Challenge

SHELL MESH ON HOOD BY HYPERMESH

AIM:-To perform shell meshing on automobile hood model

PROCEDURE:-

Import the model by going to import and select import cad and select the format of the file and click import

Then we need to give the parameters to the component for meshing
To give the parameters we need to go to preferences and select criteria file setting and give the conditions of mesh-like target size

The component is solid so we need to go to the delete and select solid and select delete entities
Then we need to measure the thickness of the component by using dimensioning in geometry

Then after we need to extract the mid surface
To extract the mid surface we need to go to geometry and select the mid surface in the column of surface
We need to change the options of auto mid surface we need to goto extract option and we need to set the option as skin offset

we need to select auto extraction and select the option as auto extraction and select the surface and select extract and it will create a component
While extracting the different component keep them as current with respect to the parts

After extracting the mid surface we need to goto geometry clean up and clean the geometry
For geometry cleanup, we need to go to geometry and select quick edit

To split the surface we use split with node and split with line
To reduce the concentration at the hole we need to select the washer
To unsplit surface, we need to use unsplit surface
To paste or to trim we use toggle edges
The raw geometry has the missing surface to fill the surface we need to use the filler surface
To delete surface we use delete surf
To replace or combine the points we need to use replace point
To add or remove a point we need to use the add/remove point
Mid surface after cleaning the geometry

After cleaning geometry we need to mesh the surface
To mesh we need to select the surface and give the target element size and mesh the part
To alter the mesh we need to change the number of nodes

The major option for doing meshing is to perform the mesh if any flow issue is there we need to mesh

PLACE NODE to move the nodes freely to reduce the quality
Element optimizer will optimize the element quality
Smooth will smooth the mesh flow and adjust with respect to the min and max size
Split edges are used to split the edge of the quads
Drag tria which used to drag the trias from one point to another point
combine trias it will combine two tria in a quad
Parts that are been meshed

CONCLUSION:-

We must clean the geometry of mid surface before entering into the mesh
We must avoid trias which are facing opposite and back to back
We must provide a perpendicular construction line which enhances the quality of the mesh
Avoiding trias in a certain area is difficult then we must give space between them
While comparing tria vs quality, we must give importance to quality first
By understanding the symmetrical structure of the part we can minimize the time

Ship work like this
in your own course.