Week 12:Project-1-Meshing of Door Inner Panel Challenge

Aim:

To Extract the mid surface ,geometry clean up and create the mesh of given side door inner pannel.

Given Data:

Target Element Length = 4 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	6 Units
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	20
10	Max angle Tria	120
10	Tria %	10

Given CAD:

Procedure:

¬Intiallay import the CAD file to hypermesh.

¬Check the geometry failure and clean up the geometry.

Extract Mid Surface:

¬Now going to extract the mid surface using manual method.

¬its plastic components various thickness are availabe .

¬ Now going to split into two components its large components .

¬Split into two components name as components 1 and 2 respectively.

¬Now going to extract mid surface manually for components 1.

¬ Go to geo -surface edit - offset in below figure.

¬ Use offset option.

¬Select the components and goint to offset it .

¬Then duplicate the selected surface as given as current component.

¬Then choose the direction wherever you want and click ok.

¬Similary doing the same process to get midsurface to components 2.

¬Now create mid surface for ribs.

¬This type ribs are different thickness.

¬One easy way to get misurface for this ribs.

¬Go to Geometry - midsurafce - automidsurafce - click - drop down - and choose -final edit tool.

¬Then select surface pair option show two surfaces.

¬ Select the ribs two surfaces.

¬ Its create midsurface between the selected two surface.

¬ All the ribs are create the midsurafce in various thickness.

¬Full mid surafec extracted.

Meshing:

¬Before going to mesh the components assign the quality.

¬ Create the quality criteria file as given.

¬Start meshing the components in complex area.

¬Go to - 2D- Automesh - element size 4 , tick the alingn,size, skew link opposite edge.

¬Split area by area and mesh smoothly.

¬reduce the tria.

¬Go area by area and check the element issue also .

¬If check element errors while meshing its easy to clear the errors.

¬Completed the meshing given components.

¬Check the quality errors.

¬ If the errors available make suue to clear it.

¬Cleared the all quality errors.

Assign the thickness:

¬ There are ribs and surface are various thickness .

¬ Arrange the same thickness in same components.

¬ Tools - organize - element - move option helps to thickness components.

¬Create the property card for all the thickness and assign the respective components.

Conclusion:

¬Extract the midsurface, geometry clean up, mesh and clear quality issue.

¬Learn to Extract manual mid surface.

¬Learn to extract mid surface for ribs and various thickness surface.

¬Learn to clear the quality issue.

¬learn to create property and assign the thickness.