Summary
This function is the same as MIDAS CIVIL Sectional Property Calculator, and it calculates a customized section from the CAD ID with the sectional property information required for analysis.
It supports exporting to a .sec file, which can be imported into MIDAS CIVIL through the CIVIL Sectional Property Calculator process.
How to Run
[CAD View Mode]
Ribbon Menu > [Tool] Tab > SPC [SPC]
Explanation
How to use SPC function.
Run the SPC [SPC] command or execute the SPC function of the Tool menu tab.
[Created SPC Section]
SPC Section List : Indicates the cross section list for calculating cross section properties.
Preview : Shows a preview of the calculated cross section.
Add : Opens a window for calculating section properties.
(Before opening the window, the ‘Break object for calculating section properties’ operation is performed.)
Modify : Modifies the results of section property calculations.
Delete : Delete the cross section whose properties were calculated from the list.
[Run]
[Command]
1. Use Sectional Property Calc. (SPC) fuction
2. Click the ‘Add’ and ‘Modify’ buttons
Intersecting objects must be cut off to calculate section properties.
[Select all objects to breake / Do not break(N)] :
Calculate Section Properties
To calculate section properties, all intersections of objects must be disconnected.
Therefore, when entering the 'Calculate section properties' panel, an action to disconnect the object
will be required.
(Like CAD “Explode” effect)
3. When selecting an object, the object is disconnected and the ‘Calculate sectional properties’ window
will automatically open.
If the object is already broken, select ‘Do not break(N)’ and the ‘Calculate section properties’ window
will automatically open.
[Create a Calculate Section Properties panel]
[Specify the section name and type]
Section Name : Enter the name of the section.
Section Type :
There are three section types (Plane, Line, Composite), and how to define the cross-section according to type is explained below.
[SPC section definition of Plane section type]
Select External Object :
Select the external closure object.
Only the outermost closed section of the selected total object is recognized.
Select Internal Object :
Select the internal closed object.
If there are multiple internal objects, select one closed section in turn.
Mesh Density :
Select Mesh Density.
[SPC section definition of Line section type]
Define Thickness : Select the line object and enter the thickness.
The entered thickness is temporarily applied to the line object and disappears when the ‘Calculate section properties’ window is closed. The preview retains the thickness applied.
Define Close Section : Select the closed object. If there are multiple objects, select one closed section in turn.
Specify Curve Precision :
Curve precision refers to the degree of division when Spline and Ellipse must be divided into Line for calculation.
Create with Steel Design Type :
When Checked On, the ‘Design Group Setting’ tab is activated and you can define Top, Bottom, Right Web, and Left Web information.
When selecting a Top, Bottom, Right Web, or Left Web object, you can select a stiffener, and objects with a stiffener selected are created with a stiffener label.
[SPC section definition of Composite section type]
Composite Type is created using the created Plane Type and Line Type.
Setting Material :
When you click, the ‘Setting Material’ window is activated, and you can define the name of the material, modulus of elastic, Poisson’s ratio, etc.
The Base option specifies the Base Material that will be the basis for substitution.
(For composite sections, the materials must be replaced by one to calculate the section properties of the entire cross section.)
Base Material : The Base Material specified in the Setting Material window appears.
Number of Parts : Select the number of parts.
[Calculate CIVIL Section Properties]
CIVIL section properties calculation and table setting.
Calculate CIVIL Section Properties : Calculate section properties.
Note
Section property calculations are not calculated according to the length units below.
It is calculated by recognizing only the numbers drawn on the drawing, and when the unit is changed, the calculated result is simply converted to units.
If you draw a drawing in 'mm' units and then calculate it in 'm' units, the result will be incorrect..
Force Unit : This is an option that specifies the force unit of the table, such as KN, kgf, tonf
Length Unit : This is an option that specifies the length unit of the table, such as mm, inch, or ft.
Precision : This is an option to specify the number of decimal places to express.
Layer : Option to specify the Layer for the table.
Font : Option to specify the font for the table.
[Option]
Specify additional options.
Result Location :
This is an option to select where the section results are output.
Object Hatch :
This is an option to select whether or not the object will be hatched.
Create Section Result :
This is an option to select the section result output method.
Mesh Density Preview Window :
When you click the 'Calculate CIVIL Section Properties' button, you can see the mesh preview window after calculation.
Fig. Mesh Density Preview Window
[Preview]
You can check the section preview and calculated section properties..
Preview : Show a section preview.
Sectional Property
Asy : Effective Shear Area resisting shear force in the element's local y-direction
Asz : Effective Shear Area resisting shear force in the element's local z-direction
Ixx : Torsional Resistance about the element's local x-axis
Iyy : Moment of Inertia about the element's local y-axis
Izz : Moment of Inertia about the element's local z-axis
Cyp : Distance from the section's neutral axis to the extreme fiber of the element in the local (+)y-direction
Cym : Distance from the section's neutral axis to the extreme fiber of the element in the local (-)y-direction
Czp : Distance from the section's neutral axis to the extreme fiber of the element in the local (+)z-direction
Czm : Distance from the section's neutral axis to the extreme fiber of the element in the local (-)z-direction
Peri : O : Total exterior perimeter length of a section
Peri : I : Inside perimeter length of a hollow section
y1, z1 : Distance from the section's neutral axis to the Location 1 (used for computing combined stress)
y2, z2 : Distance from the section's neutral axis to the Location 2 (used for computing combined stress)
y3, z3 : Distance from the section's neutral axis to the Location 3 (used for computing combined stress)
y4, z4 : Distance from the section's neutral axis to the Location 4 (used for computing combined stress)
[Result]
Sec Export : Export the .Sec file so it can be imported into Civil.
Create Section Properties : The contents of the preview are output as data in a format that can be checked in the CAD ID.
[Import files from Civil]
Load cross-section information.