying the contour Contour Options: Specify options for contour representation. Contour Fill Gradient Fill: Display color gradient (shading) in the contour. Draw Contour Line Only Mono line Contour Annotation Spacing Coarse Contour (faster) (for large plate or solid model) Extrude |
Revision of Civil 2014
Create a new model file in which the geometry of analysis model is updated based on the mode shape of linear buckling analysis. The new model can be used for geometric and material nonlinear analysis to find a buckling load.
Buckling Mode
The selected mode shape is used to update nodal coordinates of analysis model.
Scaling
The mode shape is scaled by the scale factor or by the maximum mode shape. The scaled mode shape is added to the nodal coordinates.
Scale Factor
Updated coordinate = (initial coordinate) + (mode shape) x (scale factor)
Maximum Value
Updated coordinate = (initial coordinate) + (mode shape) x (maximum value)/(maximum mode shape)
Note.
When 'Maximum Value' is selected, the values of mode shape are scaled with reference to the values of MdXYZ(V).
Example:
- Buckling mode shape of a node.
MdX(V)=1, MdY(V)=2, MdZ(V)=3, MdXYZ(V))=3.742
- Maximum Value = 5
- Scaling
MdX(V)=1x(5/3.742), MdY(V)=2x(5/3.742), MdZ(V)=3x(5/3.742), MdXYZ(V))=3.742x(5/3.742)