Week 5 Challenge : Surface wrap on Automotive Assembly
https://drive.google.com/file/d/1pgIj9ocpHn8kvrUN1TPbynazvkftaGAE/view?usp=share_link
AIM:To perform Surface wrap on Automotive Assembly
OBJECTIVE:
For the given models, check for the geometrical errors and delete surfaces which are unwanted for Surface wrap as shown in the videos. After clearing geometry, Merge all 3 models and perform surface wrap.
Target length for Wrap = 3 mm
EXPLANATION:
SURFACE MESHING: The surface mesh is a representation of a surface that consists of vertices, edges and faces. There are currently two distinct alternatives for the surface representation in the deformable meshing literature, namely triangular and simplex meshes. Triangular meshes are composed of triangle faces which share each of their edges with exactly one other triangle face.
Process of any simulation:
In this challenge we will be doing the pre-processing (Geometry and mesh only)of the given model in ANSA software.
PROCEDURE
- IMPORT THE GEOMETRY TO ANSA
- TOPOLOGICAL CLEANUP OF THE 3 COMPONENTS
In topological cleanup, we have to delete the unnecessary faces created (because of fillet,etc) like rings,spheres and discs.
Since we have to perform surface mesh and fluid is flowing external to the surface.the internal parts of the engine, gear box, transmissin are not considered.
we have to
- delete faces(Topological Cleanup)
ENGINE
TRANSMISSION
GEAR BOX
- ASSEMBLE(MERGE) THE 3 PARTS TOGETHER
OPEN THE ENGINE FILE AND THEN ADD TRANSMISSION AND GEAR BOX TO IT
this is done by using merge command
Now merge GEAR BOX using same method
- TO CLOSE THE GEOMETRY
Wherever the geometry is open i.e,it has presence of holes on surface we need to create a new surface to close 
there are some extra PIDs present (due to delete surfaces) to delete them use COMPRESS command
- START MESHING
We have to create a mesh having
- for this select Classic Mesh in Mesh Module.
- mesh length=3mm
To perform surface wrap. we need to select WRAP in ELEMENTs with Constant Length.
DEFINE WRAP PARAMETERS
give target length as 3 mm(as given in the problem statement)
select mesh parameters
DEFINE CONTENT PARAMETERS
Select all the PIDs on the left side and move them to right side
Surface Wrap is ready
comparing the actual geometry with surface wrap , it is seen that there is no significant differenc ebetween the two when target length is 3 mm. but when the target length is increased the differenc ebetween geometry and surface wrap is significant.
Hence As the mesh length increases the difference between the geometry and surface mesh is noticeable