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Using the reference problem we apply damping during the blind
insertion of cohesive nodes through .
From trial and error we find that the optimal damping parameter,
described in Chapter 2, is
.
Figures 3.15 and 3.16
show the effect that linear damping has on node at time steps
( ) and ( ), respectively.
Compared to the velocity profiles due to blind insertion at these same times
(Figures 3.13 and 3.14),
damping does minimize the previous oscillatory effect. Only minor
oscillations are present at the time of insertion, but are then
completely dampened out.

Although damping does minimize the
nodal oscillations, it is quite cumbersome
to implement since we use a trial and error approach to
determine the optimal damping coefficients. In
order to use damping as efficiently as possible, we require an
analytical correlation between a given system and the appropriate
damping parameters. Unfortunately, derivation of such a
correlation is outside the scope of this research and is
left for future investigation.

** Next:** Dynamic Insertion with Pre-Stretch
** Up:** Dynamic Cohesive Node Insertion
** Previous:** Blind Cohesive Node Insertion
** Contents**
Mariusz Zaczek
2002-10-13