Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure
Floating ice impact forces are of concern where structures are built in ice-susceptible waters. Bridge piers, ice control structures or icebreakers are a few examples where the ability to predict the expected ice impact force would be of great help in the design process. Experiments were performed t...
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ftdtic:ADA280752 2023-05-15T16:37:17+02:00 Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure Coutermarsh, Barry A. COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH 1994-03 text/html http://www.dtic.mil/docs/citations/ADA280752 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA280752 en eng http://www.dtic.mil/docs/citations/ADA280752 Approved for public release; distribution is unlimited. DTIC AND NTIS Snow Ice and Permafrost Civil Engineering *ICE *IMPACT PREDICTION *ICEBREAKERS DAMAGE SCALE MODELS INTERACTIONS FINITE ELEMENT ANALYSIS LOADS(FORCES) CALIBRATION BRIDGES PIERS LENGTH ELASTIC PROPERTIES COMPUTATIONAL FLUID DYNAMICS IMPACT STRENGTH LOW VELOCITY Text 1994 ftdtic 2016-02-22T06:07:19Z Floating ice impact forces are of concern where structures are built in ice-susceptible waters. Bridge piers, ice control structures or icebreakers are a few examples where the ability to predict the expected ice impact force would be of great help in the design process. Experiments were performed to determine the response of a floating ice beam to a vertically applied force. The data were used to calibrate a numerical finite element model of the floating ice. The ice was characterized as a linear elastic material in the numerical analysis, and the calibration data were used to assess this assumption as well as to develop a fluid influence coefficient matrix to simulate the dynamic influence of the fluid beneath the ice beam. Finally, a scale model study was performed to determine actual impact forces generated by a floating ice beam against a 45 deg sloped structure. The numerical model developed was then compared to the actual data. The numerical model does well at predicting impact forces for all the beams at low velocity and the force from the thicker ice beams at all velocities. Both the numerical and experimental forces show the same trends and appear to level off and approach a constant value with increasing beam length. The discrepancies between numerical predictions and experimental results are thought to be caused by damage in the experimental ice beams which is not accounted for in the numerical model. Freshwater ice, Ribbon bridge, Impact forces, Sloped structures. Text Ice permafrost Defense Technical Information Center: DTIC Technical Reports database |
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Open Polar |
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Defense Technical Information Center: DTIC Technical Reports database |
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ftdtic |
language |
English |
topic |
Snow Ice and Permafrost Civil Engineering *ICE *IMPACT PREDICTION *ICEBREAKERS DAMAGE SCALE MODELS INTERACTIONS FINITE ELEMENT ANALYSIS LOADS(FORCES) CALIBRATION BRIDGES PIERS LENGTH ELASTIC PROPERTIES COMPUTATIONAL FLUID DYNAMICS IMPACT STRENGTH LOW VELOCITY |
spellingShingle |
Snow Ice and Permafrost Civil Engineering *ICE *IMPACT PREDICTION *ICEBREAKERS DAMAGE SCALE MODELS INTERACTIONS FINITE ELEMENT ANALYSIS LOADS(FORCES) CALIBRATION BRIDGES PIERS LENGTH ELASTIC PROPERTIES COMPUTATIONAL FLUID DYNAMICS IMPACT STRENGTH LOW VELOCITY Coutermarsh, Barry A. Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure |
topic_facet |
Snow Ice and Permafrost Civil Engineering *ICE *IMPACT PREDICTION *ICEBREAKERS DAMAGE SCALE MODELS INTERACTIONS FINITE ELEMENT ANALYSIS LOADS(FORCES) CALIBRATION BRIDGES PIERS LENGTH ELASTIC PROPERTIES COMPUTATIONAL FLUID DYNAMICS IMPACT STRENGTH LOW VELOCITY |
description |
Floating ice impact forces are of concern where structures are built in ice-susceptible waters. Bridge piers, ice control structures or icebreakers are a few examples where the ability to predict the expected ice impact force would be of great help in the design process. Experiments were performed to determine the response of a floating ice beam to a vertically applied force. The data were used to calibrate a numerical finite element model of the floating ice. The ice was characterized as a linear elastic material in the numerical analysis, and the calibration data were used to assess this assumption as well as to develop a fluid influence coefficient matrix to simulate the dynamic influence of the fluid beneath the ice beam. Finally, a scale model study was performed to determine actual impact forces generated by a floating ice beam against a 45 deg sloped structure. The numerical model developed was then compared to the actual data. The numerical model does well at predicting impact forces for all the beams at low velocity and the force from the thicker ice beams at all velocities. Both the numerical and experimental forces show the same trends and appear to level off and approach a constant value with increasing beam length. The discrepancies between numerical predictions and experimental results are thought to be caused by damage in the experimental ice beams which is not accounted for in the numerical model. Freshwater ice, Ribbon bridge, Impact forces, Sloped structures. |
author2 |
COLD REGIONS RESEARCH AND ENGINEERING LAB HANOVER NH |
format |
Text |
author |
Coutermarsh, Barry A. |
author_facet |
Coutermarsh, Barry A. |
author_sort |
Coutermarsh, Barry A. |
title |
Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure |
title_short |
Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure |
title_full |
Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure |
title_fullStr |
Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure |
title_full_unstemmed |
Experimental and Numerical Analysis of Floating Ice Beam Impact Forces against a Sloped Structure |
title_sort |
experimental and numerical analysis of floating ice beam impact forces against a sloped structure |
publishDate |
1994 |
url |
http://www.dtic.mil/docs/citations/ADA280752 http://oai.dtic.mil/oai/oai?&verb=getRecord&metadataPrefix=html&identifier=ADA280752 |
genre |
Ice permafrost |
genre_facet |
Ice permafrost |
op_source |
DTIC AND NTIS |
op_relation |
http://www.dtic.mil/docs/citations/ADA280752 |
op_rights |
Approved for public release; distribution is unlimited. |
_version_ |
1766027577949945856 |