Week - 3 Drop test Challenge

Objective : To create a simlulation file for drop test of cellphone from given key file using different keywords ,cards , boundary conditons.

Procedure : As we already have the mesh which contains solid mesh of a cellphone and rigid surface.

Now we will assign section to these components, as both the components have solid mesh so we will use section solid

Now we will assign material to both components, For cellphone I have used mat24(piecewise linear plastic) and for solid surface mat20(rigid material).

Now assign boundary conditions to the parts , as for base plate we have to contrain it in all degree of freedom

Similarly we will give velocity of 7500mm/s to the cellphone from initial velocity card

Now we will give automatic surface to surface contact between cellphone and base plate

And finally we will assign control cards to the assembly such as termination , d3plot and energy cards

Result:

After assigning all the control cards and boundary conditions no wthe fill is ready to simulate , Save the keyword file and run the simulation in LSDyna manager

Using Ls Prepost we will the output by importing d3plot file

Von-mises stress contours:

Energy Plots :

Conclusion: The simulation of given keyword file is performed on ls dyna by preparing the deck in ls prepost using keywords, boundary conditions , contacts and control cards , We can clearly see the energy plot and stress generated in cell phone.