Analyze existing section curves

To do this exercise, open the file to_14_07.e3.

1  When you start the command, the program displays the Section analysis dialog box.
Choose Existent sections.
In order to best understand the results of this command, you should first align the Work Plane with the plane of the existing sections (the internal reference system).



Once you have done so, proceed with next step.
 
2  Indicate the analysis point.


 
3 The program displays the Volume dialog box:
Tolerance Enables you to determine the tolerance value to be used in subsequent calculations
Units Enables you to determine the unit of measurement for output
File name Enables you to determine the name of the file to which you want to save the analysis results. If you omit this value, the results are shown only on screen.
 
4 Click OK or press the Enter key.
 
5 The program displays the Existent sections dialog box. Choose the method you want to use to select the sections:

Select the standard sections

    Enables you to select the sections one by one, starting from the one nearest to the analysis point. For each section, select all the component curves, and then end selection.
    Once you have selected all the sections, end the selection of the sections.



Select Layer by Layer
    Enables you to select the sections by specifying the layers on which the component curves lie (each section must consist of curves lying on a single layer, different from that of the other sections).
    After defining the lowest layer and the highest layer, click OK or press the Enter key.
     
6 The program displays the Volume dialog box. Choose the type of interpolation to be used:

Cubic spline interpolation

    Select this option when the surface is very regular and the cutting planes are not "closely packed".
Linear interpolation
    Select this option when the surfaces are very irregular.
7 If you have specified a file to which the results are to be saved, the program asks whether you also want to view the results on screen.
 
8 If you answer Yes, you must choose which results you want to view.
The results saved to the file appear as shown below:
 

Section analysis

Total number of sections 10

Section analysis results 1

Distance from analysis point 0

Section area 766.812
Analysis point (Workplane)-53.075 -0.710526
Analysis point (WORLD)-6.26495 71.5695 0
Center of gravity (Workplane)-56.3059 -0.73937 0
Center of gravity (WORLD)-9.49586 71.5406
External perimeter 197.122
Island perimeter 0
Max. length along X axis 96.6318
Max. length along Y axis 12.0791
Static moment mx -22.1183
Static moment my -2477.5
Trans. in. mom. jxg 6504.83
Long. in. mom. jyg 367635
Mom. of inertia jxx 6505.47
Mom. of inertia jyy 375640
Rotation radius xrg 2.91269
Rotation radius yrg 22.133
Polar radius polrg 22.3239
Polar moment polmi 382145
Prod. of inertia 3856.76
Center of gravity iner. prod. 3785.3
Max. center of gravity mom. 367675
Min. center of gravity mom. 6465.16
Angle of max. mom. of iner. 90.6005

Analyzing existing sections

To do the exercise described in the previous example, open the file to_14_07.e3 and follow the step-by-step instructions.