Challenge

Week - 5 - Modelling Spotwelds

OBJECTIVE:-

PROCESS:-

Given:-

CASE 1: Beam spotweld used.

Material and Section was taken as -

Velocity:- Using the conversion method, 50kmph was converted into 13.88mm/ms.

Boundary:- At the extreme end of the crashbox, SPC_BOUNDARY was created.

Rigidwall:-

Rigidwall was created at the opposite end of the SPC_Boundary.

Contact:- AUTOMATIC_SINGLE_SURFACE and TIED_SHELL_EDGE_TO_SURFACE was used.

Control:- The Termination is set to 10ms.

Database:-

ASCII option- ELOUT (For element Output Data), GLSTAT (Global Statistics), MATSUM (Material Energies), NODOUT (Nodal Displacement/Velocity/Acceleration data), RCFORC (Resultant Interface Forces), SECFORC (Cross Section Forces data).
BINARY_D3PLOT

CASE 2: Solid spotweld used.

OUTPUT:-

Von-mises Stress (Beam vs Solid) :

Beam Spotweld: Min- 1.00461 MPa ; Max- 1853.29 MPa

Solid SPotweld: Min- 55.1633 MPa ; Max- 1265.53

Glstat (Beam vs Solid) :

CONCLUSION :-

Hence from the above we can conclude that the Stress experienced in the Solid spotwelds is higer than that of Beam spotwelds.
Solid Spotwelds also offer greater resistance as it gives more stiffness to the weld elements as comapred to beam spotwelds.

Ship work like this
in your own course.