A report on the measured response of HSFV 1 to discrete vertical track irregularities (TN-DYN-44)

As originally designed, the vertical suspension of HSFV 1 incorporated rubber springs modelling the non-linear characteristic of DYN/10, Fig. 5. This characteristic was devised to give a constant (small-amplitude) bounce frequency of about 2.5 c.p.s. in all loading conditions. However the outcome was unsuccessful due to the fact that the...