| Notice: This seminar has been cancelled. |
| date: |
2011 March 16 (Wed) 10:00-11:00
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| room: |
Kobe University, Science and Technology Research Building #4-809
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| speaker: |
Tatsuhiro Michikami (Fukushima National College of Technology)
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| organizer: |
Ayako Suzuki
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| title: |
A numerical model for the shape distribution of fragments
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| abstract: |
In laboratory impact experiments, the shape of fragments over a broad size range is distributed around the mean value of the axial ratio 2: sqrt(2) : 1, which is independent of a wide range of experimental conditions. The shape distributions of the boulders on asteroid Eros and the small- and fast-rotating asteroids (diameter <200 m and rotation period <1h) are similar to those of laboratory fragments (Michikami et al., 2010). In order to understand those shape distributions, a geometric approach by numerical simulation has been performed. Our model can reproduce the experimental shape distribution.
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