Hello all
I want to investigate the contact force and displacement of central node of a 3D-Elastic plate in impact with a elastic sphere.
the initial velocity of sphere is low (about 0.1-0.5 m/s)
what is the best interaction to define between models surfaces in ABAQUS?
Kind regards
Hello Masoud Ahmadi,
I agree with Mr. Yasseri, a general contact works well without much work. You need not give any interaction properties (just create one interaction property without any property options).
If you do know the interaction properties, then the simulation can be made much more accurate (though on the expense of speed and size).
Since your velocity is very slow, I don't think you need a Kinematic contact algorithm.
Go for the "penalty" method instead. .The penalty enforcement method is always used by the general contact algorithm, so you don't need to especially provide it too. This can be especially useful if you have multiple contacts on your nodes. Also, since you are focusing on a particular node, I must point out that "The penalty contact algorithm searches for slave node penetrations in the current configuration, including node-into-face, node-into-analytical rigid surface, and edge-into-edge penetrations".
But take note, the penalty method can influence the stable time increment.
You can also add Friction values, if you know them, though I would deem them unnecessary for such low velocity impacts.
With regards,
Vikrant Srivastava
Thanks for answering Mr Yasseri
I used surface-to-surface contact with penalty method, but what about interaction property?
and one more thing: Which one is better? (best simulation and more natural)
Hello Masoud Ahmadi,
I agree with Mr. Yasseri, a general contact works well without much work. You need not give any interaction properties (just create one interaction property without any property options).
If you do know the interaction properties, then the simulation can be made much more accurate (though on the expense of speed and size).
Since your velocity is very slow, I don't think you need a Kinematic contact algorithm.
Go for the "penalty" method instead. .The penalty enforcement method is always used by the general contact algorithm, so you don't need to especially provide it too. This can be especially useful if you have multiple contacts on your nodes. Also, since you are focusing on a particular node, I must point out that "The penalty contact algorithm searches for slave node penetrations in the current configuration, including node-into-face, node-into-analytical rigid surface, and edge-into-edge penetrations".
But take note, the penalty method can influence the stable time increment.
You can also add Friction values, if you know them, though I would deem them unnecessary for such low velocity impacts.
With regards,
Vikrant Srivastava
I did some simulations of the metal cutting process, and the contact between the tool and the workpiece in my model is surface-to surface contact(explicit), and I found that it worked very well!
If you select frictionless behavior for your contact, you do not need to define interaction properties.
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