Identification of elastic properties of interphase and interface in graphene-polymer nanocomposites by atomistic simulations
This article tackles the problem of identification of elastic continuum model by atomistic
simulations for graphene polymer nanocomposite. The Atomistic Local IdentificAtion of …
simulations for graphene polymer nanocomposite. The Atomistic Local IdentificAtion of …
The atomistic representation of first strain-gradient elastic tensors
We derive the atomistic representations of the elastic tensors appearing in the linearized
theory of first strain-gradient elasticity for an arbitrary multi-lattice. In addition to the classical …
theory of first strain-gradient elasticity for an arbitrary multi-lattice. In addition to the classical …
The non-uniqueness of the atomistic stress tensor and its relationship to the generalized Beltrami representation
The non-uniqueness of the atomistic stress tensor is a well-known issue when defining
continuum fields for atomistic systems. In this paper, we study the non-uniqueness of the …
continuum fields for atomistic systems. In this paper, we study the non-uniqueness of the …
[HTML][HTML] Atomic-scale mutual integrals for mixed-mode fracture: Abnormal fracture toughness of grain boundaries in graphene
NT Mai, ST Choi - International Journal of Solids and Structures, 2018 - Elsevier
In this study, we developed a computational scheme based on the atomic-level J-based
mutual integral (or two-state conservation integral) to analyze the mixed-mode fracture along …
mutual integral (or two-state conservation integral) to analyze the mixed-mode fracture along …
Finite-temperature stress calculations in atomic models using moments of position
R Parthasarathy, A Misra… - Journal of Physics …, 2018 - iopscience.iop.org
Continuum modeling of finite temperature mechanical behavior of atomic systems requires
refined description of atomic motions. In this paper, we identify additional kinematical …
refined description of atomic motions. In this paper, we identify additional kinematical …
Atomic-scale mode separation for mixed-mode intergranular fracture in polycrystalline metals
NT Mai, PQ Phi, VP Nguyen, ST Choi - Theoretical and Applied Fracture …, 2018 - Elsevier
In intergranular fractures, cracks tend to propagate along grain boundaries (GBs) even
under mixed-mode loadings. To quantitatively characterize the mixed-mode intergranular …
under mixed-mode loadings. To quantitatively characterize the mixed-mode intergranular …
[HTML][HTML] On the Cauchy-Born approximation at finite temperature for alloys
In this paper, we present the procedure of generalization and implementation of the Cauchy-
Born approximation to the calculation of stress at finite temperature for alloy system in which …
Born approximation to the calculation of stress at finite temperature for alloy system in which …
Atomic mixed-mode cohesive-zone dual constitutive laws of impurity-embrittled grain boundaries in polycrystalline solids via nanoscale field projection method
VP Nguyen, NT Mai, ST Choi - Journal of the Mechanics and Physics of …, 2021 - Elsevier
Atomic-scale mixed-mode intergranular fracture, featured by non-local non-linear discrete
atomic debonding processes near a crack tip along a grain boundary (GB), is modeled with …
atomic debonding processes near a crack tip along a grain boundary (GB), is modeled with …
Noise filtering in atomistic stress calculations for crystalline materials
Spatially-varying stress fields can be obtained from atomistic simulations as weighted
averages over a phase function that depends on the positions and momenta of the atoms …
averages over a phase function that depends on the positions and momenta of the atoms …
[HTML][HTML] Continuum balances from extended Hamiltonian dynamics
The classical procedure devised by Irving and Kirkwood in 1950 and completed slightly later
by Noll produces counterparts of the basic balance laws of standard continuum mechanics …
by Noll produces counterparts of the basic balance laws of standard continuum mechanics …