Dynamic models for impact-initiated stress waves through snow columns
Abstract The objective of this research is to model snow's response to dynamic, impact loading. Two constitutive relationships are considered: elastic and Maxwell-viscoelastic. These material models are applied to laboratory experiments consisting of 1000 individual impacts across 22 snow colum...
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Cambridge University Press (CUP)
2024
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Online Access: | http://dx.doi.org/10.1017/jog.2024.26 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143024000261 |
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crcambridgeupr:10.1017/jog.2024.26 2024-09-15T18:15:37+00:00 Dynamic models for impact-initiated stress waves through snow columns Verplanck, Samuel Vincent Adams, Edward Eagan Montana State University 2024 http://dx.doi.org/10.1017/jog.2024.26 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143024000261 en eng Cambridge University Press (CUP) http://creativecommons.org/licenses/by/4.0/ Journal of Glaciology page 1-15 ISSN 0022-1430 1727-5652 journal-article 2024 crcambridgeupr https://doi.org/10.1017/jog.2024.26 2024-08-21T04:03:56Z Abstract The objective of this research is to model snow's response to dynamic, impact loading. Two constitutive relationships are considered: elastic and Maxwell-viscoelastic. These material models are applied to laboratory experiments consisting of 1000 individual impacts across 22 snow column configurations. The columns are 60 cm tall with a 30 cm by 30 cm cross-section. The snow ranges in density from 135 to 428 kg m −3 and is loaded with both short-duration (~1 ms) and long-duration (~10 ms) impacts. The Maxwell-viscoelastic model more accurately describes snow's response because it contains a mechanism for energy dissipation, which the elastic model does not. Furthermore, the ascertained model parameters show a clear dependence on impact duration; shorter duration impacts resulted in higher wave speeds and greater damping coefficients. The stress wave's magnitude is amplified when it hits a stiffer material because of the positive interference between incident and reflected waves. This phenomenon is observed in the laboratory and modeled with the governing equations. Article in Journal/Newspaper Journal of Glaciology Cambridge University Press Journal of Glaciology 1 35 |
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Cambridge University Press |
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crcambridgeupr |
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English |
description |
Abstract The objective of this research is to model snow's response to dynamic, impact loading. Two constitutive relationships are considered: elastic and Maxwell-viscoelastic. These material models are applied to laboratory experiments consisting of 1000 individual impacts across 22 snow column configurations. The columns are 60 cm tall with a 30 cm by 30 cm cross-section. The snow ranges in density from 135 to 428 kg m −3 and is loaded with both short-duration (~1 ms) and long-duration (~10 ms) impacts. The Maxwell-viscoelastic model more accurately describes snow's response because it contains a mechanism for energy dissipation, which the elastic model does not. Furthermore, the ascertained model parameters show a clear dependence on impact duration; shorter duration impacts resulted in higher wave speeds and greater damping coefficients. The stress wave's magnitude is amplified when it hits a stiffer material because of the positive interference between incident and reflected waves. This phenomenon is observed in the laboratory and modeled with the governing equations. |
author2 |
Montana State University |
format |
Article in Journal/Newspaper |
author |
Verplanck, Samuel Vincent Adams, Edward Eagan |
spellingShingle |
Verplanck, Samuel Vincent Adams, Edward Eagan Dynamic models for impact-initiated stress waves through snow columns |
author_facet |
Verplanck, Samuel Vincent Adams, Edward Eagan |
author_sort |
Verplanck, Samuel Vincent |
title |
Dynamic models for impact-initiated stress waves through snow columns |
title_short |
Dynamic models for impact-initiated stress waves through snow columns |
title_full |
Dynamic models for impact-initiated stress waves through snow columns |
title_fullStr |
Dynamic models for impact-initiated stress waves through snow columns |
title_full_unstemmed |
Dynamic models for impact-initiated stress waves through snow columns |
title_sort |
dynamic models for impact-initiated stress waves through snow columns |
publisher |
Cambridge University Press (CUP) |
publishDate |
2024 |
url |
http://dx.doi.org/10.1017/jog.2024.26 https://www.cambridge.org/core/services/aop-cambridge-core/content/view/S0022143024000261 |
genre |
Journal of Glaciology |
genre_facet |
Journal of Glaciology |
op_source |
Journal of Glaciology page 1-15 ISSN 0022-1430 1727-5652 |
op_rights |
http://creativecommons.org/licenses/by/4.0/ |
op_doi |
https://doi.org/10.1017/jog.2024.26 |
container_title |
Journal of Glaciology |
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1 |
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35 |
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1810453470931582976 |