Indentations of plastic layers
45 mins 58 secs,
175.54 MB,
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480x270,
29.97 fps,
44100 Hz,
521.4 kbits/sec
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About this item
Description: |
Balmforth, N
Tuesday 19th September 2017 - 09:00 to 09:40 |
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Created: | 2017-09-20 14:15 |
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Collection: | Growth form and self-organisation |
Publisher: | Isaac Newton Institute |
Copyright: | Balmforth, N |
Language: | eng (English) |
Distribution: | World (downloadable) |
Explicit content: | No |
Aspect Ratio: | 16:9 |
Screencast: | No |
Bumper: | UCS Default |
Trailer: | UCS Default |
Abstract: | The indentation of a layer of plastic material by a solid object is a classical problem in plasticity theory. Using the method of sliplines (characteristics) Prandtl provided two key solutions suitable for the indentation of either a relatively shallow or deep layer by a flat plate. In this talk I will summarize how both solutions, and their generalizations, apply in three rather different problems:
1) locomotion through a yield-stress fluid (the viscoplastic version of Taylor's 1951 viscous problem), 2) the formation of footprints, and 3) the washboarding instability of a towed plate above a deformable layer |
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MPEG-4 Video | 640x360 | 1.93 Mbits/sec | 667.15 MB | View | Download | |
WebM | 640x360 | 696.83 kbits/sec | 234.69 MB | View | Download | |
iPod Video * | 480x270 | 521.4 kbits/sec | 175.54 MB | View | Download | |
MP3 | 44100 Hz | 249.75 kbits/sec | 84.18 MB | Listen | Download | |
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