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→6.4.7 Contact Spring Calculations
The influence of the dimensions can be illustrated best by using the single side fixed beam model (Fig. 6.20). For small deflections the following equation is valid:
:<math>F = \frac {3 x E x J}{L^3} x</math>
where J is the momentum of inertia of the rectangular cross section of the beam
:<math>J = \frac {B x D^3}{12}</math>
For springs with a circular cross-sectional area the momentum of inertia is
<math>J=\pi D^4/64</math>
<math>D= Durchmesser</math>
To avoid plastic deformation of the spring the max bending force σ cannot be max
