How to obtain COORDS of all boundary nodes?

[gongyilun]

I would like to calculate the shortest distance from each inner nodes to the boundary, how could I get the COORDS of all boundary nodes? Or are there any other ways? Thanks!

 

[Dave442]

Hi gongyilun,

To get the coordinates of the boundary nodes create a node set containing the boundary nodes and export the x,y,z coordinates (COORD) using Report -> Field output.

To get the shortest distance from each node to the boundary, export the x,y,z coordinates (COORD) for your inner and outer node sets and take the values into matlab or scilab or whatever. For each inner node then calculate the distance to every outer node. The smallest value is the minimum distance from that node to the boundary. Repeat this for every inner node. Sounds like it would take ages but its generally quite quick, even for fine meshes.

Good luck,
Dave