Multiple Preloads

The following equations show the method for computing the bushing output for multiple preloads.

Let:

• n be the number of preloads in the test data; $i$ be the current load case.
• Sort the preloads $P_i$ and renumber the preloads such that $P_1<P_2<\mathrm{...}<P_n$ .
• $x_i$ be the filter output corresponding to the $i^{th}$ load case.
• $F{0}_i$ be the static response of the bushing corresponding to the $i^{th}$ load case.
• $f_i$ be the dynamic response corresponding to the $i^{th}$ load case.

Then for each preload, $P_i$ , defines weights $W_i$ :

Figure 1.

And the total force is calculated as:

Figure 2.

as you see detailed in the following figure:

Figure 3.