Week 9-Creation of 1D Connectors Challenge

Aim :

• Creation of 1D Collectors

Objective :

Create 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 component left Join them with suitable connectors

Procedure :

Open the given .hm model file 

first, we need to clean up the geometry as per the need 

 2D meshing to the individual component

2D >> automesh >> mixed type mesh (element size 5)

Front truss_1 

split the surfaces for creating the proper mesh. Geometry >> Quick edit (F11)

Generate 2D mesh. Then reflect on the mesh.

Tool >> reflect 

Do equivalence. Tool >> edges >> preview equivalence >> equivalence 

 

Keep the same process for every component while meshing

Front Truss _2

Reinf plate, Right rail_1, Right rail_2

 

Left rail_1,Left rail_2,Rear truss_1,Rear truss_2 

Assigning the Property Card:

• one property card is added to every component 
• Assuming every comp has an identical thickness and material, a single card is added to each
• To create a material card:name=steel-type=ISOTROPIC-card=MAT1
• Then the necessary material value like Poisson's ratio, young modulus, etc are specified 
• The thickness of the component is also specified in the property card
• each card is assigned the property card which is linked to the martial card

1D Connectors

1. Seam-Quad(angled+capped+L)

For Right_Rail_2 & Front_truss_1

• To create the seam weld:2D >> connectors >> seam
• select the node (by path) on one of the components
• tolerance= specify the distance between two components which is 3mm
• select the two-component and keep imprint check on
• weld type is set as seam-quad (angled+capped+L)
• spacing is set as a target element size of 5mm

2. Quad elements

For Left_Rail_2 & Front_truss_1:-

• To create the seam weld:2D >> connectors >> seam
• select the node (by path) on one of the components
• tolerance= specify the distance between two components which is 3mm
• select the two-component and keep imprint check on
• weld type is set as quads
• spacing is set as a target element size of 5mm

3. Spot weld with 2 Layers and 5 mm Diameter

for  Front_truss_2, Front_truss_1 & Right_Rail_1

• create the spot weld : 2D >> connector >> spot 
• select the node (by path) on one of the components
• tolerance= specify the distance between two components which is 10mm
• select the two-component and keep imprint check on
• type weld
• spacing is set as a target element size of 5mm
• as we create the spot weld with 3 layers select num layers total3

4. Hexa (Adhesive)

for  Front_truss_2, Front_truss_1 & Left_Rail_1

• To create the seam weld:2D >> connectors >> seam
• select the node (by path) on one of the components
• tolerance= specify the distance between two components which is 10 mm
• select the two-component and keep imprint check on
• weld type is set as Hexa Adhesive
• width as 2mm,strips 1,coats 1, Hexa position to negative edge
• spacing is set as a target element size of 5mm

5. Bolt Connector:

For Rear_truss_2 & Right_Rail_2

• To create the seam weld:2D >> connectors >> bolt
• select the location we need bolt connection
• select the two-component which needed to fix
• note select the option to create the hole if none, as we don't have a physical hole this option, will create the hole
• select the tolerance value as 15

6. Bolt Connector

for Rear_truss_2 & Left_Rail_2

• To create the seam weld:2D >> connectors >> bolt
• select the location we need bolt connection
• select the two-component which needed to fix
• note select the option to create the hole if none, as we don't have a physical hole this option, will create the hole
• select the tolerance value as 15

7. Spot-weld with Rigid Elements

for Right_Rail_1 & Right_Rail_2

• to create the spot weld : 2D>> connector >> spot weld
• select the node by path 
• select the two components
• type as rigid 
• spacing as 5mm and tolerance as 10mm

8. Spot-weld with Spring Elements

for Left_Rail_1 & Left_Rail_2

• to create the spot weld : 2D>> connector >> spot weld
• select the node by path 
• select the two components
• type as springs  
• spacing as 5mm and tolerance as 10mm

9. Rest all the components left Join them with suitable connectors

Seam-Quad(angled+capped+L)

 

Hexa (Adhesive)

Bolt Connector

Spot-weld with Rigid Elements

Conclusion :

• All the components have meshed and all connectors are defined also successfully realized