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Tribology

Flash temperatures

Although exact solutions for the surface temperatures due to a heat source acting on a single moving body are well-known, in the usual tribological situation where the heat is shared between two bodies only empirical rules are available except when both bodies move at high speeds in the same direction. An exact solution for two bodies moving at high speeds in opposite directions has been found equation1 with the unexpected property that the maximum temperature (in the middle) has the same magnitude as if the bodies moved in the same sense past the same, uniform heat source (when it would be at the end).

Relevant/recent publications

  1. Greenwood, J. A. 'An interpolation formula for flash temperatures' Wear, 150, pp153-156 (1991).
  2. Greenwood, J. A. 'Flash temperatures for bodies moving at equal high speeds in opposite directions' Trans. ASME J. Tribology, 118, pp255-257 (1996).

Contact Details

For further information on the work summarised above contact Dr J A Greenwood at Cambridge University Engineering Department, Trumpington St, Cambridge, CB2 1PZ, UK. Tel: 01223 332733, Fax: 01223 332662. E-mail: jag@eng.cam.ac.uk
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