The mechanical effects of short-circuit currents in - Montefiore

Figure 3.17 Comparison calculated and measured relative
static strain Mid portal
As shown in Figure 3.12 force transducers K1 to
K4 allow to measure the static and the dynamic
forces in the conductor span and onto the mid
portal. Material strain is measured at the same
strain gauge measuring points as for the static
tests.
The calculation was performed for the first 4s of
the conductor fall process. As an example for the
very good agreement between calculation and
test results, Figure 3.18 and Figure 3.19 compare
the calculated and measured oscillograms,
together with the respective maximum values of
the tension forces K2, K3 and the selected
material strain at D 17 for the case A, i.e. without
counterweights.
Figure 3.18 Calculated and measured oscillograms for
measuring points K1 to K4, Case A .
41
Figure 3.19 Calculated and measured oscillograms for measuring
point D17
From the comparison of the calculated and measured
oscillograms and maximum values of forces and
material strains, as well as of the ESL-factors, it is
possible to speak of a very good agreement between
calculation and measurement [Ref 49].