Automatically generate a mesh at the midplane location, directly from the input geometry (components, elements, solids or surfaces), without first creating a midsurface.

The midmesh functionality in HyperMesh saves significant time over the traditional midsurface-based approach.

Figure 1. Midmesh Result Example

The resulting output consists of 2D shell elements created with the user-provided target size, as well as 1D elements defining the topology of the mesh (vertices/edges/faces). Midmesh generation is also multithreaded to take advantage of multi-core environments.

Direct Midmesh Supported Parts

Direct midmesh is supported for a large majority of parts including cast, machined, injection molded and extruded as shown in Figure 2.

Figure 2. Direct Midmesh Supported Parts

Midmesh Generation Workflow

There are several steps involved in generating a good quality midmesh. Following the workflow shown in Figure 3 helps guarantee the best result with minimal manual effort.
Base Extraction
Extract the base midmesh.
Cleanup Resulting Topology
Use the semi-automated midmesh editing tools to correct the 1D topology and fix any bad/missing faces. The goal is to prepare the model for final remeshing.
Rebuild Mesh
Remesh to the final flow and quality using the rebuild mesh functionality, and correct any remaining mesh quality issues.
Apply Thickness
Map the thickness from the original solid to the midmesh via the Map Thickness tool.

Figure 3. Midmesh Workflow