Thermally induced pulsatile motion of solids
| Autor: | James G.A. Croll |
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| Rok vydání: | 2008 |
| Předmět: | |
| Zdroj: | Proceedings of the Royal Society A: Mathematical, Physical and Engineering Sciences. 465:791-807 |
| ISSN: | 1471-2946 1364-5021 |
| DOI: | 10.1098/rspa.2008.0151 |
| Popis: | Solid objects lying on slopes for which gravity alone would be insufficient to overcome frictional resistance have long been known to experience downslope motions when subject to alternations in temperature. This paper will suggest that similar motions are possible in situations where gravity is either absent or even working against the prospective motions. It will be argued that the effects of differential material properties when the solid is subject to alternations of tension and compression, accompanying periodic cycles of high and low temperatures, can also produce motion. While most of the illustrative examples will be chosen from certain movements of either ice and ice-rich materials or asphalt pavements, it would appear that similar behaviour could be experienced by much wider classes of materials. It is suggested that this form of thermal ratchet process could be of importance far wider than is currently recognized. |
| Databáze: | OpenAIRE |
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