Treatment For Geometry Noise In Mesh
Generation For Welded Tubular Y-joints In
The BFM
Author(s)
Chenjun Lu, Jianming Zhang & Lei Han
Abstract
Welding seams are often omitted in stress analyses of a welded frame structure
when using the finite element method. The boundary face method (BFM) makes
direct use of the CAD data of a structure to perform stress analysis, and therefore
has the potential to analyze a frame structure with all the welding seams taken
into account. Tubular Y-joints are typical sub-structures of a frame. The CAD
data of these Y-joints may contain geometric noises, which cause severe
difficulties for meshing. This paper describes a method to clear automatically the
possible geometric noises of a welded tubular Y-joint, so as to be easily meshed
during the stress analysis process when using the BFM. The method uses Bsplines
to remove geometric noises and to recover the topology, and allows
direct access to the consistent topology and accurate geometry of the welded
tubular Y-joint for 3D surface mesh generation. Several examples of automatic
meshing on complex frames are presented to validate the proposed method.
Keywords: uncracked tubular Y-joint, BFM, geometrical modeling, geometry
noise.
Keywords
uncracked tubular Y-joint, BFM, geometrical modeling, geometry
noise
Related Book
Other papers in this volume
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