Dynamic coefficients in impact mechanics/Dunaamilised koefitsiendid loogimehaanikas
Since the erosion rate depends on energy exchange between particles and the material, a reformulation of the equations of the collision of two solid bodies is presented. The solution is adapted to the calculation of the energy, absorbed by the plain material surface during the impact of a spherical...
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| Published in | Proceedings of the Estonian Academy of Sciences. Engineering Vol. 12; no. 1; p. 26 |
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| Main Authors | , , |
| Format | Journal Article |
| Language | English |
| Published |
Estonian Academy Publishers
01.03.2006
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| Online Access | Get full text |
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| Summary: | Since the erosion rate depends on energy exchange between particles and the material, a reformulation of the equations of the collision of two solid bodies is presented. The solution is adapted to the calculation of the energy, absorbed by the plain material surface during the impact of a spherical particle. It has been observed that energy loss strongly depends on dynamic coefficients, on the coefficient of velocity restitution after impact, k, and coefficient of dynamic friction, f. The new method and experimental equipment for the determination of the coefficients are described. Key words: particle-wall collision, coefficient of restitution, coefficient of dynamic friction, energy dissipation. Erosiooni kiirus soltub energia vahetusest osakese ja katsetatava materjali vahel. On toodud kahe tahke keha kokkuporke valemi analuus neelduva energia arvutamiseks sfaarilise osakese loogil vastu tasapinnalist katsetatavat materjali. On naidatud, et energia neeldumine on ranges soltuvuses dunaamilistest koefitsientidest, mida toos on nimetatud kiiruse restauratsiooni koefitsiendiks parast looki (k) ja dunaamiliseks hoordekoefitsiendiks (f). On kirjeldatud uut meetodit ja eksperimentaalseadet nende koefitsientide maaramiseks. |
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| ISSN: | 1406-0175 |