Fibers and Fields exercise

Description

• An automated script that runs this tutorial is included in the Continuity installation: examples\mesh11\fieldsAndFibers.py. To run it, click File→Scripts→Read script→Python or session script

Setup and render mesh

• Launch the Continuity Client

• Mesh→Edit→Coordinates…

  • Select prolate spheriodal in the Global Coordinates: pop-up menu

  • Enter 3.75 next to the Focus Position field

  • Click OK to submit Coordinate Form

• Mesh→Edit→Basis…

  • Choose Hermite Basis Function→3D→Linear-Cubic-Cubic

  • Click Add Linear-Cubic-Cubic

  • Choose Lagrange Basis Function→3D→Linear-Linear-Linear

  • Click Add Linear-Linear-Linear

  • Verify that the list of basis functions now contains:
    • Linear-Cubic-Cubic Hermite 3*3*3
    • Linear-Cubic Hermite 3*3
    • Cubic-Cubic Hermite 3*3
    • Cubic-Linear Hermite 3*3
    • Linear-Linear-Linear Lagrange 3*3*3
    • Linear-Linear Lagrange 3*3

  • Click OK to submit Basis Form

• Mesh→Edit→Nodes…

  • Click Import/Export/Graph button to open Continuity Table Manager

    • Continuity Table Manager→File→Open…

      • Select tab-delimited nodes file ( nodes.xls )

      • Continuity Table Manager→File→Close and update form

  • You should now have nodes numbered 1-8 in the list

  • In the Node Form under Derivatives with respect to, select the Angle Changes radio button

  • Select Linear-Cubic-Cubic under Coordinate 1, Coordinate 2, and Coordinate 3

  • Click on the Fiber Angles tab

  • Select Linear-Linear-Linear under Fiber Angle, Transverse Angle, and Sheet Angle

  • Click on the Field Vector 1 tab

  • Select Linear-Linear-Linear under Field Variable 1

  • Click OK to submit Node Form

• Mesh→Edit→Elements…

  • Click Import/Export button to open Continuity Table Manager

    • Continuity Table Manager→File→Open…

      • Select tab-delimited elements file ( elems.xls )

      • Continuity Table Manager→File→Close and update form

  • You should now have 3 elements in the list

  • Click OK to submit Element Form

• Mesh→Render→Nodes…

• Mesh→Render→Elements…

  • Click the lines radio button

  • Click Render

  • The mesh should now look similar to the following screenshot

• View→Show Open Mesh…

  • Click on elements lines2 in the list on the left

  • Click on the Colors tab

  • Change the R,G,B color field to 1.0, 0.0, 0.0 to change the color to the brightest red and hit Enter

• Mesh→Edit→Material Coordinates…

  • Click on the OK Button

• File→Send

• Mesh→Render→Fibers…

  • For the Xi3 Locations field, enter 0.0,0.5,1.0

  • Click OK

• Mesh→Render→Fields…

  • Select 3 for At Xi

  • Enter 0.0 for the Location field

  • Click Render

  • The mesh shoud now look similar to the following screenshot

• Mesh→Render→Fields…

  • Select 3 for At Xi

  • Enter 1.0 for the Location field

  • Click Render

  • The mesh should look similar to the following screenshort. You can change the size of the fibers from View→Show Open Mesh→material axes→Properties tab→Scale, increase it to around 200, or as desired

Pre-built model

This cont6 file contains all data and parameters for this problem: mesh8.cont6

• Warning: Render Fields does not always work correctly with the DejaVu renderer on laptops. If this is the case, try using the OpenMesh renderer.