During simulation, an additional parameter RMIN is provided for you. If the fitted
value of R is greater that RMIN, then the fitted value is used, otherwise RMIN is
used. During run time, R affects how quickly the bushing responds to changes in the
input.
In the figure below, the displacement is given a step input at T=2.0 seconds. The
displacement in the bushing changes from 0mm to -3mm between T=2.0 and T=2.1. The
step input is stopped at T=2.10 seconds. The test is run with RMIN. What is observed
is that as RMIN decreases, the bushing takes a longer time to respond to the input
that is provided. Figure 1.
A large value of R implies that most of the signal is classified as steady state, so
the static effects, which react instantaneously to input changes, will dominate. In
contrast, when R is small, most of the signal is classified as transient. Therefore
bushing internal dynamics will dominate the response and the response will be
somewhat slower.
