Granular packings with sliding, rolling, and twisting friction
Journal Article
·
· Physical Review. E
- Sandia National Lab. (SNL-NM), Albuquerque, NM (United States)
- Central New Mexico Community College, Albuquerque, NM (United States). School of Math, Science and Engineering
Intuition tells us that a rolling or spinning sphere will eventually stop due to the presence of friction and other dissipative interactions. The resistance to rolling and spinning or twisting torque that stops a sphere also changes the microstructure of a granular packing of frictional spheres by increasing the number of constraints on the degrees of freedom of motion. We perform discrete element modeling simulations to construct sphere packings implementing a range of frictional constraints under a pressure-controlled protocol. Mechanically stable packings are achievable at volume fractions and average coordination numbers as low as 0.53 and 2.5, respectively, when the particles experience high resistance to sliding, rolling, and twisting. Only when the particle model includes rolling and twisting friction were experimental volume fractions reproduced.
- Research Organization:
- Sandia National Laboratories (SNL-NM), Albuquerque, NM (United States)
- Sponsoring Organization:
- USDOE National Nuclear Security Administration (NNSA); USDOE Office of Science (SC)
- Grant/Contract Number:
- AC04-94AL85000; NA0003525
- OSTI ID:
- 1667434
- Report Number(s):
- SAND--2020-9899J; 690705
- Journal Information:
- Physical Review. E, Journal Name: Physical Review. E Journal Issue: 3 Vol. 102; ISSN 2470-0045
- Publisher:
- American Physical Society (APS)Copyright Statement
- Country of Publication:
- United States
- Language:
- English
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