Hi everyone!
I'm trying to simulate a ball falling in a plate using COMSOL solid mechanics.
I tried to simulate it by prescribed displacement of the ball with a wave function (so the ball impacts and rebounds without fall infinitely). However, I would like to precisely measure the plate's deformation profile as material energy absorbed response. (I am using the johnson-cook plasticity model for the plate).
But the problem is that this boundary imposes the penetration value instead of being a response from the plate's material.
I thought to use a contact model that measures the overlap of materials (like LSD, constantly used in DEM simulations). However, COMSOL does not allow the use of elaborated contact models in the mechanical module.
So, what is the more realistic boundary condition to simulate the ball rebounds as a response of the plate material?
Use Dytran or Dyna3D(now nastran SOL107?)
They are Explicit FEM program.
Very expensive program.
They use impact situation.
SPH (smoothed particel hydrolic), meshless FEM is also available from this software.
If you want to know this software,
Visit Hexagon, MSC software homepage.
Good luck
Are you visit MSCsoftware Homepage?
If you or your organization purchase these software.
There are Theory manual.
These things are just summary of academic theroy of lecture or textbook
but it is good summary.
They lead to you restudry or research our material given at university lecture time.
You shoud know time direct integration method.
Rungee Kutta (?) method.
and Finite Element Method.
There are many Numerical Schem like FVM, FDM, BEM for fluid dynamics.
But only FEM is general method and can solve every engineering problem.
But it is approximation, So, accracy depend on users' experinece, engineering sense.
I don't know about COMSOL
but gorvening equation probable same,
and calculation logic probably simmilar,
I think this time is study FEM, implicity, and Explicity.
Good luck
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