Challenge

Week 12:Project 2-Meshing of Rear Wheel Holder challenge

OBJECTIVE:

To mesh the component given below and assign thickness.

Target Element Length = 5 Units

PROCEDURE:

1. ANALYSIS OF THE COMPONENT

the given component is the floor panel of a car.
the component is sheet metal with same thickness.
the component has a thickness of 0.75 .
the given component has many circular and converging areas so the tria percentage will be high.

2. GEOMETRY CLEANUP

model has to be uploaded to hyperworks and has to be checked for deformations.
we can see many components there we have to organise it into one component.
gaps found has to be filled using filler surface option or possible gaps can be toggled or surface can be created.
we can observe that some surface has been not created we have to create the surface by ruled option.

these circular areas can be deleted and can be filled using unsplit option in quick edit.

3.MIDSURFACE GENERATION

we can use auto midsurface to extract the midsurface and also we can go for manual mid surface.
since it is a sheet metal and of uniform thickness we can go for auto extraction.
go to geometry>midsurface>go to extraction option>change to offset+planes+sweeps.

then go to extraction option and select the surface to be extracted by face and put the option in closed solid and press extract.

4.CLEANING OF MIDSURFACE

deformations can be corrected by using toggle line option or by replacing points option from quick edit panel.
if there is no connection between midsurfaces obtained we can extend it to make connections.
if any area fail for minimum length we can even toggle some lines.
after the mid surface extraction some areas will not be perfect we can make it perfect creating surface by using ruled option in surface.
geometry>surfaces>ruled>create.

5.QUALITY CRITERIA

6.MESHING

mesh obtained will have trias.
we should reduce maximum possible trais.
we can drag the possible ones out or combine the opposite trias.
no trias should be there at the corners and free edges in our mesh.
opposite trias shouldnt be there in our mesh.
no trias should be there at the fillets and hemmings if there reduce it to minimum.
no rotational quads should be there in our meshed parts.
connectivity of elements has to be ensured.
for good mesh flow and proper mesh we should do smoothing.
2D>quality index>smooth.

QUALITY INDEX option is used to make our mesh a better one and to reduce errors and trias.

Place node: Used to manually move a node.
Smooth: Used to smooth the elements to get better mesh flow.
Swap edge: To swap the edges of the element.
Node optimize: Place the node in an optimize position in order to reduce the errors.
Element optimize: Optimize the elements in order to reduce errors.
Split\collapse edges: Used to split the elements.
Drag tria elements: To move the trias in the mesh.
Split quad elements: To split the quad elements.
Combine tria elements: Used to combine two tria elements.

7.CONNECTIONS

8.NORMALS AND FREE EDGES

go to tools >normals>displayed 2D elements>colour display >press display.
if any one side has a combination of colours then we have to press adjust for adjusting it.
by doing so almost all errors will be cleared if not select manually and clear it.
press reverse to exist the normals.

9.ASSIGNING THICKNESS

after the meshing is done we can assign the thickness.
since the components have the same thickness we can assign thickness in one go.
we need to assign the property for it.
create a property card for the component.
then press on the property card and assign the thickness of 0.75 for the component.

to assign this property to the component right click on the component and press assign and select the respective thickness and press apply.
in order to see the thickness assigned switch the view to 2D detailed element representation.

RESULT:

THE GIVEN COMPONENT WAS MESHED AND THICKNESS WAS ASSIGNED.

Ship work like this
in your own course.