Physical mechanism of ice/structure interaction
To obtain the effect of velocity and structural natural frequency (structural stiffness) on ice failure, an extended dynamic Van der Pol-based single degree-of-freedom ice/structure interaction model is developed. Three basic modes of response were reproduced: intermittent crushing, frequency lock-i...
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ftdoajarticles:oai:doaj.org/article:6211ddaf881541049f09bcb25010cbf9 2023-05-15T16:57:32+02:00 Physical mechanism of ice/structure interaction XU JI ERKAN OTERKUS 2018-04-01T00:00:00Z https://doi.org/10.1017/jog.2018.5 https://doaj.org/article/6211ddaf881541049f09bcb25010cbf9 EN eng Cambridge University Press https://www.cambridge.org/core/product/identifier/S0022143018000059/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.5 0022-1430 1727-5652 https://doaj.org/article/6211ddaf881541049f09bcb25010cbf9 Journal of Glaciology, Vol 64, Pp 197-207 (2018) energy balance ice dynamics ice physics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 article 2018 ftdoajarticles https://doi.org/10.1017/jog.2018.5 2023-03-12T01:30:59Z To obtain the effect of velocity and structural natural frequency (structural stiffness) on ice failure, an extended dynamic Van der Pol-based single degree-of-freedom ice/structure interaction model is developed. Three basic modes of response were reproduced: intermittent crushing, frequency lock-in and continuous crushing. Further analysis on the physical mechanism of ice/structure interaction is presented on the basis of feedback mechanism and energy mechanism, respectively. Internal effect and external effect from ice and structure were both explained in the feedback branch. Based on reproduced results, energy exchanges at different configurations are computed from the energy conservation using the first law of thermodynamics. A general conclusion on the predominant type of vibration when the ice velocity increases during the interaction process is forced, self-excited and forced in each of the three modes of responses. Ice force variations also show that there is more impulse energy during the lock-in range. Moreover, ice-induced vibration demonstrates an analogy of friction-induced self-excited vibration. Finally, the similarity between strain-stress curve and Stribeck curve shows that static and kinetic friction force variations are attributed to ice force characteristic, and can be used to explain the lower effective pressure magnitude during continuous crushing than the peak pressure during intermittent crushing. Article in Journal/Newspaper Journal of Glaciology Directory of Open Access Journals: DOAJ Articles Journal of Glaciology 64 244 197 207 |
institution |
Open Polar |
collection |
Directory of Open Access Journals: DOAJ Articles |
op_collection_id |
ftdoajarticles |
language |
English |
topic |
energy balance ice dynamics ice physics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
spellingShingle |
energy balance ice dynamics ice physics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 XU JI ERKAN OTERKUS Physical mechanism of ice/structure interaction |
topic_facet |
energy balance ice dynamics ice physics Environmental sciences GE1-350 Meteorology. Climatology QC851-999 |
description |
To obtain the effect of velocity and structural natural frequency (structural stiffness) on ice failure, an extended dynamic Van der Pol-based single degree-of-freedom ice/structure interaction model is developed. Three basic modes of response were reproduced: intermittent crushing, frequency lock-in and continuous crushing. Further analysis on the physical mechanism of ice/structure interaction is presented on the basis of feedback mechanism and energy mechanism, respectively. Internal effect and external effect from ice and structure were both explained in the feedback branch. Based on reproduced results, energy exchanges at different configurations are computed from the energy conservation using the first law of thermodynamics. A general conclusion on the predominant type of vibration when the ice velocity increases during the interaction process is forced, self-excited and forced in each of the three modes of responses. Ice force variations also show that there is more impulse energy during the lock-in range. Moreover, ice-induced vibration demonstrates an analogy of friction-induced self-excited vibration. Finally, the similarity between strain-stress curve and Stribeck curve shows that static and kinetic friction force variations are attributed to ice force characteristic, and can be used to explain the lower effective pressure magnitude during continuous crushing than the peak pressure during intermittent crushing. |
format |
Article in Journal/Newspaper |
author |
XU JI ERKAN OTERKUS |
author_facet |
XU JI ERKAN OTERKUS |
author_sort |
XU JI |
title |
Physical mechanism of ice/structure interaction |
title_short |
Physical mechanism of ice/structure interaction |
title_full |
Physical mechanism of ice/structure interaction |
title_fullStr |
Physical mechanism of ice/structure interaction |
title_full_unstemmed |
Physical mechanism of ice/structure interaction |
title_sort |
physical mechanism of ice/structure interaction |
publisher |
Cambridge University Press |
publishDate |
2018 |
url |
https://doi.org/10.1017/jog.2018.5 https://doaj.org/article/6211ddaf881541049f09bcb25010cbf9 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology, Vol 64, Pp 197-207 (2018) |
op_relation |
https://www.cambridge.org/core/product/identifier/S0022143018000059/type/journal_article https://doaj.org/toc/0022-1430 https://doaj.org/toc/1727-5652 doi:10.1017/jog.2018.5 0022-1430 1727-5652 https://doaj.org/article/6211ddaf881541049f09bcb25010cbf9 |
op_doi |
https://doi.org/10.1017/jog.2018.5 |
container_title |
Journal of Glaciology |
container_volume |
64 |
container_issue |
244 |
container_start_page |
197 |
op_container_end_page |
207 |
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1766049104837738496 |