User`s guide

9 Design Case Studies
9-44
process exhibits some degree of cross-coupling between axes. Physically, an
increase in hydraulic force along the -axis compresses the material, which in
turnboosts the repelling force on the -axis cylinders. The result is an increase
in -thickness and an equivalent (relative) d ecrease in hydraulic force along
the -axis.
The coupling between axes is as follows.
Figure 9-2: Coupling between the x- and y-axes
x
y
y
y
w
ex
w
ix
u
y
w
ey
w
iy
δ
x
g
xy
g
y
u
x
+
+
+
+
+
–
f
x
f
y
δ
y
+
g
yx
g
x
–
x-axis
model
y-axis
model
g
xy
0.1=
g
yx
0.4=