Deflection time history

[Hussain2339]

Dear all

I am doing timber impact on the aluminum plates. My numerical and experimental curves have some lag.

Can you please advise, on how can I improve the model?

Picture is attached

 

[FEA way]

It's hard to say without knowing any details about the model. Can you share some information regarding the step type, boundary conditions, loads, material models and so on ? Screenshots would be useful as well.

 

[Hussain2339]

Load is applied as velocity to the reference point of projectile
Pice-wise linear plasticity model (Elasto plastic model)
For rest info please see the photo attached

 

[FEA way]

The plate is fixed on the edges, right ? Does it represent the supports used in the experimental setup well ? Is the projectile fully rigid ?

 

[Hussain2339]

The plate is fixed on the edge,and it represents the same support condition as in the experiment

The projectile is a deformable body with rigid body constraint

 

[FEA way]

All right but is the rigid body constraint applied to the whole projectile or just its back face, for instance ? If it's applied to the whole projectile, maybe you could try with a deformable projectile to see if this helps.