Page 16 - Moldex3d training Manual

a. Per the above equation, the Offset distance is proportional to both the offset ratio AND
the mesh size. If this is the case, then the thickness of the boundary layer will vary widely
across the part wherever the node seeding is different.
b. When melt crosses from the prism layer into the tetra layer, it is distorted, which can lead
to fluctuations and inaccuracies in the calculation.
2) Boundary Layer Thickness Limiting – Limits the thickness of the Boundary Layer so that there are
no overlapping elements between the boundary layers.
a. If the Offset ratio is set such that the boundary layer is greater than half of the thickness
of the part, overlapping mesh will prevent the mesher from providing a successful solid
mesh.
b. There must be at least one (1) tetra layer created to connect the two boundary layer
sections.
For a BLM type mesh, the thickness of the 11 layers through the solid section of the mesh are preferred
to be similar in thickness. This mean that the tetra layer should be limited as much as possible. Since
there is no possibility of overlapping solid mesh to occur, the maximum offset ratio of 3.0 may be used
to create even layer thickness.

2.2 Model Setup
2.2.1 Moldex3D Studio
Moldex3D Studio is a consolidation of the previous applications CADdoctor, Designer, and Project.
2.2.1.1 Creating a Project
To start with model setup, a project must first be created. To create a project, simply click the New button.

The default project name will be MDXProject%Date%, so it is recommended to change this name to avoid
confusion when trying to recall the project.
Project location will be defaulted to the LAST place a project was saved. It is recommended to save the
project on the local drive for best computational performance.

15