346
R. dell’Erba
and initial position to overshoot the old equilibrium position. The result is shown in
Figs. 18.14 and 18.15 (we used different feedback); note as also the reaction time is
changed. Using higher feedback instabilities can be generated (see Fig. 18.15).
Case (a2) Poisson effect
In the second case, we change the interaction rules; the case is the same as the
preceding (without release, the leaders stop after movement and the motion steps
are 100), but the follower position is determined not only by a barycentric equation
but the rule takes into account the other coordinate. We call this method “mixed
coordinate.” In Fig. 18.16, we can see the configuration of the lattice over different
times together with the PE1 contour plot.
Lateral contraction can be seen. Note that there is a relaxation time, because the
followers need time to adapt themselves. This is due to the rules expression and can
Fig. 18.14 X Evolution j = 115 versus time (modified rule with feedback)
Fig. 18.15 X Evolution of the point j = 67 versus time (modified rule with feedback)
R. dell’Erba
and initial position to overshoot the old equilibrium position. The result is shown in
Figs. 18.14 and 18.15 (we used different feedback); note as also the reaction time is
changed. Using higher feedback instabilities can be generated (see Fig. 18.15).
Case (a2) Poisson effect
In the second case, we change the interaction rules; the case is the same as the
preceding (without release, the leaders stop after movement and the motion steps
are 100), but the follower position is determined not only by a barycentric equation
but the rule takes into account the other coordinate. We call this method “mixed
coordinate.” In Fig. 18.16, we can see the configuration of the lattice over different
times together with the PE1 contour plot.
Lateral contraction can be seen. Note that there is a relaxation time, because the
followers need time to adapt themselves. This is due to the rules expression and can
Fig. 18.14 X Evolution j = 115 versus time (modified rule with feedback)
Fig. 18.15 X Evolution of the point j = 67 versus time (modified rule with feedback)