For most braking systems, the transfer of the braking forces is achieved via the wheel-rail contact, making knowledge of wheel-rail contact as well as adhesion characteristics and third bodies vital for the design of brake systems. In the present chapter, the wheel-rail contact according to Hertzian theory as well as the resulting adhesion characteristics are reviewed. Special attention is put on third bodies, most notable water, leaves and sand.

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Wheel-Rail Contact

  • Raphael Pfaff

摘要

For most braking systems, the transfer of the braking forces is achieved via the wheel-rail contact, making knowledge of wheel-rail contact as well as adhesion characteristics and third bodies vital for the design of brake systems. In the present chapter, the wheel-rail contact according to Hertzian theory as well as the resulting adhesion characteristics are reviewed. Special attention is put on third bodies, most notable water, leaves and sand.