The state of stress induced by the plane frictionless cylindrical contact. I. The case of elastic similarity

Michele Ciavarella, Paolo Decuzzi

Research output: Contribution to journalArticle

86 Scopus citations

Abstract

The contact problem between cylindrical conformal surfaces, modelling for instance a fastener joint, is studied. A closed form solution is obtained in Part I of the paper for the case of elastic similarity, improving (i) the solution obtained by Persson (On the Stress Distribution of Cylindrical Elastic Bodies in Contact, Ph.D. dissertation, 1964), which was also limited to identical materials, and (ii) the results of Noble and Hussain (Int. J. Engng. Sci. 7 (1969) 1149), which were limited to the case of perfect fit of contacting materials. The variation of the contact area, pressure distribution and maximum sustainable load is given for the complete range of possible dimensionless loading parameter Ep1 *ΔR/Q and first Dundurs' material parameter, α. Under conditions of initial clearance, the contact area arc, ε, increases with load from zero to a limiting value, εlim, which depends only on the material parameter α. Vice versa, under conditions of initial interference, the contact is complete until there is detachment and the contact area starts to decrease with load up to the same limiting value, εlim, which is also the only possible value of contact area for neat-fit conditions, under any applied load. Finally, a complete assessment of the strength of the contact is given for the entire range of working conditions. As expected, the strength of the joint decreases rapidly if the extent of the contact area reduces, and finally tends to the limit predicted by the Hertzian theory when the arc of contact is smaller than about 30°. The optimal conditions for avoiding yielding are reached for a contact arc smaller than the limiting arc εlim: This means that it is not possible to reach the optimum from a configuration of initial interference.

Original languageEnglish (US)
Pages (from-to)4507-4523
Number of pages17
JournalInternational Journal of Solids and Structures
Volume38
Issue number26-27
DOIs
StatePublished - May 15 2001
Externally publishedYes

Keywords

  • Cylindrical contact
  • Elastic similarity
  • Stress

ASJC Scopus subject areas

  • Mechanical Engineering
  • Mechanics of Materials

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