Project-2-Meshing of Door Inner Panel Challenge

Meshing of Door Inner Panel

Objective:

To mesh the Inner Door Panel model with provide quality parameters and assign thickness.

The given Quality Criteria

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

Procedures:

Geometry Import

The given the hm file is Imported. After the geometry has been imported, the model is next processed for midsurface extraction after being checked for any missing surfaces or triple cons. The geometry is divided in to two component (Top and Bottom) for proper manual midsuface extract as shown in Figure 1.

Figure 1: Inner Door Panel model

Quality Criteria

The quality criteria has been assigned as per the given data by Preference + Criteria File Settings. In the Criteria Editor dialog box as shown in Figure 2.

Figure 2: Criteria Editor dialog box

Extracted Midsurface

Midsurface can be extracted by Offset

Command: Geometry + Surface edit + Offset surface + select the surface + assign mid value of surface offset + extract.

Geomentry Cleanup

Clean the geometry by the use of Quick edit option in the geometry then use the Trim option in Surface edit to connect and delete the mismatched surface. Use washer split, split surf-node, split surf-line, release point, project point, replace point, & toggle edge features for apt surface for mesh generation as shown in Figure 3 & 4.

Figure 3: Extracted Top Midsurface

Figure 4: Extracted BottomMidsurface

Component Mesh

Generate the mesh of element size as 5mm with mixed element type.

Command: 2D + Automesh + All Surface + Mixed element + Create

Mesh Quality

The meshed component is re meshed to avoid poor mesh elements with rebuild mesh option on localizied element selection.then with the help of Clean up tools the proper mesh quality is achieved, i.e. element optimize, place node, node optimize, split quad element, & drag tria element as shown in Figure 5 & 6.

Figure 5: Top Midsurface with Mesh Quality

Figure 6: Midsurface with Mesh Quality

Assigning thickness

To properly thickness the elements, we must first add properties and modify the thickness value at the property. then you must modify the thickness value for this property. Thickness value for a property is located under "T" value under the property tab.

Figure 7: Created components & properties

Since the total component has 8 different thickness we have created 8 components and corresponding properties. Then we must alter the value of "T" to 1, 1.5, 1.75, 2, 2.5, 3, 5,& 13.5 mm. The property must be assigned to the component after it has been constructed in order for it to appear on the elements. Simply pick "Assign" from the context menu when doing a right-click on the component to accomplish this. The assigned thickness is shown in Figure 8.

Figure 8: Mesh elements with Assigned Thickness

Conclusion

Mid-surface is extracted from the provided model, and mesh is created in accordance with the provided quality criteria then thickness is assigned.