Contact
The program defines contact conditions between the body and the impact
plane automatically. You can define contact conditions between faces of
different components in an assembly. For global and component contact
conditions, only Free (No interaction)
and Bonded (No clearance) are
allowed. For local contact sets, the No
penetration contact option is available in addition to the Free (No interaction) and Bonded
(No clearance) options.
The study does not allow assembly components to detach from each other
during or after impact. However, you may be able to assess this possibility
based on stress results and contact forces. A disjointed body travels
in the direction of gravity until it comes into contact with the impact
plane or a No penetration contact
condition gets activated.
Node-to-Node contact is not allowed in drop
test studies.
Friction
You can specify a coefficient of friction between the body and the impact
plane and for contact sets with the No
Penetration contact condition option.
Energy Loss
Loss of energy occurs due to friction, damping, or plastic deformation
(for von Mises plasticity materials). Damping is not considered. If all
materials are linear elastic and the coefficient of friction is set to
zero, the impact causes no loss of energy and the model keeps bouncing
indefinitely.
Related Topics
Drop
Test - Materials
Drop
Test - Result Options
Drop
Test - Setup
Drop
Test - Solution Time After Impact
Drop
Test - Studies
Drop
Test - Viewing Results
Performing
Drop Test Analysis