Example 3b.1
Given: A rectangular piece of Jello™, h=2 inches tall
by L=6 inches wide, sits on a plate with a piece of aluminum foil on top.
The foil is moved to the right by w=0.1 inch, with the Jello sticking
to it.
Req'd: Determine the shear strain in the Jello™.
Sol'n: The shear strain is the reduction in right angle (in radians):
g = w/h= (0.1 in.)/(2 in.) = g = 0.05 = 5.0%
This value of strain (5%) is much larger than that in typical engineering
systems.
