Zobrazeno 1 - 10
of 25
pro vyhledávání: '"Charles K. C. Lieou"'
Autor:
Sudip Kunda, Noah J. Schmelzer, Akhilesh Pedgaonkar, Jack E. Rees, Samuel D. Dunham, Charles K. C. Lieou, Justin C. M. Langbaum, Curt A. Bronkhorst
Publikováno v:
Metals, Vol 14, Iss 9, p 1086 (2024)
This research paper presents an experimental, theoretical, and numerical study of the thermomechanical behavior of single-crystal and polycrystal copper under uniaxial stress compression loading at varying rates of deformation. The thermomechanical t
Externí odkaz:
https://doaj.org/article/0bb8583f7721495a82f6182c7b20c5f2
Autor:
Charles K. C. Lieou, Takeshi Egami
Publikováno v:
Scientific Reports, Vol 13, Iss 1, Pp 1-14 (2023)
Abstract It is known that deformation in disordered materials such as metallic glasses and supercooled liquids occurs via the cooperative rearrangement of atoms or constituent particles at dynamical heterogeneities, commonly regarded as point-like de
Externí odkaz:
https://doaj.org/article/dbba16dc68a941109f64ab08f514ab33
Autor:
Charles K. C. Lieou, Takeshi Egami
Publikováno v:
Physical review. E. 105(4-1)
The coherence length of the medium-range order (MRO) in metallic liquids is known to display a Curie-Weiss temperature dependence; its inverse is linearly related to temperature, and when extrapolated from temperatures above the glass transition, the
Publikováno v:
International Journal of Plasticity. 119:171-187
We describe a theoretical and computational framework for adiabatic shear banding (ASB) and dynamic recrystallization (DRX) in polycrystalline materials. The Langer-Bouchbinder-Lookman (LBL) thermodynamic theory of polycrystalline plasticity, which w
Using a partitioned-energy thermodynamic framework which assigns energy to that of atomic configurational stored energy of cold work and kinetic-vibrational, we derive an important constraint on the Taylor-Quinney coefficient, which quantifies the fr
Externí odkaz:
https://explore.openaire.eu/search/publication?articleId=doi_dedup___::e11b9ad7eb38587ac51c8ccc11422416
Slow Dynamics and Strength Recovery in Unconsolidated Granular Earth Materials: A Mechanistic Theory
Publikováno v:
Journal of Geophysical Research: Solid Earth. 122:7573-7583
Rock materials often display long-time relaxation, commonly termed aging or “slow dynamics”, after the cessation of acoustic perturbations. In this paper, we focus on unconsolidated rock materials and propose to explain such nonlinear relaxation
Publikováno v:
Journal of Geophysical Research: Solid Earth. 122:6998-7008
Unconsolidated granular earth materials exhibit softening behavior due to external perturbations such as seismic waves; namely, the wave speed and elastic modulus decrease upon increasing the strain amplitude above dynamics strains of about 10−6 un
Autor:
Chris Marone, Charles K. C. Lieou, Paul A. Johnson, Eric G. Daub, Robert E. Ecke, Robert A. Guyer
Publikováno v:
Journal of Geophysical Research: Solid Earth. 122:295-307
We model laboratory earthquakes in a biaxial shear apparatus using the Shear-Transformation-Zone (STZ) theory of dense granular flow. The theory is based on the observation that slip events in a granular layer are attributed to grain rearrangement at
Publikováno v:
Physical Review Materials. 3
Both simulations and experiments have suggested that Cu/CuZr nanolaminates are stronger and more ductile than their individual constituents due to interface-mediated interactions between plasticity carriers. In this work, we use the effective-tempera