variable stiffness Softshock mount delivers the combined requirements
of low frequency noise reduction and low deflection. Both are
requirements for railcar resilient floors.
rubber in shear and compression, the Softshock mount avoids the
problems associated with rubber in compression.
low loadings - when the railcar has few passengers - the mount
has low stiffness characteristics. This gives a resilient floor
with a low natural frequency, reducing the effect of low frequency
noise and vibration in the range below 300Hz. For higher loadings
- as passenger numbers increase - the mount has high stiffness
characteristics which prevents the total floor deflection becoming