Specifications
236
combinations you may notice muscles beginning to bulge more and momentarily attain the color
of magenta. This is the system's way of demonstrating that the muscles have been loaded above 100% of
their strength. The reason why this happens is that, as the seat rises, the model gets into positions where it
is difficult for the feet to reach the pedals. Just before the feet cannot reach the pedals the knee movements
are accelerated causing large inertia forces in the system. All this happens a bit more drastically in an ideal
rigid body model than it would in real life where joints have a bit of slack, segments are slightly elastic, and
the prescribed kinematics may be compromised. You can see very clearly what happens if you go back to
the AnyChart View and study the new surface:
The surface is now completely dominated by the one combination, which is difficult for the model to do. You
can still see the surface shape if you change the scale of the value axis. This and all other settings are
available if you click the
button in the toolbar. Doing so will produce a window with a tree view in
which you can select ValueAxis->Max. Try setting Max to 0.2 and you should obtain the following:










