GENERATING THE MESH FOR THE NEW DESIGN
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Generating the mesh for the optimized design is more complex. In this geometry
it is especially important to obtain a precise mesh on the surfaces around the
hole and on the surfaces of the teeth.
Initially, we will generate a simple mesh by default. Then we will generate a
mesh using Chordal Error to obtain a more accurate result.
Footnote: The Chordal Error is the distance between each element
generated by the meshing process and the real profile.
Generating a mesh for the new design by default
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Choose the option Mesh
Generate mesh
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A window appears in which to enter the maximum element size for the mesh to be
generated. Leave the default value provided by GiD unaltered and click OK
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Figure 45. A
detail of the mesh generated by default
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Generating a mesh using "Chordal Error"
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Choose Mesh
Unstructured
Sizes
by Chordal error .
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Provide the values shown in figure 46.
Figure 46. Chordal
error windows
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Choose Mesh
Generate mesh.
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A greatly improved approximation has been achieved in zones containing curves
and, more specifically, along the wheel profile and the profile of the hole
(see Figure 47).
Figure 47. A
detail of the mesh generated using Chordal Error
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