Elastic rail pads and sandwich plates

Important precondition: Elasticity 

The elasticity of the rails and the components of the permanent way supporting these represent an important precondition for the functions of the transmission and distribution of load. Realization of a desired degree of rigidity (resilience) beneath the rolling load and additional reducing of the vibration and structure-borne sound emissions are possible solely with elastic elements. Their effectiveness is determined primarily by their elastic and cushioning properties. Belonging to the elastic elements of a permanent way are - in addition to the ballast, sleeper soling and mass-spring systems - the elastic components of the rail fastenings.

Standard solutions and purpose-built items

With a targeted selection of materials, processing methods and foaming methods as well as of the design of the elastic component for rail fastenings, we are also able to offer you - in addition to typical standard solutions for railways - purpose-built items for every area of application. 

For example with the design shown in the photo an asymmetric bilinear load-deflection curve has been realized for local railway systems. With these systems the static rigidity can be varied from less than 5 kN/mm to more than 200 kN/mm. Asymmetry of the sinking or the bilinearity ensures the lowest possible deflection of the rail head as well as limiting of the integrated spring deflection as required by, for example, DB AG.

Bottom line:

Static rigidity of from < 5 kN/mm to > 200 kN/mm

Dynamic stiffening < 1.5

Long-term stability and stability in respect of climate coupled with high fatigue resistance

Increased passenger comfort with reduced noise and vibration emissions

Design matched to the customer's specific geometric and technical parameters

With high-speed traffic the rail fastenings rebound within milliseconds and ensure full elasticity for the 2nd axle of a bogie.