BGA example home page Next BGA page Previous BGA page

Ball Grid Array Example bga-2 for the Surface Evolver

[Click for the bga-2.fe datafile in a second window.]

This is a slight modification of bga-1.fe to reduce the computational requirements. Since the top and bottom faces are fixed, there really is no need to refine their interiors. Thus the attribute "no_refine" has been added to faces 7 and 8 in the datafile. The initial refinement from hexagon to triangles still gets done, and the rim edges still get refined since they don't have the "no_refine" attribute. Note that "no_refine" only applies to the "r" command; it has no effect on explicit "refine" commands. At high refinement, this use of "no_refine" can save about 1/3 of memory and compute time, besides speeding up the graphics display.

without no_refine with no_refine
bga-1 bga-2

Ball grid array example home page Next BGA page Previous BGA page
Surface Evolver home page
More Surface Evolver examples
Ken Brakke's home page
This page last modified June 2, 2013
Susquehanna University assumes no responsibility for the content of this personal website. Please read the disclaimer.