Abstract
Sliding contacts in engineering are always, properly, lubricated in some way, and therefore little damage should ensue. But when we have notionally stationary contacts, which may be bolted or established by some other methods, such as the generation of centrifugal loads in a gas turbine, or hydraulic action in a wellhead locking segment, secondary, fluctuating loads may cause tiny amounts of differential movement, or borrowing a word with an associated common usage ‘fretting’.
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Notes
- 1.
Or may both be represented by half-planes, see Chap. 3.
- 2.
Or certain other special combinations of materials, see Chap. 3.
- 3.
In fact, the material will ‘lap around’ the corners onto the side faces of the upper body; at least that is the implication of linear elastic theory. The phenomenon will not be pursued here but the interested reader may look up details in Churchman et al. (2006).
- 4.
This is precisely what happens in the presence of cohesive or adhesive forces, important in very small contacts; see Johnson et al. (1971).
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Hills, D.A., Andresen, H.N. (2021). Some Fundamentals. In: Mechanics of Fretting and Fretting Fatigue. Solid Mechanics and Its Applications, vol 266. Springer, Cham. https://doi.org/10.1007/978-3-030-70746-0_1
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DOI: https://doi.org/10.1007/978-3-030-70746-0_1
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