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Can I use the interaction force to simulate the impact problem?

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Dear All,

I am trying to simulate a sphere ball impacting onto a plate or waveguide to investigate the acoustic emission signals during the collision. As I found there is very limited reference, I am wondering if it is possible to use a point force (equal to the interaction force during the collison) to replace the ball impacting onto the plate?

I can easily deduce the interaction force during impacting based on the contact of Hertz theory. However, I am not sure how it will influence my simulation with the force instead of the sphere ball. Will it matter a lot? I know that I should use the sphere ball for impacting in the model, but it seems very hard to simulate impacting problems with COMSOL. eg. I do not know how to give the ball a initial velocity and the penalty problem.

Your help is much appreciated!

Guoqiang Zhang


0 Replies Last Post 2 ott 2017, 12:26 GMT-4
COMSOL Moderator

Hello Guoqiang Zhang

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