Compression experiments of high-density snow I-Plastic-type and destructive-type deformations-
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- UEDA Masatoshi
- Japan Electric Contact Co.,Ltd
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- ARAKAWA Masahiko
- Graduate School of Environmental Studies,Nagoya University
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- MAENO Norikazu
- IceTech Japan,Inc.
Bibliographic Information
- Other Title
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- 高密度雪の圧縮実験 I―塑性型変形と破壊型変形―
- コウミツド ユキ ノ アッシュク ジッケン 1 ソセイガタ ヘンケイ ト ハカイガタ ヘンケイ
- Plastic-type and destructive-type deformations
- 塑性型変形と破壊型変形
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Abstract
Compression measurements were conducted by using a rod to penetrate high-density snow, which is defined as snow with a bulk density larger than the maximum packing density.Two types of deformation were recognized plastic-type and destructive-type deformations.In the plastictype deformation, the relation between the stress and strain rates was nonlinear, hence, this deformation is not Newtonian and is expressed by a power law.This suggests that in addition to the particle rearrangement operative in low-density snow, plastic-type deformation and destruction of ice particles are also important.The critical penetration speeds between the two deformation types were 0.33∼0.83, 0.83∼1.67 and 1.67∼3.33 mm/s for snow densities of 550, 640 and 730kg/m3, respectively.The power increased with density and approached 3, which correspond to that required for penetrating ice.The elastic modulus estimated from the slopes of the saw-tooth records was 100MPa∼1GPa, which increased with speed and density.Further, the destructive strength was 0.2∼8MPa, which also increased with density.
Journal
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- Journal of the Japanese Society of Snow and Ice
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Journal of the Japanese Society of Snow and Ice 68 (2), 123-130, 2006
The Japanese Society of Snow and Ice
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Details 詳細情報について
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- CRID
- 1390001206462216192
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- NII Article ID
- 10017980968
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- NII Book ID
- AN00131221
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- ISSN
- 18836267
- 03731006
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- NDL BIB ID
- 7892646
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- Text Lang
- ja
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- Data Source
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- JaLC
- NDL
- Crossref
- CiNii Articles
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- Abstract License Flag
- Disallowed