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

aim :

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

model :

prcedure:

• Import the model in hypermesh using import geometry option.
• delete if solids are present in the geometry. delete them
• check if the geometry has and any face has discrepancy such as missing face or something. if missing face is there generate it uisng geom--> surfaces
• extract mid surface using offset option as it gives better results than the skin method.
• feed the quality and parameter criteria and save it as a file. in parameter file give fillet radius less than min element length.
• feed the criteria and parameter file in 2D-->automesh-->batchmesh.
• generate mesh. after generating mesh go to topology revision option in preferences select dissociate mesh.
• 
• delete the elements when and where rebuild mesh is not giving good result .
• at some places turn on topology revison to remesh and make split for getting good mesh flow.
• for the region where the is no associativity of mesh with surface orspliting the surface is creating the duplicated there make make lines with option fromfe.
• then trim the surfaces with lines keppiing along line normal.
• mesh the surface using automesh. and use edge edit--> comands element preview eq functionality to to stich the mesh. for elements which are not stitched by edge edit stich them by using replace command in 2D.
• 
• use edit element split command to split diamond quads into two tria, and two quads. use the same option to move tria forward.
• use command in quality index --> cleanup tools , like swap drag tia , element optimise node optimise replace nodes etc.
• another way to split quad is using split collapsed edge option in element cleanup tool.
• make sure there is good mesh flow, to make mesh flow smoother use smooth element.
• for directional changes in mesh flow split the surface in mesh flow direction and remesh it
• for min distance and max distance element failure use distance command if element cleanup tool does not work.
• repeat the process until a good mesh flow is achieved.
• model pictures .
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• mesh flow after splits.
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CONCLUSION: By doing this project we learnt how to mesh sheet metal components .