Viswanathan, K and Chandrasekar, S (2022) Fifty years of Schallamach waves: from rubber friction to nanoscale fracture. In: Philosophical transactions. Series A, Mathematical, physical, and engineering sciences, 380 (2232). p. 20210339.
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Abstract
The question of how soft polymers slide against hard surfaces is of significant scientific interest, given its practical implications. Specifically, such systems commonly show interesting stick-slip dynamics, wherein the interface moves intermittently despite uniform remote loading. The year 2021 marked the 50th anniversary of the publication of a seminal paper by Adolf Schallamach (Wear, 1971), which first revealed an intimate link between stick-slip and moving detachment waves, now called Schallamach waves. We place Schallamach's results in a broader context and review subsequent investigations of stick-slip, before discussing recent observations of solitary Schallamach waves. This variant is not observable in standard contacts so that a special cylindrical contact must be used to quantify its properties. The latter configuration also reveals the occurrence of a dual wave-the so-called separation pulse-that propagates in a direction opposite to Schallamach waves. We show how the dual wave and other, more general, Schallamach-type waves can be described using continuum theory and provide pointers for future research. In the process, fundamental analogues of Schallamach-type waves emerge in nanoscale mechanics and interface fracture. The result is an ongoing application of lessons learnt from Schallamach-type waves to better understand these latter phenomena. This article is part of the theme issue 'Nanocracks in nature and industry'.
| Item Type: | Journal Article |
|---|---|
| Publication: | Philosophical transactions. Series A, Mathematical, physical, and engineering sciences |
| Publisher: | NLM (Medline) |
| Additional Information: | The copyright for this article belongs to the Authors. |
| Keywords: | dislocations; interface friction; nanoscale fracture; Schallamach waves; stick–slip; wave motion |
| Department/Centre: | Division of Mechanical Sciences > Mechanical Engineering |
| Date Deposited: | 22 Aug 2022 12:02 |
| Last Modified: | 22 Aug 2022 12:02 |
| URI: | https://eprints.iisc.ac.in/id/eprint/76149 |
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