Download e-book for iPad: Impact-Activated Solidification of Cornstarch and Water by Scott R. Waitukaitis

By Scott R. Waitukaitis

ISBN-10: 3319091824

ISBN-13: 9783319091822

ISBN-10: 3319091832

ISBN-13: 9783319091839

This thesis ways impression resistance in dense suspensions from a brand new point of view. the main famous instance of dense suspensions, a mix of cornstarch and water, presents sufficient influence resistance to permit someone to run throughout its floor. some time past, this phenomenon have been associated with "shear thickening" less than a gentle shear nation attributed to hydrodynamic interactions or granular dilation. although, neither clarification accounted for the strain scales required for an individual to run at the floor.

Through this study, it used to be came across that the impression resistance is because of neighborhood compression of the particle matrix. This compression forces the suspension around the jamming transition and precipitates a quickly becoming sturdy mass. This becoming sturdy, accordingly, absorbs the effect power. this is often the 1st remark of such jamming entrance, linking nonlinear suspension dynamics in a brand new method to the jamming section transition identified from dry granular materials.

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Extra resources for Impact-Activated Solidification of Cornstarch and Water Suspensions

Sample text

G. Fig. 2). Qualitatively, one can argue that the solidified region must cause this surrounding suspension to flow because the lubrication forces described by Eq. 2 act as a kind of “glue” between the closely packed particles. In order measure the depression dynamics, we shine a laser sheet across the suspension surface in the field of view of the high speed camera, as in Fig. 10. This allows us to make space-time plots of the depth of the surface depression z s versus radial coordinate r and time t.

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Impact-Activated Solidification of Cornstarch and Water Suspensions by Scott R. Waitukaitis

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