Authors: Rajesh Bhaskaran and Vincent Prantil
Problem Specification
1. Pre-Analysis & Start-Up
2. Geometry
3. Mesh
4. Physics Setup
5. Numerical Solution
6. Numerical Results
7. Verification & Validation
Exercises
Comments
Mesh
The following video shows how to create a regular mesh for the rectangle using "Mapped face meshing".
Summary of steps in the above video:
- In Workbench, double-click on Model cell A4.
- Highlight Mesh in the Project Tree. Click Update.
- Right click on Mesh > Insert > Mapped Face Meshing.
- Using the Face Selection Tool, click on the rectangular geometry. Click Geometry > Apply.
- Click Update.
- Highlight Mesh in the Project Tree. Right click on Mesh > Insert > Sizing.
- Using the Face Selection Tool, click on the rectangular geometry. Click Geometry > Apply.
- Next to Element Size, type the following to insert an expression: = 8/3
- Hit Enter.
- Save Project.
For this example, we would like to use "Q4" elements i.e. quadrilateral elements with 4 nodes for every element, one at each corner. It turns out that the quadrilateral elements in the mesh obtained above have mid-side nodes in addition to the corner nodes. So these elements are "Q8" elements with a total of 8 nodes for each element. In the video below, we drop mid-side nodes to get "Q4" elements (in the ANSYS element library, these are referred to as PLANE 182). Note that the mid-side nodes provide higher accuracy, so in the real world, you would not drop mid-side nodes unless you had a compelling reason to do so. Here we do it for learning purposes.