Challenge

Week - 5 - Modelling Spotwelds

KKishor Hendre19 Jul 2022

LS-DYNA

Modelling of Spotweld with Beam and Solid Elements in LS-DYNA

Aim: - To model spot welds between the given surfaces using Beam and Solid elements and compare the results.

Explanation: -

1] Spotwelds Using Beam Elements

Create Spotwelds in the model - the model containing the upper and lower surfaces can be seen in LS-PrePost as shown below.
Image 1: Given Model in LS-PrePost
The Spotweld using beam element created using Mesh - EleGen - Beam By - Two_Node_Sets.
Image 2: Beam Elements Created
Image 3: Boundary Prescribed motion set card
Image 4: Boundary SPC Set
Image 5: Constrained generalized weld spot
Image 6: Contact defined
Image 7: Control parameters
Image 8: Curve Defined
Image 9: Beam Element Created
Image 10: Element
Image 11: Shell Element Created
Image 12: Elastic Material Defined
Image 13: Mat Spotweld
Image 14: Node Creation
Image 15: Part Creation
Image 16: Section Beam Creation
Image 17: Section Shell Creation
Image 18: Set Node Creation
Image 19: Setting Part List
Image 20: Inserting Title Name
Image 21: Inserting Database
Image 22: Binary D3PLOT
Image 23: Database History Node

2] Spotwelds Using Solid Elements

Image 24: Solid Spotweld Created
Image 25: Boundary Condition Setting
Image 26: Solid Element Creation
Image 27: Normal Termination
Post-Processing=
Image 28: Failure analysis of Solid Spot welding
Image 29: Shear Force for Solid Spotweld
Image 30: A shear force for Beam Element

Conclusion: Shear force graph plotted for both Beam and Solid Elements. A Solid Spot weld has high strength compared to Beam Element Because the beam element has only 2 nodes to hold the impact compared to the solid element which has 8 nodes to hold the spot weld.

Week - 5 - Modelling Spotwelds

Ship work like this
in your own course.

Talk to a career counsellor

Ship work like thisin your own course.

Talk to a career counsellor

Ship work like this
in your own course.