1999 Fiscal Year Final Research Report Summary
Experimental and numerical approach for the behavior of granular medium within shear band
| Project/Area Number |
10460107
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| Research Category |
Grant-in-Aid for Scientific Research (B)
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| Allocation Type | Single-year Grants |
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| Section | 一般 |
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| Research Field |
Irrigation, drainage and rural engineering/Rural planning
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| Research Institution | OKAYAMA UNIVERSITY (1999)
Kyoto University (1998) |
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Principal Investigator |
MURAKAMI Akira Okayama University, Dept. of Environ. Sci. & Tech., Professor, 環境理工学部, 教授 (80157742)
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| Co-Investigator(Kenkyū-buntansha) |
NISHIYAMA Tatsuro Okayama University, Dept. of Environ. Sci. & Tech., Research Associate, 環境理工学部, 助手 (30294440)
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| Project Period (FY) |
1998 – 1999
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| Keywords | Granular material / Trap-door / Shear band / Cellular automata / Localization / Image processing / Shear test |
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| Research Abstract |
During this year, trap-door experiment using aluminum rods is performed and the video record is analysed through the image processing system to obtain the displacement profile and the change of voids of granular media. New local rule of CL-CA (Connected-Lattice Cellular Automata is developed to enable us to analyze the uplift problem of granular assemblage by revising the existing rule for gravitational flow. In the experiment, aluminum rods with the same radius and those with different radii are used to compare the different behavior of circular disks and these behavior is monitored by the high-speed video during 10 seconds.
Numerical analysis based on newly developed local rule is verified through a good agreement within numerical and experimental results. A new notion to capture the distribution of the contact force between particles is also described.
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