Cleanup and Meshing of Backdoor using HYPERMESH

Objective: Meshing of Backdoor using HYPERMESH

Procedure:

• Importing CAD model
• Extracting mid surface
• Assigning quality criteria given for the components
• Meshing of each component
• Checking quality index and making element clean up with zero errors
• Assigning property, thickness and materials

Importing CAD model

Importing CAD model by import model option. Now select one component to start extraction of mid surface

Extracting mid surface

By use of mid surface option in geom , select best possible extraction option to extract mid surface by selecting surface. Each components will have it own mid surface individually

Assigning Quality criteria

Quality criteria is given in Criteria settings present in references tab at top tool bar

The criterias are as follows:

S.N	Quality Criteria	Value
1	Aspect Ratio	5
2	Skewness	45
3	Warping	15
4	Taper	0.5
5	Min. Length	4mm
6	Max. Length	7mm
7	Min angle Quad	45
8	Max angle Quad	135
9	Min angle Tria	30
10	Max angle Tria	110
10	Tria %	15

Meshing of components:

• In order to simplify the meshing of Backdoor, inner and outer hood meshing is done on one of the side only and the reflect option is used to reflect the mesh elements on other side
• In order to reflect elements, go to tools>reflect >select elements amke duplicate of them and store them in current components>select z axis center to reflect the elements
• Element size of 5mm is use for meshing in 2D option
• In order to make mesh look good , different tools in quick edit , replace options are used to make meshing good

Tools like toogle, washer split, split, trim node-node, add/remove points, replace are used

Inner Backdoor panel

Mesh of Inner Backddor panel

Backdoor Upper body

Mesh Backdoor Upper body

Backdoor Lower body

Mesh Backdoor Lower body

Quality index checkup and element cleanup

• Go to quality index to check up mesh
• perform the element cleanup with help of cleaning tools like place node, drag tria, element optimize, spliting quad,spliting elements all these tools are used to make mesh error free.

Assigning property with thickness and material

Assign property select PSHELL element give material steel assign it in property and then assign the property on component and give thickness for inner ,upper and lower body is 7.5mm

Conclusion:

• Mid surface extraction and meshing of Backdoor was successfully performed