[Gmsh] Duplicate Surfaces Issue from .Step import

Aaron Kiefer AKiefer at accident-research.com
Mon Feb 8 12:30:38 CET 2016

GMSH Group,

I'm still working with importing a .step surface file to create a 2D mesh for PC-Crash.  The model has been separating when I try to analyze it.  Inspection of the .geo file indicates redundant points, lines, and faces along common surfaces of the model.  For reference, I copied one set of offending surfaces, lines, and points from the .geo file and typed them below. Is there a way to tell GMSH to remove the duplicate points, lines, and surfaces before or during meshing?  From reading the help,  the sew faces command sounds like what I need.  I tried opening the .Step file using the below 'sew faces' box checked before saving as a .geo but that didn't change anything...
[cid:image001.png at 01D1623A.38F5C0B0]

Plane Surface(40) = {131,-133, -128, 132};
Plane Surface(48)  = {161, -162, -163, 159};
Line(161) ={111, 113};
Point(90) = {177.8000000000002, 15.87499999999997, 130.5089814427782, cl__1};
Point(113) = {177.8000000000004, 15.87499999999994, 130.5089814427785, cl__1};

Thanks in advance for any suggestions,

Aaron J. Kiefer MSME, PE
Accident Research Specialists, PLLC
1631 NW Maynard Road, Suite 101
Cary, NC 27513
Phone:  (919) 467-8134
Fax:        (919) 678-1261
Cell:        (919) 810-8429
Email:    akiefer at accident-research.com<mailto:akiefer at accident-research.com>
Web:      www.accident-research.com<http://www.accident-research.com/>
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