Calculator for a single notched hinge
Diameter hole D
10
-3
m
Ridge height h
10
-3
m
Plate thickness t
10
-3
m
Young's modulus E
10
9
Pa
Poisson constant v
Elastic limit R
p0.2
10
6
Pa
Modulus of elasticity for plane strain E
10
9
Pa
Normal stiffness cxx
10
6
N/m
Ratio shearing stiffness to tensile stiffness
Rotational stiffness k
Nm/rad
Maximum angle of rotation ψ
max
10
-3
rad
Maximum angle of rotation α
max
deg
Maximum torque T = k ψ
Nm
Calculated values based on the Design chart for cylindrical hole hinges (Figure 14.6)Example of a flexure mechanism with multiple hole hinges; credit card sized piezo actuated nano precision XY stage with motion amplifier (Figure 14.13).
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