Create and Refine a 1-D Linear Lagrange Element Mesh
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Contents
Description
- These step-by-step instructions will guide you through creating, refining and rendering a mesh of one-dimensional linear Lagrange elements.
- The nodal coordinates and element connectivities are read from simple Excel spreadsheets.
Start Continuity
- Launch the Continuity Client
On the About Continuity startup screen
leave the mesh checkbox checked under Use Modules:
Click OK to bring up the main window
Create mesh
Select rectangular cartesian in the Global Coordinates: pop-up menu
Click OK to submit Coordinate Form
Choose Lagrange Basis Function→1D→Linear
Click Add Linear
- Verify that the list of basis functions now contains:
- Linear Lagrange 3
Click OK to submit Basis Form
Click Import/Export/Graph button to open Continuity Table Manager
Continuity Table Manager→File→Open...
Select tab-delimited nodes file (nodes.xls)
- You should now have nodes numbered 1-4
Click OK to submit Node Form
Click Import/Export/Graph button to open Continuity Table Manager
Continuity Table Manager→File→Open...
Select tab-delimited elements file (elems.xls)
- You should now have elements numbered 1-3
Click OK to submit Element Form
Render mesh
Click Render to display nodes
Click the lines radio button
Click Render to display mesh lines
- The mesh should now look similar to the first screenshot above
Refine mesh and render again
Under New Element per old element in, select 4 in xi1, 1 in xi2, and 1 in xi3
Click OK
- You should now have nodes numbered 1-13
- You should now have elements numbered 1-12
If the Dimensions Form appears, simply click Apply Marked Recommendations and then OK
Click OK to submit
Click Render to display nodes
- Notice the new nodes in between the old ones.
Click the lines radio button
Click Render
- The mesh should now look similar to the second screenshot.
Pre-built model
This cont6 file contains all data and parameters for this problem: mesh.cont6. Just load, send, calculate, and render.