Week 12-Creation of 1D Connectors Challenge

Creation of 1D Connectors Challenge

Objective:

To mesh the given geometry and assign given quality parameters

The given Quality Criteria

Target Element size - 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	30
10	Max angle Tria	110
10	Tria %	15

Then to create a connector and Attach the various parts of the given model

1. Right_Rail_2 & Front_truss_1:- Seam-Quad(angled+capped+L)
2. Left_Rail_2 & Front_truss_1:- Quad elements
3. Front_truss_2, Front_truss_1 & Right_Rail_1:- Spot weld with 2 Layers and 5 mm Diameter
4. Front_truss_2, Front_truss_1 & Left_Rail_1:- Hexa (Adhesive)
5. Rear_truss_2 & Right_Rail_2:- Bolt Connector
6. Rear_truss_2 & Left_Rail_2:- Bolt Connector
7. Right_Rail_1 & Right_Rail_2:- Spot-weld with Rigid Elements
8. Left_Rail_1 & Left_Rail_2:- Spot-weld with Spring Elements
9. Rest all the components left Join them with suitable connectors

Procedures:

Geometry Import & meshing

The given the .iges file is Imported. The imported model is a surface component hence the model is next processed for 2d meshing as shown in Figure 1.

Figure 1: Meshed 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

1. To Create Seam-Quad(angled+capped+L) connector for Right_Rail_2 & Front_truss_1

• The Seam-Quad(angled+capped+L) connector is created by

Command: 2D+ Connectors+ seam+ location: nodelist (by path)+ components+ weld type: seam-quad (angled+capped+L)+ create

• While performing the command adapt the following parameters :
• tolerance = 10mm, ( Specify the search distance )
• keep the imprint check on
• The spacing = 5mm and the weld angle = 45 is which is based on alignment of two components.

Figure 3: Seam-Quad(angled+capped+L) connector

2. To Create Seam- Quad elements connector for Left_Rail_2 & Front_truss_1

• The seam weld: Connectors is created by

Command: 2D+ Connectors+ seam+ location: nodelist (by path)+ components+ weld type: quads+ create

• While performing the command adapt the following parameters :
• tolerance = 10mm, ( Specify the search distance )
• keep the imprint check on
• The spacing = 5mm (distance between the two adjacent weld elements)

Figure 4: Seam- Quad elements connector

3. To Create Spot weld with 2 Layers and 5 mm Diameter for Front_truss_2, Front_truss_1 & Right_Rail_1

• The spot weld is created by

Command: 2D+ connectors+ spot+ location: nodes (by path)+ components+ type:weld+ create

• While performing the command adapt the following parameters :
• Diameter = 5mm and number of layers as 2.

Figure 5: Spot weld with 2 Layers and 5 mm Diameter

4. To Create Hexa (Adhesive) for Front_truss_2, Front_truss_1 & Left_Rail_1

• Hexa (Adhesive) is created by

Command: 2D+ connectors+ seam+ location: nodes lists(by path)+ components+ type:hexa (Adhesive)+ create

• While performing the command adapt the following parameters :
• tolerance = 10mm, ( Specify the search distance )
• keep the imprint check on
• The spacing = 5mm (distance between the two adjacent weld elements)

Figure 6: Hexa (Adhesive) connector

5.To Create Bolt Connector for Rear_truss_2 & Right_Rail_2

• bolt connector is created by

Command: 2D+ connectors+ bolt+ location: nodes (by path)+ components+ type:bolt (general)+ create

• While performing the command adapt the following parameters :
• number of layers as 2.
• tolerance = 10mm, ( Specify the search distance )

Figure 7: bolt connector_1

6.To Create Bolt Connector for Rear_truss_2 & Left_Rail_2

Followed the same procedure from bolt connector_1

Figure 8: bolt connector_2

7. To Create Spot-weld with Rigid Elements for Right_Rail_1 & Right_Rail_2

• Similar to how spot welds were previously constructed, this spot weld is made using rigids rather than weld in the weld type as shown in figure 9.

Figure 9: Spot-weld with Rigid Elements

8. To Create Spot-weld with Spring Elements for Left_Rail_1 & Left_Rail_2

• Similar to how spot welds were previously constructed, this spot weld is made using spring rather than weld in the weld type as shown in figure 10.

Figure 10: Spot-weld with Spring Elements

9. For other components

The other components are connected by Seam- Quad elements and Spot-weld with Rigid Elements as shown in figure 11& 12

Figure 11: Seam- Quad elements connector for hole component

Figure 12: Spot-weld with Rigid Elements connector for rail elements

The final fully connected elements is shoen in figure 12.

Figure 13: final fully connected model.

Conclusion

As a result, all the parts have been integrated and the necessary connections have been identified and successfully implemented.