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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ftustrathclyde:oai:strathprints.strath.ac.uk:62820 2024-04-28T08:26:51+00:00 Physical mechanism of ice-structure interaction Ji, Xu Oterkus, Erkan 2018-04-30 text https://strathprints.strath.ac.uk/62820/ https://strathprints.strath.ac.uk/62820/1/Ji_Oterkus_JG_2018_Physical_mechanism_of_ice_structure_interaction.pdf https://doi.org/10.1017/jog.2018.5 en eng https://strathprints.strath.ac.uk/62820/1/Ji_Oterkus_JG_2018_Physical_mechanism_of_ice_structure_interaction.pdf Ji, Xu <https://strathprints.strath.ac.uk/view/author/878040.html> and Oterkus, Erkan <https://strathprints.strath.ac.uk/view/author/830205.html> (2018 <https://strathprints.strath.ac.uk/view/year/2018.html>) Physical mechanism of ice-structure interaction. Journal of Glaciology <https://strathprints.strath.ac.uk/view/publications/Journal_of_Glaciology.html>, 64 (244). pp. 197-207. cc_by_nc Environmental Sciences Geology Article PeerReviewed 2018 ftustrathclyde https://doi.org/10.1017/jog.2018.5 2024-04-10T01:08:14Z 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 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 three modes of responses. Ice force variations also shows that there is more impulse energy during the lock-in range. Moreover, ice-induced vibration (IIV) 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 University of Strathclyde Glasgow: Strathprints Journal of Glaciology 64 244 197 207 |
institution |
Open Polar |
collection |
University of Strathclyde Glasgow: Strathprints |
op_collection_id |
ftustrathclyde |
language |
English |
topic |
Environmental Sciences Geology |
spellingShingle |
Environmental Sciences Geology Ji, Xu Oterkus, Erkan Physical mechanism of ice-structure interaction |
topic_facet |
Environmental Sciences Geology |
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 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 three modes of responses. Ice force variations also shows that there is more impulse energy during the lock-in range. Moreover, ice-induced vibration (IIV) 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 |
Ji, Xu Oterkus, Erkan |
author_facet |
Ji, Xu Oterkus, Erkan |
author_sort |
Ji, Xu |
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 |
publishDate |
2018 |
url |
https://strathprints.strath.ac.uk/62820/ https://strathprints.strath.ac.uk/62820/1/Ji_Oterkus_JG_2018_Physical_mechanism_of_ice_structure_interaction.pdf https://doi.org/10.1017/jog.2018.5 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_relation |
https://strathprints.strath.ac.uk/62820/1/Ji_Oterkus_JG_2018_Physical_mechanism_of_ice_structure_interaction.pdf Ji, Xu <https://strathprints.strath.ac.uk/view/author/878040.html> and Oterkus, Erkan <https://strathprints.strath.ac.uk/view/author/830205.html> (2018 <https://strathprints.strath.ac.uk/view/year/2018.html>) Physical mechanism of ice-structure interaction. Journal of Glaciology <https://strathprints.strath.ac.uk/view/publications/Journal_of_Glaciology.html>, 64 (244). pp. 197-207. |
op_rights |
cc_by_nc |
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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1797586071900389376 |