Atomic mechanism of flow in simple liquids under shear

Journal Article · Sun Jan 01 00:00:00 EST 2012 · Physical Review Letters

DOI:https://doi.org/10.1103/PhysRevLett.108.196001· OSTI ID:1041072

Iwashita, T. ^[1]; Egami, Takeshi ^[2]

---

1. University of Tennessee, Knoxville (UTK) & Oak Ridge National Laboratory (ORNL)
2. ORNL

Atomic correlations in a simple liquid in steady-state flow under shear stress are studied by molecular dynamics simulation. The local atomic level strain is determined through the anisotropic pair-density function. The atomic level strain has a limited spatial extension whose range is dependent on the strain rate and extrapolates to zero at the critical strain rate. A failure event is identified with altering the local topology of atomic connectivity by exchanging bonds among neighboring atoms.

• Research Organization: Oak Ridge National Lab. (ORNL), Oak Ridge, TN (United States)
• Sponsoring Organization: USDOE Office of Science (SC)
• DOE Contract Number: DE-AC05-00OR22725
• OSTI ID: 1041072
• Journal Information: Physical Review Letters, Vol. 108, Issue 19; ISSN 0031-9007
• Country of Publication: United States
• Language: English

Related Subjects

71 CLASSICAL AND QUANTUM MECHANICS
GENERAL PHYSICS
ATOMS
SHEAR
SIMULATION
STRAIN RATE
STRAINS
TOPOLOGY