Mesh generation using Q4 elements for a rectangular domain

This code generates a structured 2D mesh using Q4 elements for a rectangular domain of any length and width, as per user requirement.

*****This code is developed by Sandipan Baruah, PhD student, India.*****

This code is used for 2D mesh generation using 4-noded quadrilateral elements, used for Finite Element Analysis (FEA) in MATLAB.

The code asks the user for the following inputs:

1) Length of the rectangular domain.

2) Width of the rectangular domain.

3) No. of elements desired by the user along the length.

4) No. of elements desired by the user along the width.

5) Whether the user wants to display or hide the node numbers in the mesh.

6) Whether the user wants to display or hide the element numbers in the mesh.

Using the above user-input data, this code generates a structured 2D mesh using Q4 elements.

The outputs are:

1) Plot of the mesh.

2) Global connectivity matrix between elements and nodes.

3) Global coordinates of the nodes

4) Numbers of nodes and elements in the mesh.