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

Objective:

• extract Midsurface and Follow the below-mentioned quality criteria, mesh the component given below and assign thickness:

Target Element Length = 5 Units

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	2 Units
6	Max. Length	8 Units
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	20
10	Max angle Tria	120
10	Tria %	10

CAD FILE:

PROCEDURE:

Step:1

The given component has beenimported into the hypermesh with Optistruct profile.

• Delete solids from the components.

• This component have geometrical errors which are to be fixed manually so that to generate a perfect mid surface of the component.

• The given probelm can be fixed by replacing the lines and using filler surface which is present in quick edit submenu of Geometry toolbar.

• After geometry cleanup next ,to define the criteria file which is required by our model meshing.

Step 2:

• Midsurface extraction done by auto extraction and offset surface method.Midsurface generated by the Geometry toolbar provided in the hypermesh.

• We have selected automidsuraface option with offset+planes+sweep midsurface option present with the model.

After midsurface we get the following components.

• After extracting we need to do midsurface cleanup before meshing the compoenets.

Step 3:

• Next step is meshing the components.meshed the component by using automesh.

• the components consists of failed elemens which doesn't meet the criteria.

• These elements need to be cleaned to get the requirement mesh criteria.
• The failed elements can be fixed using the element fixing tools in the quality criteria menu.
• While using the quality criteria menu the failed elements are highlighted in yellow and red colours.
• thickness is assigned to the components by creating the property card for the parts.

• After creating the property this card is assigned to the componets which provide the desired thickness.

Results&conclusions:

• Geometry cleanup has done
• mid surface extraction and cleanup done.
• meshed the component according to given quality criteria
• added thickness to the mesh elements.