1. Measuring the mechanical responses of a jammed discontinuous shear-thickening fluid
- Author
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Jiangjiang Hu, Taihua Zhang, Chen Heng, Jiang Weifeng, Yi Ma, Guangjian Peng, and Jia Chao
- Subjects
Dilatant ,Materials science ,Physics and Astronomy (miscellaneous) ,Rheometer ,education ,fungi ,Jamming ,02 engineering and technology ,Mechanics ,021001 nanoscience & nanotechnology ,01 natural sciences ,humanities ,Shear modulus ,Amplitude ,Rheology ,0103 physical sciences ,cardiovascular system ,Shear stress ,Force chain ,010306 general physics ,0210 nano-technology - Abstract
Discontinuous shear thickening observed in many dense suspensions is rather complicated but takes place as a transient. Its details after jamming are still not clear. By using a modified rheometer with an analog-to-digital converter, we show that there are three amplitude regimes of shear strain after jamming. First, the shear modulus and the force chain angle increase with strain; the jammed state gradually deepens. Second, the jammed state is stable against a further increase in shear stress; the force chain angle is constant and the force network is stable. Third, the jammed state cannot resist a further increase in shear stress; with the increase in the force chain angle, the force chain network is broken.
- Published
- 2017
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