Page 64 - ansys

w Regardless of whether Use Advanced Size Function is on or off:
o Choosing the Hard option for edges means that the size or number of divisions is fixed on the
edge and cannot be changed by the meshing algorithm and the likelihood of a mesh failure
increases.
o Choosing the Soft option for edges, faces, and bodies means that the size control will be
affected by proximity, curvature, and local remeshing during the meshing process.

w If Use Advanced Size Function is off:
o Choosing Hard on a face/body means that curvature pre-refinement is not performed on the
edges of the face/body, but the edge can be split by the mesher.
w Remember these notes when using the Behavior option:

o If Use Advanced Size Function is on and a Soft size is specified on an entity, the specified
Growth Rate is used.
w If Use Advanced Size Function is on and a Hard size is specified on an entity, the Growth Rate is not
respected; the mesher will try to maintain a uniform size on the entity. If two entities with Hard sizes
of different values are adjacent to one another, no growth occurs and there will be an abrupt s i z e
change between them. However, growth will occur on all entities without hard size
constraints that are adjacent to a hard size entity, even if the Hard size applied is smaller than Min
Size/Proximity Min Size.

Sizing on Edge
Bias Type and Bias Factor
Specify the grading scheme and factor
Bias Type: grading of elements towards one end, both ends, or the center
Bias Option:
Bias Factor: is the ratio of the largest element to the smallest element

Smooth Transition: defined by Growth Rate which is ratio of size of an element with size of
previous element. (Growth Rate = Bias Factor (1(n-1))

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