Paper IV (iv) Modification of the Two-Body Contact Conditions to Account for the third Body

Autor: J.J. Kalker
Rok vydání: 1992
Předmět:
Zdroj: Wear Particles: Frorn the Cradle to the Grave, Proceedings of the 18th Leeds-Lyon Symposium on Tribology ISBN: 9780444893369
DOI: 10.1016/s0167-8922(08)70523-6
Popis: A phenomenological mathematical description will be given of three body contact which is based on the condition that the third body is much weaker and more pliable than the two first bodies. It will be applied to wheel-rail rolling contact, where it results in the occurrence of a single extra material constant in the two-body equations which must be determined experimentally. It is found that with the aid of this constant the experiments fit a theoretical line. Also, this third body description can account for the empirical reduction factor of the creepage and spin coefficients C ij (see Kalker (1990) App. E) used by vehicle dynamicists in their calculation of the critical speed of railway vehicles.
Databáze: OpenAIRE