Challenge

Week 9-Creation of 1D Connectors Challenge

AIM

Mesh the given geometry. Provided below are the quality parameters that you have to follow.

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

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

MODEL

PROCEDURE

  • Open the hyperworks software.
  • Open the hm file in hyper mesh software in optistruct profile
  • The given model is an extracted midsurface so we have to mesh this model with proper mesh.
  • Give the quality criteria and mesh parameters.(preference>criteria/mesh parameters)
  • Go to 2D mesh menu and select automesh option, change the element size to 5, element type to mixed and select the mid surface and click mesh to generate the mesh.(2D>automesh>select surface>mesh)
  • After generating the mesh, check for the quality criteria, to perform the quality criteria.(2D>quality index)
  • Use element cleanup for fixing the off elements.(2D>elementclean up)
  • Next step is to give connection as per given.

Right_Rail_2 & Front_truss_1:- Seam-Quad(angled+capped+L)

  • Go to the connectors panel in 2D/3D.(2D>connectors>seam)
  • Now select the nodes where the weld has to be created by clicking nodes list.
  • Specify spacing as target length and select the components which are to be connected.
  • Specify the tolerance depends on distance between the components.
  • Select the type as Seam-Quad(angled+capped+L)
  • Hit on create to create seam weld
  • After the creation of weld shown below.

Left_Rail_2 & Front_truss_1:- Quad elements

  • Go to the connectors panel in 2D/3D.(2D>connectors>seam)
  • Now select the nodes where the weld has to be created by clicking nodes list.
  • Specify spacing as target length and select the components which are to be connected.
  • Specify the tolerance depends on distance between the components.
  • Select the type as Quad elements
  • Hit on create to create seam weld
  • After the creation of weld shown below.

Front_truss_2, Front_truss_1 & Right_Rail_1:- Spot weld with 2 Layers and 5 mm Diameter

  • Go to the connectors panel in 2D/3D.(2D>connectors>spot)
  • Now select the nodes where the weld has to be created by clicking nodes list.
  • Specify diameter and select the components which are to be connected.
  • Specify the tolerance depends on distance between the components.
  • Select the type as weld
  • Hit on create to create seam weld
  • After the creation of weld shown below.

Front_truss_2, Front_truss_1 & Left_Rail_1:- Hexa (Adhesive)

  • Go to the connectors panel in 2D/3D.(2D>connectors>seam)
  • Now select the nodes where the weld has to be created by clicking nodes list.
  • Specify spacing as target length and select the components which are to be connected.
  • Specify the tolerance depends on distance between the components.
  • Add the width of element.
  • Select the type as Hexa (Adhesive)
  • After the creation of weld shown below.

Rear_truss_2 & Right_Rail_2:- Bolt Connector

  • Go to the connectors panel in 2D/3D.(2D>connectors>seam)
  • Now select the nodes where the weld has to be created by clicking nodes list.
  • Select the components which are to be connected.
  • Specify the tolerance depends on distance between the components.
  • Select the type as Bolt(general).
  • After the creation of weld shown below.

Right_Rail_1 & Right_Rail_2:- Spot-weld with Rigid Elements

  • Go through same procedure that is explained in spot weld section
  • Change the type to Rigid
  • After the creation of weld shown below

Left_Rail_1 & Left_Rail_2:- Spot-weld with Spring Elements

  • Go through same procedure that is explained in spot weld section
  • Change the type to Spring
  • After the creation of weld shown below

CONCLUSION

The meshing and connnection has been successfully completed in the given model.

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