Week - 4 - 2D meshing for Plastic components

                                                                          Plastic Bottle Cap 

Aim : For the given model , check for geometrical errors and to assign  the mid surface by using suitable mid surfacing  techniques  and maintain the proper mesh flow for the given quality criteria.

Procedure:

• To import the model to ANSA

• Set the Length of model as one initially 

           Faces---- Length----Perimeter & Macros as one

• To perform a geometrical check by using check manger to rectify the errors if any and to fix them by using the options below

• After geometry cleanup ,measure the thickness of the component as it is having various thickness 

• Now extract the midsurface for the given model by using suitable mid surfacing techniques 

• Faces-----Offset

 

• Or we can extract the mid surface by using Faces-----Middle option also

• we can also extract the midsurface by using Curves-----Middle

• Set  PID for the various thickness for the given plastic component as shown below

             FACES----SETPID

Meshing:

•   Fix the target length 

           Mesh---- Perimeters ---- Length

• Assign mesh parameters and Quality criteria values for the given model

• If any unwanted Hotpoints and Features lines are there remove them       

          Hotpoints-----Insert or  Delete

          Macros ----- cut to toggle the Features line

• Faces of the component should be meshed one by one

             Mesh---- Mesh Generation---Best   

• After mesh generation  reconstruct the  mesh if required

              Shell Mesh---- Reconstruction

.

• Check for OFF elements if any resolve them and maintain the mesh flow

• Use Elements-----Split 0r Grid --- paste to remove the unwanted trias 

• use Shell Mesh ---- Smooth option to maintain  the  mesh flow

• Check for any quality issues, if they are failing  resolve them and maintain better mesh flow

Results:

    Checked for the geometrical errors and extracted midsurface for Plastic bottle cap modle and meshed the Bottle Cap Component as per the given Quality criteria .