Week 9-Creation of 1D Connectors Challenge

Objective:- For this Challenge, you will have to mesh the given geometry, Provided below are the Quality Parameters that you have to follow and apply connections as per requirement.

Procedure:-

Import:-

The given Model is in .HM format Hence to import we used Import tool Import~Model. The below image shows the same.

Fig 1. Given Model

Meshing:-

In order to mesh we will first enter the given Quality criteria in the system to do we will go to Preference ~ Quality Criteria. The below image shows the same.

Fig 2. Given Quality criteria

In order to mesh, we will use surface, we will isolate each surface and mesh them.

once meshing, is done we will check if failing elements by Quality Index and Correct them using different tools we will remove the off elements the below image shows the meshed model after all issues are resolved.

Fig 3. Meshed Model

Connections :-

In order to check and access all connectors we will first enable connector tab from View~Browser~Hypermesh~Connector

1. Right Rail 2 and Front truss 1:- Seam - Quad ( Angle +Capped+L) :- In order to make seam weld connection as per requirement we will first isolate the components to be connected then we will go to 2d ~ Connector~seam. Now we will select weld type as seam - Quad ( Angled+Capped+L)

In order to create connection we will select node path at one component then select both components, and provide seach tolerance enough as both connections are included. we will keep weld angle as 60 degree and Cap angle as 70, it has to be selected in a way that it does not exceed the elements, the below image shows the result. The green nodes suggest that connection are realized successfully.

Fig 4. Seam Weld Connection ( angled+Capped+L) Parameters

Fig 5. Seam Weld Connection

2. Left Rail 2 and Front Truss 1:- ( Quad Elements )

In order to create quad connection we will first isolate the two components that are left rail 2 and Front truss 1. same as before we will go to 2d ~ Connector ~ Seam and select Quad as type.

Fig 6. Seam Weld Connection ( Quads ) Parameters

we will select node path, give spacing and tolerance same as earlier. we used imprint so that mesh in two different components can be aligned. Below image shows the same.

Fig 6. Seam Weld Connection ( Quads )

3. Front truss 2,Front truss 1 and Right rail 1:-

Spot weld with 2 layers and 5 mm diameter In order to create connection, we will first Isolate the two components, we will go to 2d ~ Connectors ~ Spot we will keep the type as weld.

The below image shows the setup.

Fig 7. Spot weld parameters

Similarily as before we will give node list we give spacing to match element size and select two components. Give diamater as mentioned and create connection. since three component were given and 2layer were to be selected and we have to repeat the Process once to get all components connected.

Fig 8. Spot weld connection

4.Front truss 2, Front truss 1 and left Rail:- (Hexa-Adhesive )

To make seam weld connection as per requirement we will first isolate the components to be connected.then we will go to 2d ~Connector~seam. Now we will select weld type as Hexa ( Adhesive ) similarily as before we will give node list and give spacing to match element size and select two components. Here we have to select width, strips and coats as per requirement.since three components were given, we have to repeat the process once to get all components connected. The below image shows the results. the given nodes suggests realized connections.

Fig 9. Hexa Adhesive Parameters

Fig 10. Hexa Adhesive Connection

5.Rear truss 2 and Right Rail 2:- ( Bolt Connection)

In order to use bolt connection we will go to 2d ~ connection ~Bolt and isolate the two components,the below image shows the procedure since we have to create a hole for bolt we will select nodes at center, we will select nodes at each side of the right rail. then we will select both components we will give search tolerance. As there is no hole we will have to change to create hole, if none-the below image shows the same.

Fig 11. Bolt Connection Parameters

Fig 12. Bolt Connection

6.Rear truss 2 and left Rail 2:- (Bolt Connection )

Hence we will use similar method as above, The below image shows the results.

Fig 13. Bolt Connection

7.Right Rail and Right Rail 2:-( Spot weld with Rigid elements)

In order to create connection we will first select the two components we will then go to 2d ~ Connecors ~ Spot we will keep the type as Rigid. The below image shows the setup.

Here we have to select the node list one on component. we will give spacing as 5 and select both the component. we will give dia of 5 and search distance. we will keep connection to be mesh dependent the below image show the results.

Fig 14. Spot Weld ( Rigid elements )

Fig 15. Spot weld Connection ( Rigid elements )

8.Left Rail 1 and Left Rail 2:-Spot weld ( Spring elements )

To create Connection we will first isolate the two components, we will then go to 2d~Connector~spot we will keep the type as spring.the below image shows the setup.

we have to select the node list one on component we will give spacing as 5 and select both the component we will give diameter of 5 and search distance. we will keep connection to be mesh dependent the below image shows the results.

Fig 16.Spot Weld Connection ( Spring elements ) Parameters

Fig 17. Spot Weld Connection ( Spring elements )

Rest of Components:For rest of Components,we used different connectors,below image shows the same.

Reinf Plate:

Fig 18. Reinf Plate ( Seam Connection)

Rear Truss 1 and 2:-

Fig 19. Rear Truss 1 and 2 ( Seam Connection )

Final Result:-

The below image shows the final result of the model after making all connections.

Fig 20. Final Model ( After Making all Connections)