Abstract
Throughout his career Manfred Heckl contributed significantly to the body of knowledge that helped to clarify the mechanisms governing the generation of rolling noise from trains. During a brief period at the Technical University in Berlin this author had the opportunity to collaborate with Prof. Heckl and to learn from his insights and expertise in this field. Here an important mechanism for the generation of noise from trains, the interaction force in the zone of contact between wheel and rail produced by the small scale roughness on their running surfaces, will be examined. Analytical techniques for predicting the interaction forces that include the effects of load and wheel and rail profile will be described. The implications for controlling the noise at the source will be examined and the noise reduction achieveable will be estimated using measured wheel and rail roughness data. [Work was supported by the European Rail Research Institute, Utrecht, The Netherlands.]
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